WTP Balad Roz

8/13/2019 WTP Balad Roz

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B L D ROOZ WTP PROJECTPROCESS PL NT OPER TIONS M NU L


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PROCESS PLANT OPERATIONS MANUAL

Table of contents ................................................................................. 1

Process plant & design parameters ................................................... 2

Raw water pumping station ................................................................ 3

Rapid mix basin ................................................................................... 7

Flocculation and clarification ............................................................. 9

Sludge pump station ......................................................................... 14

Filt ration ............................................................................................. 16

Waste pump station ........................................................................... 24

Chlorine system ................................................................................. 26

Alum system ...................................................................................... 28

Polymer system ................................................................................. 31

Clearwell / High service pump station ............................................. 36

Appendix-I .......................................................................................... 42

Appendix-II ......................................................................................... 48

Index of abbreviations ....................................................................... 54


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PROCESS PLANT & DESIGN PARAMETERS

Generally the plant has been designed for the following flows.

PLANT CAPACITY MAXIMUMFLOW IN

MAXIMUMFLOW OUT

One duty raw water pump 500 m3/hr 500 m3/hr

Two duty raw water pump 1000 m3/hr 1000 m3/hr

There will be water losses throughout the treatment line from clarifier

sludge draw off and filter backwash water which will not be treated and not

returned to the head of the works. The above are based on average figures

for service water usage, desludging and for backwash water usage/top up

from the main process.

The basis of design for 1000m3/hr water treatment plant :

PROCESS UNIT BASIS OF DESIGN

Design Maximum capacity of the WTP 1000m3/hr

Flocculation 30 minutes retention time

Filtration rate (all filters) 8.4 m/hr

Filtration rate (n-1 filters) 10.5 m/hr

High Rate backwash rate 55 m/hr

Low Rate backwash rate 16 m/hr

Air scour rate 42 m/hrContact time at max flow 30 minutes

Treated water storage (on site) 9 hours

Elevated treated water storage (off site) 2 hours

Treatment comprises of the following process units:

Raw water extraction pumping station

Flash mixing, flocculation and clarification units

Rapid gravity filters with dual sand and anthracite media

Sludge removal holding tank Waste water holding tank

Coagulant dosing facilities (aluminium sulphate & polymer)

Chlorine drum storage and dosing facilities

In addition, there is space on the site for future installation


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RAW WATER PUMPING STATION

Introduction

The RWPS wet well is fed from two (2) identical river intake screensthat are flat bars mesh enclosed by angle bar frame. The screen may be

cleaned or made it maintenance by lifting it from their normal positions via

davit crane. The crane can rotate and transfer the screens onto a flat roof of

PS if required. One screen feed wet well compartment No.1 and the other

screen feed wet well compartment No.2. The feed from the screens is via

underwater DI pipes and each entry to the wet well can be isolated with a

penstock.

The raw water PS is located above the raw water wet well. All major

equipment is located within the building (ST. 20). Pumps are suspended

bowl type with their impellers in the wet well and motors connected viaextended shaft at ground level.

The PS is set up with four single speed pumpsets operating as 2 duty and 2

standby (Two pumps installed in compartment 1 of the PS and two pump

installed in compartment 2 of the PS ) Pump and motor data is provided in

Appendix I Schedule (I-1)

The raw water wet wells are divided into two segments (interconnected via

penstock) to allow for some flexibility during times of maintenance and

cleaning that may be executed it by two De-silting pumps, one for each

compartment.The plant maximum capacity can be achieved with 2 pumpsets (each pump

have rated capacity 550 m3/hr) so that with one half of the raw water wet

well out for maintenance, 100% of works flow is still possible with the two

remaining pumpsets dedicated to the other half of the wet well and running

at full speed.

The dimension of flanged discharge piping for pump discharge head is

300mm in accordance with BS EN 545, PN 16 and provided with threaded

tap at discharge flange for installation of pressure gauge. Provide pressure

gage, minimum 100 mm face, calibrated to read approximately midrange of

pump discharge pressure and to read below to 5 meters of vacuum.A combination air/vacuum valve (size 100mm ) has been provided in the

discharge pipeline for each pump to release accumulated exhaust air under

pressure from column piping upon pump startup, and allow air to re-enter

column piping when pump shut down. Also to release air from piping

system when pump startup and close watertight when water enters valve and

air exhausted. When pump shut down, valve shall open and allow air to re-


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enter piping system to prevent vacuum. Valves are designed for 16 BAR

working pressure, and shall have minimum air capacity of 600 liters per

minute.

Operation

The PS can be remotely monitored and controlled via PLC RWPS and via

full local manual control. The raw water vertical turbine pumps are provided

with four control station (cs) and four low level float switches, one for each

pump. Front of control station Mounted Devices are :

RAW WATER PUMP ( where x 1, 2, 5, 6) CONTROL PANEL

The operation of pumps is controlled by Pump Hand-Off-Remote selector

switch. In all modes of operation respective wet well Low-Level switches

will cutout operation of Pumps. Pumps shall not restart until Low LevelReset pushbutton is activated. In Hand mode pumps are pump continuously

unless Low-Low Level switch is activated but in Remote mode pumps must

be controlled manually from the plant monitoring PC located in the

administration building where automatic control of the raw water pumps is

not provided. So pumps must be started and stopped manually by operator

action.

Designation Description/range interface

20-HS-00X-C Pump no.x local-off-remot(plc) 3-position

selector switch one for each pump.

20-cs-001

20-HS-00X-D Pump no.x reset push buton one for eachpump

Fail logic

20-YL-00X-A Pump no.x run indicator one for eachpump

Aux contactsMotor starter

20-YA-00X-A Pump no.x fail indicator one for eachpump

-------------

20-ETM-00X Pump no.x Elapse time meter one for

each pump

Run signal

20-LLL-00X Pump no.x low level indicator one for

each pump

20-LSL-00X

20-KC-00X-A Pump no.x power delay timer (0-

60)minutes one for each pump

---------

20-KC-00X-B Pump no.x delay low float timer (0-30)minutes one for each pump

---------

20-YL-00X-B Pump no. control station remote one for

each pump

------------


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The two raw water wet wells compartments can be cleaned periodically or

when required by two De-silting Pumps that have one control panel located

on the roof of PS. Panel nameplate number is De-silting Pump Control Panel

WN04-20CP-008. The Front and rear of Panel Mounted Devices (where x is

8, 9) are :

A- Front of Panel Mounted Devices (where x is 8, 9)

InterfaceDescription/RangeDesignation

--Pump No. x Hand-Off-Automatic 3 position

selector switch (one

20-HS-00x-A

for each pump)

Fail LogicPump No. x Reset pushbutton (one for eachpump)

20-HS-00x-B

Aux contactsPump No. x Run indicator (one for each pump)20-YL-00x

Motor Starter

--Pump No. x Fail indicator (one for each pump)20-YA-00x-B

Run SignalPump No. x Elapse Time meter (one for eachpump)

20-ETM-00x

Pump SafetyPump No. x High Temperature (one for each

pump)20-TAH-00x

Pump SafetyPump No. x Seal Leak (one for each pump)20-YA-00x-A

20-LT-00xDe-silting Well 1, 2 Level20-LI-00x

20-LSL-008

,009

De-silting Well 1, 2 Low Level Alarm20-LALL-008,

009

B- Rear of Panel Mounted Devices (where x is 8, 9)

The operation of De-silting pumps can be controlled by Pump Hand-Off-

Automatic selector switch. In all modes of operation De-silting well Low-

Level float switch shall inhibit operation of Pumps. Pumps shall not restart

DesignationDescription/RangeInterface

20-KC-00x-APump No. x Interval Timer (0 300 minutes)

(one for each pump)

--

20-KC-00x-BPump No. x Duration Timer (0 300 minutes)(one for each pump)

--

20-LY-00xSignal Isolator for De-silting well x Level20-LT-00x


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until respective Reset pushbutton is activated. Also Pump fail require

manual Reset.

In Hand mode the pumps are operate continuously unless Low Level switch

is activated but in Automatic mode the pumps shall operate based on the

settings of the respective Interval and Duration timers.

The following un-powered contacts for signals provided to Distributed I/O

chassis connected to Main PLC Control Panel:

a. De-silting Pump Run (2)

b. De-silting well Low Level Alarm (2)

c. De-silting Pump Fail (2)

Also 4-20 madc signal (De-silting Well x Level (2) ) is provided to

Distributed I/O chassis connected to the Main PLC Control Panel. Where the

Ranges and Activation Levels are:

Range/Level

(m above floor)Description/RangeDesignation

De-silting Well x Level Transmitter20.LE/LT-008,

009

De-silting well x Low Level float20-LSL-008, 009


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RAPID MIX BASIN

Introduction

The purpose of the rapid mixer is to rapidly disperse the chemical to ensuregood mixing with the raw water to attempt to get 100% dispersion of the

chemical.

Before the 600mm raw water pipe inter the rapid mixer building ( ST. 25) ,

is taper to 400mm in order to mounting the raw water flow meter (Venturi

flow meter) which restricted between two manual butterfly valves that can

be used for maintenance. After that the raw water pipe is return to original

size by expansion to 600mm and rise to the building after chlorine feeding

line size 90mm (coming from chlorine building (ST. 61)) is fitted with raw

water pipe size 600mm. The mixer building is consist of manycompartments and the raw water inter the first chamber that distribute water

into two mixing basin through stop log which extend minimum of 0.3 m (12

in.) above maximum water elevation as noted on Schedule 1 of Appendix II-

Schedule (II-1). Each mixing basin is provide with rapid mixer ( their

nameplate No. WN04-25MX-001&002) and two PVC feeding pipe (size

25mm) one for alum(from alum system in ST. 60) and other for polymer (

from polymer system in ST. 60) . The mixing basins are interconnect to the

intermediate chamber via penstocks to allow for some flexibility during

times of maintenance, and distribute the processed water into three

compartments via stop logs for each one, two of these compartments aredeliver the mixing to flocculator / clarifier No.1 & flocculator / clarifier

No.2 through 500mm pipe line for each one and other compartment is used

for future expansion.

Operation:

When the raw water flow through the Venturi flow meter it is start to

indicate flow meter signal and indicate totalized flow meter signal and re-

transmit raw water flow signal to eight(8) locations utilizing I/I transducer-

isolators via raw water flow panel (WN04-25CP-005) that mounted on

ST.25, as presented in the following tables:


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The Rapid Mixer operation can be remotely monitored and controlled via

PLC and the operator station and the HMI located at the PCC. Essentially

though this item is either on or off only without any speed adjustment

capability on the drive itself.

The respective Rapid Mixer can be started and stopped via the pushbuttons

on the LCP (local control panel; panel nameplate No. is WN04-25CP-001).

When in On mode respective Rapid Mixer shall run continuously. In Off

mode Rapid Mixer shall not run. When respective motor overload trips orwhen respective Rapid Mixer High Temperature signal is active, Rapid

Mixer Fail indicators shall be illuminated and maintained also when

respective High Temperature signal is active the Rapid Mixer High

temperature indicator shall be illuminated and maintained. The temperature

switch imbedded in motor stator windings with unpowered contacts to allow

shutdown of motor on high temperature. Over temperature signal shall reset


--Rapid Mixer No. 1 On-Off two

position selector

25-HS-001-A

switch

--Rapid Mixer No. 2 On-Off two

position selector

25-HS-002-A

switch

Fail LogicRapid Mixer No. 1 Reset pushbutton25-HS-001-B

Fail LogicRapid Mixer No. 2 Reset pushbutton25-HS-002-B

Motor Starter AuxiliaryContact

Rapid Mixer No. 1 Run Indicator25-YL-001

Motor Starter Auxiliary

ContactRapid Mixer No. 2 Run Indicator25-YL-002

Motor OverloadRapid Mixer No. 1 Fail indicator25-YA-001

Motor OverloadRapid Mixer No. 2 Fail indicator25-YA-002

25-TSH-001Rapid Mixer No. 1 High Tempindicator

25-TLH-001

25-TSH-002Rapid Mixer No. 2 High Temp

indicator25-TLH-002

Run SignalRapid Mixer No. 1 Elapsed Time

meter25-ETM-001

Run SignalRapid Mixer No. 2 Elapsed Timemeter

25-ETM-002


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automatically when motor temperature returns to normal operating range.

After fail conditions have been eliminated, the Rapid Mixer Reset

pushbuttons shall enable Rapid Mixer to run and reset fail logic. The Power

Fail Restart Delay timer shall start when power is applied to panel. Rapid

Mixers shall not restart on power failure until Power Fail Delay timer has

timed out. The following unpowered contacts for signals are provided to the

Distributed I/O chassis that connected to Main PLC Control Panel:

a. Rapid Mixer Run (2)

b. Rapid Mixer Common Fail (2)

Note:The unit must not be run without a mixing basins full of water as this

will overheat and damage the unit (the propeller blade needs to operate

against some fluid resistance).

FLOCCULLATION AND CLARIFICATION

Introduction

Raw water is dosed with alum inside mixing basin and the purpose of

the rapid mixer is to rapidly disperse the chemical to ensure good mixing

with the raw water to attempt to get 100% dispersion of the chemical. Theflocculating clarifier equipment is designed to flocculate solids previously

subjected to a rapid mix step and settle, collect, and rake the solids to the

clarifier center for removal.

The influent is fed into a circular feedwell by means of center column

influent ports. The solid/liquid mixture flows out radially from the feedwell.

Scum and floating materials are collected by the surface skimmer and

directed into a scum box. Scum is collected in the scum box and discharged

through a scum dropout box. Heavier solids settle to the tank floor where

they are collected by the rake arms, which move the settled solids to thecenter cone where they are pumped out. The clarified overflow is removed at

the tank periphery

The water treatment plant is designed for two (2) circular clarifiers, 26

meters in diameter and each flocculation/clarifier system consist of the

following :


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Anchor Bolts:Used to attach components of clarifier to tank concrete

structure via lower flange of center pier.

Center Column (Center Pier ) : Provides structural support for the

mechanism as well as serves as the influent pipe for flow entering the tank.

Influent Pipe Diameter 500 mm and support drive mechanism on mounting

plate at top of pier. At upper end its Provided with series of ports to direct

flow out of center pier.

Center Cage:Provides support for and transfers motive force to the rake

arms and it is suspended from drive mechanism with connections for

collector arms at bottom.

Drive Unit:Provides motive for the clarifier mechanism

Rake Arm (Collector Arms):Scrapes the tank floor and directs sludge to

the center of the tank for removal. Each clarifier have two (2) collector arms

of structural steel members using box or triangular truss construction and

they are connect to center drive cage conforming to slope of tank floor.Theirtip speed at basin periphery are in range of two (2) meters per minute,

minimum and 3.5 meters per minute, maximum ,as well as that each rake

arm is provided with steel blades with adjustable brass squeegees to scrape

settled sludge along tank bottom to sludge pocket at center of tank, so entire

tank bottom scraped twice for each revolution of mechanisms.

Feedwell (Flocculation Well ) :It is designed to provide efficient hydraulic

control and distribution of influent flow and enhance flocculation also it is

Provide with ports at water surface to relieve floating material. Baffle ports

to prevent short circuiting.

Flocculators : The mechanism gently mixes the treated water in such a way

to increase the opportunity for particle contact and promote the formation of

floc. Each clarifier is provide with four rotating flocculations arms having

vertical paddles that mesh with counter rotating vertical paddles on the

sludge collector and stub arms.Maximum flocculation arm tip speed to be

1.0 meter per second. Tip speed shall not be destructive to the floc that is

formed. The flocculation arm drive mechanism is consist of a motor,

variable speed mechanism, and speed reducer. The flocculation paddles

speed must be adjustable over a 4:1 range using a mechanical variable speed

traction disc drive with torque transmission. The traction drive is designedfor continuous operation at its rated capacity.

The flocculation arms are designed to achieving the specified velocity

gradient value while meeting the maximum specified tip speed criteria. This

velocity gradient and tip speed will provide optimum flocculation without

destructive shear to floc particles. The flocculation arms shall be arranged


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concentrically about the center line of the flocculating clarifier mechanism

for uniform mixing within the flocculation well.

Weirs and Baffles:Effluent exits the tank flowing over the weirs. Weirs

provide a controlled, uniform effluent withdrawal from the tank. Baffles

prevent floating scum from flowing over the weirs.

Skimmer: Removes floating scum material from the surface of the water,

and deposits it into the scum box.

Walkway and Platform:Provides access to the drive unit.

Scum Box: Transports floating material and scum out of the tank through

the scum pipe.

Torque overload alarm :Is used to alarm and cutout switch to open motor

circuit, and these can be field-adjustable

Control equipment: Each Flocculating Clarifier is provide with one (1)

control panel have tag No. WN04-30CP-001&002 respectively.

Size to dimensions and slopes of clarifier basins as shown on Drawings and

each clarifier is designed for the following hydraulic conditions :

Note : Maximum head loss measured from entrance to center pier (center

column) to clarifier water surface.

Operation:

This clarifier utilizes a center feed pipe that serve as influent pipe

(500mm diameter) and support drive mechanism, sludge collection

equipment, and access bridge. The feed is diffused through' ports located at

upper end to direct flow out of center pier into a circular feedwell at

maximum 0.45 meters per second velocity and from which it flows out

radially towards the peripheral overflow weir.

The effluent is removed at the tank periphery. Sufficient detention

time is allowed to permit the solids in the feed to settle during the time of

flow from the influent to the point of effluent collection. The effluent

collection scheme should be adjusted to continuously remove a uniform

MinimumAverageMaximum

500750Influent (m3/hr)

500750Effluent (m3/hr)

4558Sludge Withdrawal (m3/hr)

80Maximum Head Loss (mm)


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amount of effluent per unit length of periphery and to eliminate irregular

flow at any one place. Any irregularity will cause a convergence of flow at

certain points, and the velocity at these points may be high enough to carry

fine solids with the effluent.

The raking mechanism at the tank bottom collects the solids as they

settle. The rake blades push solids to the sludge trough for removal. The

speed of the raking mechanism has been set and should not be changed

without consulting WesTech Engineering, Inc

proper start-up and operation depends on one major rule: Withdraw

solids at the same rate that they are fed into the tank. Clarifiers are not

designed as storage units. Otherwise, accumulated solids will overflow the

mechanism, resulting in equipment shutdown.

The common procedure to start-up the clarifier is fill the clarifier with

clarified effluent. Then start the mechanism and associated equipment, and

begin introducing normal influent. As the solids start to settle, the underflowconcentration will begin to increase. At this time the sludge blanket should

start to develop, then rise. For reasonable clarifier performance, the blanket

should be at least as deep as the rake arms at the tank center. A sludge-judge

or something similar can help to locate the blanket level. Many plants will

operate with the sludge blanket at an average of 0.9 to 1.2 meter in depth.

This, of course, will fluctuate throughout the day as the flows increase and

decrease. If the blanket does not develop within a few hours, the underflow

withdrawal rate is probably too high. Slow down the sludge withdrawal until

the blanket starts to appear, this can be achieved by varying the opening the

eccentric plug valve in de-sludge valve chamber that is mounted with sludge

pump station (ST.35). If the sludge blanket appears, but the depth continues

to increase, then the sludge withdrawal rate must also be increased until a

steady state is achieved. At this steady state, the underflow solids mass

should be equivalent to the incoming solids mass. If the sludge blanket

continues to rise even at maximum sludge withdrawal rates, then the influent

feed rate must be decreased. Generally, clarifiers are conservatively

designed, making this case unlikely.

The operation of can be controlled via Flocculating Clarifier On-Off

hand switch that mounted on front of clarifier control panel. When in onmode Flocculating Clarifier shall run continuously. In off mode Flocculating

Clarifier shall not run. When any motor overloads trip or when Flocculating

Clarifier Torque Shutdown signal is active, Flocculating Clarifier Common

Fail indicator has been illuminated and maintained ,as well as Center Drive

and Flocculator Motor Fail indicators shall be illuminated and maintained

when respective motor overload trip. To enable Flocculating Clarifier to run


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after fail conditions have been eliminated, the Flocculating Clarifier Reset

pushbuttons can be used for this purpose. Flocculating Clarifier Torque

Alarm indicator is illuminated and maintained when Torque Alarm switch

signal is active. This case occur when correspond alarm switch reach to

torque setting of 75 percent of continuous operating output torque and in

case of correspond motor cutout switch to torque setting of 100 percent of

continuous operating output torque it will open motor circuit. Reset of

Flocculating Clarifier Torque alarm indicator can be satisfied by

Flocculating Clarifier Reset pushbutton when high torque condition has been

eliminated.

The control panel of Flocculating Clarifier is provide the following

unpowered contacts for signals to the Main PLC Control Panel:

a. Flocculating Clarifier Run

b. Flocculating Clarifier Common Fail

c. Flocculating Clarifier Torque Alarmd. Flocculating Clarifier Torque Shutdown

e. Flocculating Clarifier Automatic Operation

The description of the front panel can be listed below :


--Flocculating Clarifier On-OffHS-

Two position selector switch

Fail LogicFlocculating Clarifier Reset pushbuttonHS-

Motor Starter Auxiliary

ContactFlocculating Clarifier Run indicatorYL-

Motor Overloads andTorque

Flocculating Clarifier Common Failindicator

YA-

Motor OverloadClarifier Center Drive Fail indicatorYA-

Motor OverloadFlocculator Motor No. 1 Fail indicatorYA-




NSH-Flocculating Clarifier Torque Alarm

indicatorNLH-

NSHH-Flocculating Clarifier Torque ShutdownindicatorNLHH-


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Sludge Pump Station

The sludge pump station is fitted with a valve pit to house a manual of

many eccentric plug valves (size 150mm qty. 4 & size 100mm qty 2). As

sludge is collected at the bottom of the clarifier it is removed via underflowsludge pipe 150mm in diameter for each clarifier and pumped out by

opening eccentric plug valves on sludge holding tank (sludge blowdown

pit). Other miscellaneous flows include floating materials and scum from

scum box of clarifier through scum pipe 150mm in diameter to open on

sludge blowdown pit. The recommended operating levels are from low water

level (LWL) at 2m above floor of pit, to high water level(HWL) at 5m

above pit floor and the volume of sludge pit is 120m3 to operating depth.

As the sludge is a higher density than the water if the valve is opened

too quickly there is a danger of the inertia in the sludge resulting in creating

a hole for the water to pass. An eccentric plug valve has been chosen for thisduty due to its slow opening characteristic. Operators should note the time

that the valve stays open for on site as with experience this may need to be

amended/shortened.

There are three (3) sludge pumpset inside sludge blowdown pit ( Tag No. are

WN04-35PU-001,002,003), configured as Lead/Lag/standby transfer the

flows into the lagoons controlled by start and stop levels within the sludge

pit.The technical data of sludge pump is listed in Appendix ISchedule(I-5)

The sludge pump station is provided with guide rail and lifting chain

for pump removal through maintenance time. Local control of the sludgepump station is possible from the Local Control Panel WN04-35CP-001

located on the roof of sludge building (ST.35) that is provided with five (5)

level switches for control of pumps and have ranges and activations level as

follow :Range/Level

(m above floor)Description/RangeDesignation

Sludge well High-High Level float35-LSHH-001

Sludge well Start Lag Pump35-LSH-001-B

Sludge well Start Lead Pump35-LSH-001-A

Sludge well All Pumps Stop35-LSL-001Sludge well Low-Low Level float35-LSLL-001

The operation of pump can be controlled via Pump Hand-Off-

Automatic selector switch that mounted on sludge pump control panel and in

all modes of operation Sludge well Low, Low-Level switch inhibit operation

of Pumps. Pumps can not restart until respective Reset pushbutton is


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activated. In Hand mode pumps must pump continuously unless Low-Low

Level switch is activated. In Automatic mode, if two pumps are selected as

Lead, they must alternate, with the second pump operating in the Lag mode.

If three pumps are selected to Lead the third pump shall be forced to the

standby position.

Lead pump shall start when Start Lead pump float activated and Lag

pump shall start after time delay when Lag float activated. So operating

pump(s) shall stop when stop pump float or low, low level float activated.

When pump stop due to loss of power pump(s),it is not restart until restart

delay timer has timed out.

The sludge pump control panel is provided with the following un-

powered contacts for signals to Distributed I/O chassis connected to Main

PLC Control Panel:

a. Sludge Pump Run (3)

b. Sludge well High, High Level Alarmd. Sludge well Low, Low Level Alarm

e. Sludge Pump Fail (3)

The above description for operation of sludge pump control pump can be

listed with following table ( where x is 1, 2, 3) :InterfaceDescription/RangeDesignation

--Pump No. x Hand-Off-Automatic 3 position selector

switch (one for each pump)

35-HS-00x-A

--Pump No. x Lead-Lag-Standby 3 position selectorswitch (one for each pump)

35-HS-00x-B

Fail LogicPump No. x Reset pushbutton (one for each pump)35-HS-00x-CAux contacts

Motor Starter

Pump No. x Run indicator (one for each pump)35-YL-00x



Run SignalPump No. x Elapse Time meter (one for each pump)35-ETM-00x

Pump SafetyPump No. x High Temperature (one for each pump)35-TAH-00x


35-LSHH-001Sludge Well High, High Level Alarm35-LAHH-001

35-LSLL-001Sludge Well Low, Low Level Alarm35-LALL-001

--Pump No. x Delay Power Failure Timer (0 30

minutes) (one for each pump)

35-KC-00x-A

--Pump No. x Lag Pump Start Delay Timer (0 5minutes) (one for each pump)

35-KC-00x-B


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FILTRATION

Introduction

Filtration process consists of conventional gravity filters using dual

media bed of sand and anthracite. Filter operation is declining rate. Filtermedia washing is with concurrent air and water wash followed by water

wash alone

Filtration equipment consists of the following :

1. Filter underdrains, suitable for support of the filter media without theneed for gravel support.

2. Filter media retention nozzles, as necessary to ensure that media is notlost through the underdrain system without a gravel support.

3. Filter Media with depth one (1) meter ( 30cm sand & 70cm

anthracite).4. Media-retaining backwash troughs, manufactured from stainless steel

with 3 troughs for each filter and have a combined capacity of 1400

m3/h while maintaining a liquid level in troughs no higher than 50mm

below trough weir.

5. Air distribution headers within filter box.6. Air scour blowers. Provided with two (2) air blowers, each blower

rated to deliver 1,350 m3/h at discharge pressure of 0.48 bar (G) at

speed not to exceed 1,500 rpm and shaft input power requirement not

to exceed 82 kW

7. Automated filter valves, including electric actuators. All valves infilters are actuated butterfly valves and distributed as described in

valve schedule below.

Service

Location

Qty.

No.

Valve

size

mm

OperatorEnd

ConnectionFunction

Tag

Number

Filter

influent4500ElectricFlangedOPEN/CLOSE

40-FV-

0x1

Filtereffluent

4300ElectricFlangedOPEN/CLOSE40-FV-0x2

Backwash

Supply4400ElectricFlangedOPEN/CLOSE

40-FV-

0x4

Air Scour4150ElectricFlangedOPEN/CLOSE40-FV-0x6

Backwash4600ElectricFlangedOPEN/CLOSE40-FV-


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Design Data

The plant is provided with 4 filters to supply nominal capacity of 1000 m3/h.

- Hydraulic conditions for plant are:

a. Minimum flow, m3/h 500

b. Maximum flow, m3/h 1,000

- Hydraulic conditions for each individual filter are:

a. Minimum flow, 88 m3/h, i.e., minimum plant flow, with all filters on-line, maximum

b. accumulated headloss.c. Average flow, 250 m3/h, i.e., average plant flow, with all filters on-

line, average accumulated headloss

d. Maximum flow, 500 m3/h, i.e., maximum plant flow, with one filter

off-line for backwashing, minimum accumulated headloss.

- Filter box dimensions for each individual filter are:

a. Length, 5mb. Width, 5mc. Area, each filter, 25 m2d. Filter area (total per plant), 100 m2

- Design surface loading rates (while in service):

a. Maximum accumulated headloss, with all filters in operation, 7.0 m/h

b. Average accumulated headloss, wWith all filters in operation, 10.0m/h

c. Minimum accumulated headloss, with one filter off-line, 20.0 m/h

- Design surface loading rate high-rate filter backwash:

a. Maximum, 55 m/hb. Typical, 49 m/hc. Minimum, 36 m/h

- Design surface loading rates, low-rate filter backwash (concurrent w/airscour):

a. Maximum, 16 m/hb. Typical, 15 m/hc. Minimum, 13 m/h


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- Design air scour surface loading rates (concurrent with low-rate

backwash):

a. Maximum, 0.7 m3/min/m2b. Typical, 0.6 m

3/min/m

2

c. Minimum, 0.5 m3/min/m2

Filter Media

A. Anthracite: Top layer.

a. Effective Size: 1.0 to 1.2mm with uniformity coefficient of 1.45 orless.

b. Specific Gravity: >1.4c. Final media depth: 700 mm

B. Sand: Bottom layer.

a. Effective Size: 0.45 to 0.55 mm with uniformity coefficient of 1.5 or

less.b. Specific Gravity: >1.4c. Final media depth: 300 mm

Operation

General :

Under normal operation, filters operate continuously. Control of the

filters is performed using local filter control panels, (1 per filter), and 1 main

control panel. Individual panels are installed on operating floor, next to each

filter, such that operation of filters can be seen by operator from panel.Control at panels reporting to Main Filter PLC. Main Control Panel is

installed in Administration Building Electrical Room.

Filter Control Panels are interlocked through Main Control Panel so as

to allow only 1 filter to enter backwash mode at any time. Plant operators

may use any of the following triggers for backwashing:

a- Influent channel level (automatically initiated wash)b- Any other reason at operators discretion.

Main Control Panel is to provide proper sequencing to prevent

multiple filters washing simultaneously and display the total filter flow and

announce alarms. Also it is provided to allow for sequential air scour/lowrate water washing followed by high rate water washing. In the event of

failure of air scour system, the backwash sequence shall automatically revert

to water-only wash without need for operator intervention. Duration of

elements within wash must be operator adjustable.


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Filter Control Panels are equipped to allow for automatic/manual

initiation of automated backwash sequence or fully manual control of

backwash through Filter Manual/Auto switch. Automatic backwash can only

be done when at least one Low & High Rate Backwash Pump and Air Scour

Blower Local-Off-Master switches are in Master mode and Filter Control

Panel Manual/Auto switch is in Automatic mode.

Filter Influent High Level alarm indicator lights and Audible signal on

panel are generated when alarm state is active and Audible alarm can be

mute from Alarm Silence push button. Alarm Acknowledge push button

shall reset Alarm Light and Audible alarm. Main Filter control panel is

monitor last filter backwashed in automatic controlled backwash. Operator

initiated automatic backwash, from Filter x control panel, will not change

last filter backwashed. Alternate Low and High Rate Backwash Pumps and

Air Scour blowers when respective Local-Off-Master switches are both in

Master mode. If pump or blower fail and both respective Local-Off-Masterswitches are in Master mode start other pump or blower. Fail condition of

either Backwash Pumps or Air Scour Blowers shall generate an alarm.

Alarm Horns at Main Filter Panel PLOC-4 and Filter x Control panel shall

sound when an alarm condition exists. Silence pushbutton shall deactivate

Alarm Horn. Alarm reset can be from Main Filter Control Panel or Filter x

Control Panels.

Backwash :

Automatic Backwash control :

The automatic backwash is initiated by either influent channel level or

total plant production and Main Control Panel will initiate backwash on next

filter in sequence (1, 2, 3, 4). Backwash will not take place when Filter

Effluent Tank Level is below adjustable Filter Effluent Backwash Inhibit set

point, or when Filter Effluent Tank Low Level Float signal is active. Filters

are sequentially automatically backwashed when Filter In/Out of Service

switch is in In-Service mode and Filter Manual/Auto selector switch is in

Automatic mode. Next Filter in sequence will be automatically backwashed

when Filter Influent Backwash Level set point is reached based on selectedFilter Influent Channel level signal. Backwash sequences are listed below.

Manual Backwash control :

Operator is to be able to initiate backwash sequence from Filter x

control panel when Filter is in Manual mode, Filter is In Service, and when

Filter x Control Panel Backwash Sequence Start push button is pressed.


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When PLC is backwashing another filter, that backwash cycle shall be

completed, then start operator initiated backwash for filter selected. Do not

count this backwash as last filter backwashed in Automatic backwash

sequence. Backwash sequences are listed below.

Operator will be able to backwash a filter manually from Filter x

control Panel when filter is in manual mode, filter is out of service, one High

and one Low Rate Backwash Pump Local/Off/Master switches are in Local

mode, and one Air Scour Blower Local/Off/Master switch is in Local mode.

Backwash sequences are listed below with manual valve, pump and blower

operation.

Backwash Sequence:

a. Close Filter Effluent and the Filter Influent Valves.b. Open the Filter to Waste Valve and allow water level to drain to

Filter Backwash Level via Filter to Waste Valve. Should filterlevel not reach this level within pre-set but adjustable period of

time open Filter Backwash Waste Valve.

c. When filter reaches Backwash Level close Filter To WasteValve.

d. If Filter Backwash Waste Valve is not Open then open FilterBackwash Waste Valve.

e. Turn on Low-Rate Backwash Pump, and open Filter BackwashSupply Valve.

f. Start Air Scour Blower and open the Air Scour Valve.Simultaneously air scour/water wash for pre-set, but adjustable

period of time using Filter Air Scour Timer. If air scour blowers

are unavailable close Air Scour Valve and continue the

sequence as water only wash using Filter Low Rate Backwash

Timer

g. Close Air Scour Inlet Valve, and turn off Air Scour Blower.h. Close Backwash Supply Valve, and turn off Low-Rate

Backwash Pump.

i. Allow filter to rest for pre-set, but adjustable period of time

using the Filter Rest Low Rate Backwash Timer.j. Turn on High-Rate Backwash Pump, and open Backwash

Supply Valve. Backwash filter at high-rate for adjustable pre-

set period of time.

k. When High Rate Backwash Timer times out close FilterBackwash Supply Valve and turn off High Rate Backwash

Pump.


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l. Close Backwash Waste Valve and start Filter Rest High RateBackwash Timer.

m.When Filter Rest High Rate Backwash Timer times out openBackwash Supply Valve, turn on Low Rate Backwash Pump to

allow water to rise in filter to Filter Operational Level then

close the Backwash Supply Valve, and turn off Low-Rate

Backwash Pump.

n. Initiate Filter Rest After Refill Timer. When timer times out,open the Filter Influent Valve. This will re-introduce clarified

water into filter.

o. Open Filter-to-Waste valve for adjustable pre-set time period.Close Filter-to-Waste Valve when timer times out. Reset Filter

Time Since Last Backwash timer. Reset Filter Effluent Flow

Total Since Last Backwash totalizer.

p. Open Filter Effluent Valve and return filter to normal operation.q. Initiate adjustable (0 to 60 min) backwash monitor timer at start

of automatic backwash sequence. If sequence not complete

before timer times out, generate filter alarm..

The following values are transmit to Main PLC in Administration

Building :

1. Air Scour Blower Run.2. Low-Rate Backwash Pump Run.3. High-Rate Backwash Pump Run.4. Air Scour Blower Fail.5. Low-Rate Backwash Pump Fail.6. High-Rate Backwash Pump Fail.7.North Influent Channel Level8. South Influent Channel Level9. Filter Turbidity.

10.Common Filter Alarm.11.Filer Effluent Level.

and Hardwire Signals to/from Filter x Control Panel to Main Filer

Panel PLC-4 shall be minimum of following signals:

(( High Rate Pump, Low Rate Pump, and Air Scour Blower request (6) from

Filter x Control Panel )).


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The ranges and activation levels of sensors are :

Range/LevelDescriptionDesignation

0 5 mFilter Influent Channel Level sensor/transmitter40-LE/LIT-

(one for each channel)

Filter 1 4 Differential Pressure40-PDI-sensor/indicator (one for each filter)

0 10 mFilter Effluent Tank Level sensor/transmitter42-LE/LIT-

1.8 m above

tank floorFilter Effluent Tank Low Level float42-LSH-

0 10 NTUFilter 1 4 Turbidity sensor/transmitter40-AE/AIT-

(one for each filter)

0 800 m3/hLow Rate Backwash Supply Flow42-FE/FIT- (sensor/transmitter provided by others)

0 1600 m3/hHigh Rate Backwash Supply Flow42-FE/FIT-

(sensor/transmitter provided by others)

80 800 m3/hFilter x Effluent Flow (sensor/transmitter40- FE/FIT-

provided by others)

Elev. 46.75Filter x Operation Level40-LSH-

Elev. 43.50Filter Backwash Level40-LSL-

Bottom of filter box = Elev. 41.40

Bottom of filter effluent tank = Elev. 36.50

Operators may assume a linear relationship between the watertemperature and the backwash rate to be applied based on the following as

well as actual on site observations with the effectiveness of the cleaning

cycle and measurements of the bed expansion. These rates may be adjusted

from site experience.

Maximum Backwash Rate [m/h]Water Temperature [C]

3724


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Waste Pump Station

Waste water (sludge) flows from many ways to the waste water pit of

waste pump station (ST. 70) , these can be listed below :

- waste water incoming from lagoon through pipe 300mm in diameter- dirty water incoming from sptic mound through pipe 150mm indiameter

- dirty water of backwash for filter and waste of filter rinse throughpipe 600mm in diameter

- waste water of storm sewer through pipe 600mm in diameter .where the volume of wastewater pit is 210m3 to operating depth. There are

three (3) wastewater pumpset inside wastewater pit ( Tag No. are WN04-

70PU-001,002,003), configured as Lead/Lag/standby transfer the flows into

the irrigation canal controlled by start and stop levels within the wastewater

pit. The technical data of sludge pump is listed in AppendixISchedule(I-5)The wastewater pump station is provided with guide rail and lifting

chain for pump removal through maintenance time. Local control of the

wastewater pump station is possible from the Local Control Panel WN04-

70CP-001 located on the roof of wastewater building (ST.70) that is

provided with five (5) level switches for control of pumps and have ranges

and activations level as follow :

Range/Level

(m above floor)

Description/RangeDesignation

Waste well High-High Level float70-LSHH-001

Waste well Start Lag Pump70-LSH-001-B

Waste well Start Lead Pump70-LSH-001-A

Waste well All Pumps Stop70-LSL-001

Waste well Low-Low Level float70-LSLL-001

The operation of waste pumps is similar to the operation of sludge

pumps and can be controlled via Pump Hand-Off-Automatic selector switch

that mounted on sludge pump control panel and in all modes of operation

Sludge well Low, Low-Level switch inhibit operation of Pumps. Pumps cannot restart until respective Reset pushbutton is activated. In Hand mode

pumps must pump continuously unless Low-Low Level switch is activated.

In Automatic mode, if two pumps are selected as Lead, they must alternate,

with the second pump operating in the Lag mode. If three pumps are

selected to Lead the third pump shall be forced to the standby position.


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Lead pump shall start when Start Lead pump float activated and Lag

pump shall start after time delay when Lag float activated. So operating

pump(s) shall stop when stop pump float or low, low level float activated.

When pump stop due to loss of power pump(s),it is not restart until restart

delay timer has timed out.

The waste pump control panel is provided with the following un-

powered contacts for signals to Distributed I/O chassis connected to Main

PLC Control Panel:

a. Waste Pump Run (3)

b. Waste well High, High Level Alarm

f. Waste well Low, Low Level Alarm

g. Waste Pump Fail (3)

The above description for operation of waste pump control pump can be

listed with following table ( where x is 1, 2, 3) :


--Pump No. x Hand-Off-Automatic 3 position selector


70-HS-00x-A

--Pump No. x Lead-Lag-Standby 3 position selector


70-HS-00x-B

Fail LogicPump No. x Reset pushbutton (one for each pump)70-HS-00x-C

Aux contacts

Motor Starter

Pump No. x Run indicator (one for each pump)70-YL-00x



Run SignalPump No. x Elapse Time meter (one for each pump)70-ETM-00x

Pump SafetyPump No. x High Temperature (one for each pump)70-TAH-00x


70-LSHH-001Sludge Well High, High Level Alarm70-LAHH-001

70-LSLL-001Sludge Well Low, Low Level Alarm70-LALL-001

--Pump No. x Delay Power Failure Timer (0 30

minutes) (one for each pump)

70-KC-00x-A

--Pump No. x Lag Pump Start Delay Timer (0 5minutes) (one for each pump)

70-KC-00x-B


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CHLORINE SYSTEM

Introduction

All chlorine systems operate on the vacuum gas draw off from liquid

1 ton capacity drums, via vacuum regulators. Chlorine drum storagefacilities are provided within a drive in facility sealed from the rest of the

chlorine building to operate as a containment facility. Full gas alarm systems

are in place as well as a HVAC system in the event of a major leak.

Each 1-metric tone chlorine cylinders is mount per chlorine cylinder scale

that provided with readout type dial indicating total weight of cylinders on

scale and capable of continuously weighing 1 metric ton chlorine cylinders

with maximum capacity of 1-tonne cylinders which are lifting by two (2)

lifting bars, one (1) per site. Floor mount (6) 1-metric tone cylinders in

storage trunnions so chlorine cylinders lie perpendicular to face of scale

dial.

Each cylinder provided with vacuum regulator with integral flow meter and

each set of four (4) 1-metric tone chlorine cylinders is provided with

automatic switchover modules (WN04-61ASO-001) to distribute chlorine

gas from vacuum regulators to remote chlorine ejector and designed for

maximum chlorine usage rate of 574 kg/day.

Operation

The chlorine is supplied to three dosing point, one at raw water

(upstream of the rapid mix tank) and second to the water before entering thefilters (Filter influent) and the third on the filtered water at Filter Effluent

tank. The amount of the chlorine dosing is controlled by vacuum operated,

solution feed variable orifice type chlorinators manually or automatically,

where their capacity as follow :

1- Rapid Mix Tank Chlorinator (WN04-61CP-001) with capacity of72.2 kg/24 hrs.

2- filter Chlorinator (WN04-61CP-002) with capacity of 72.2 kg/24hrs.

3- Filter Effluent Chlorinator (WN04-61CP-003) with capacity of144.4 kg/24 hrs.

one ejector is provided for each chlorinator and W1 water rotometer

on each ejector suction line as follow :

1- 1. Rapid mix tank ejector suction: Rotometer (61-FI-011) designedfor 80 liters/minute.


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2- 2. Filter influent: Rotometers (61-FI-012) designed for 60liters/minute.

3- 3. Filter effluent: Rotometers (61-FI-013) designed for 120liters/minute.

As well as one (1) water pressure gauge on each ejector plant effluent

line with range of 0 to 700 kPa and one (1) pressure control valve on each

ejector plant effluent line suitable for system pressures of 0 to 700 kPa. Size

ejectors for conditions listed below.

Minimum

Water

Pressure

Available

(kPa)

Maximum

Chlorine

Demand

(kg/hr)

Maximum

Plant Flow to

Ejector

(liters/min)

Minimum

Backpressure

at Discharge

of Ejector

(kPa)

Ejector

300380186Raw Water

Force Main

30036056Filter Influent

300612048Filter Effluent

Each chlorinator is supplied with one control panel in chlorinator room.

Front and rear of panel devices are listed below :

Front of panel devices:


HS-Chlorinator On/Off two position Selector Switch

HS-Chlorinator Manual/Automatic two position selector

switch

SCU-Chlorinator Dosage Control

PI-Ejector Vacuum Pressure indicator

FI-Chlorine Flow indicator (rotameter)

HC-Manual Chlorine Rate valve

PAH-High Vacuum Alarm indicatorPS-

PAL-Low Ejector Vacuum Alarm indicatorPS-

FI-Raw Water Flow digital displayWN04-25CP-005Flow Panel


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Rear of panel devices:


PS-High Vacuum/Loss of Chlorine Gas

pressure switch--

PS-Low Vacuum/Loss of Ejector Waterpressure switch

--

Chlorinator On/Off selector switch is turn control power on and

Manual/Auto selector switch is control how chlorine rate is controlled. In

Automatic mode chlorinator is operate from Raw Water 4 20 mAdc flow

signal from WN04-25CP-005 Flow Panel. In Manual mode chlorinator will

provide dosage control based on adjustments to the Manual Rate Valve

independent of other controls. High Vacuum Alarm indicator shall be

illuminated when High Vacuum Cylinder Loss of Gas pressure switch isactive. As well as Low Ejector Vacuum Alarm indicator is illuminated

when Low Vacuum/Loss of Ejector Water pressure switch is active. The

Distributed I/O chassis connected to Main PLC Control Panel is provided

with the following unpowered contracts for signals to the:

a. Low vacuum alarm.

b. High vacuum alarm

chlorine storage room is Provided with chlorine gas detector (61-AE-

004) with two detector heads and chlorine gas detector (61-AE-005) with

one detector head in chlorinator room. When chlorine concentration in airreaches level of 1 PPM, low chlorine alarm will be activated. When chlorine

concentration in air reaches level of 2 PPM, high chlorine alarm shall be

activated. There are two contact outputs for each alarm to interface to

distributed I/O and HVAC systems.

.

ALUM SYSTEM

Introduction

The alum chemical building part consists of the alum powder raw

material storage area, alum mixing chambers, dosing plant, lifting monorails.

Bagged alum is loaded into a crane mounted hopper and released via an inlet

basket into one of the concrete mixing tanks. The service water system is

used to provide the dilution water to make up alum solution to


30/55

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approximately 10% concentration. Each mixing chamber is equipped with a

constant speed mixer. Design alum dosing rate 50mg/l as Al2(SO4)3

.14H2O so alum consumption = 1256kg/d

Alum Dosing System

The automatic flow paced dosing of alum is via a duty/ standby

positive displacement peristaltic pumps type complete with spring-loaded

pumphead, self-contained variable speed drive, and flexible extruded tube as

specified. Peristaltic pumping action is created by the compression of the

flexible tube between the pumphead rollers and track, induced forward fluid

displacement within the tube by the rotation of the pump rotor, and

subsequent vacuum-creating restitution of the tube so the dosing flow shall

be in the direction of the rotor rotation, which can be reversed and shall beproportional to rotor speed. Pumps have a maximum suction lift capability

of up to 9 meters vertical water column. Max pressure rating: 207 kPa for

single pump head and 103 kPa for double pump head.

On each pump discharge line it is Provided with one (1) water

pressure gauge (60-PI-001, 002, 003, 004) and high pressure switch (60-

PSH-001, 002, 003, 004) with range of 0 to 200 kPa as well as Provide one

(1) high level switch (60-LSH-001, 002, 003, 004) integral to each pump to

monitor a leak in the pump head tubing and one (1) calibration chamber for

each pump. The specification for peristaltic pumps are listed in Appendix

ISchedule(I-6)

Calibration Gauge

The calibration gauge is used for calibration the flow rate of a

Peristaltic pump. They are also used to periodically monitor the performance

and accuracy of the chemical injection system. The gauge can also be used

as the primary containment reservoir of a fluid that will be pumped into a

chemical injection system.

To check the pumping rate of a Peristaltic pump, isolate the chemicalin the tank from the gauge. The decal on the gauge glass has two individual

calibrated scales. The scale on the left side is a volume scale in millimeters;

in a one-minute test, the scale will read the pump rate in millimeters. The

scale on the right side will depend on what type of flow rate is required; i.e.

U.S. Gallons Per Day (USG), Gallons Per Hour(GPH1, Liters Per Day


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(LPD), or Liters Per Hour (LPH). By keeping the isolating valve closed and

observing the number of marks the fluid level passes in one minute. This

will giving the actual chemical pump rate. If the rate is not the one desired.

make an adjustment to the chemical pump feed rate and conduct as many

one-minute tests as is necessary to set the chemical pump rate to the rate

desired.

Operation

The alum dosing system is provided with two alum feed pump control

panels, panel nameplate numbers are WN04-60CP-001 and -002. The Front

of Panel Mounted Devices are:


DriveAlum Feed Pump Hand-Off-Auto three position selector

switch (one for

60-HS-

each pump)60-HYK-Hand Control potentiometer (4 20 mAdc signal)60-HC-

(one for each pump)

DriveInverter Fail indicator (one for each pump)60-YL-

DrivePump Fail indicator (one for each pump)60-YA-

--Pump1/Pump2/Both three position selector switch60-HS-

DrivePump Speed digital indicator (one for each pump)60-SI-

DrivePump Run indicator (one for each pump)60-YL-

Alarm

LogicReset pushbutton (one for each pump)60-HS-

WN04-

25CP-

Raw Water Flow digital indicator60-FI-

005

60-PSH-High Discharge Pressure Alarm indicator (one for each

pump)60-PAH-

60-LSH-Leak Detect Alarm indicator (one for each pump)60-LAH-

Elapsed time meter (one for each pump)60-ETM-

Dosage Control module (one for each pump)60-HYK-

The respective Hand-Off-Auto selector switch is control operation of

Alum Feed Pumps. In Hand mode pump speed has been controlled by Hand

Control potentiometer. In Auto mode pump speed shall be controlled byDosage Control module and Raw Water Flow 4 20 mAdc signal.

Pump1/Pump2/Both selector switch is control which pumps are controlled in

Automatic mode. Pumps shall not run in any mode when respective E-Stop

is activated. when High Level switch is activated at pump pan, the Leak

Detect indicators is illuminated and maintained also High Pressure indicators

is illuminated and maintained when High Pressure switch is activated in


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pump discharge line. As well as fail indicator is illuminated and maintained

when Inverter Fail, Leak Detect, or High Pressure conditions exist. Alarm

Reset pushbuttons is enable respective Alum Pump to run after fail

conditions have been eliminated. The following unpowered contacts for

signals are provided to Distributed I/O chassis connected to Main PLC

Control Panel:

a. Alum Feed Pump run (2).

b. Alum Feed Pump fail (2).

POLYMER SYSTEM

Introduction

Polymers commonly employed as a coagulation aid for settling water

treatment sludge. Polymer system has been skid mounted on modules with

equipment, interconnecting piping, fittings, interconnecting wiring, and

controls provided within limits of modules as shown on the drawings.

System has been prepiped and prewired by manufacturer, only final

connection of piping, control wiring, and electrical service is requiring.

Overall dimensions of preparation system not to exceed 5 m long by 2.25 mwide by 2.5 m high. Polymer system ( has Tag No. WN0004-60PS-001,

002) has been integrated equipment package capable of preparing

homogeneous polymer solution using automatically controlled sequential

batch type operation. The data sheet of the polymer system is listed in

Appendix I-Schedule (I-7)

The major equipments that mounted on the modules of polymer system are :

A- Hopper Loader :The suction nozzle is inserted into the suction hopper and draws in the

material which is to be conveyed. The conveying valve moves into the

"conveying" position at the beginning of the conveying cycle. The blower

generates a low pressure in the material hopper, causing material to be

drawn in (fig. 4.-1a- Appendix-II- Schedule (II-3) ). At the same time the

conveying air filter separates the material from the conveying air. When the

preset conveying time has elapsed the conveying valve switches into the

filter cleaning position. The filter is cleaned by the blower return air (fig. 4.-


33/55

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1 b- Appendix-II), the low pressure in the material drops. The material in the

hopper presses against the outlet flap; when there is a sufficiently large

volume of material, the valve opens and the material flows out. When the

material hopper is empty, the outlet flap automatically closes and a new

conveying cycle begins. The process is repeated until the hopper under the

FG has been filled and the outlet flap can no longer close. The conveying

process is then interrupted. (fig. 4.-lc- Appendix-II). A new conveying cycle

starts when the material has dropped sufficiently to allow the outlet flap to

close.

B- Dry Polymer Feeder:The volumetric feeder type is provided to the dry polymer feeder that driven

by 1800 rpm dc feeder motor with capacity (0-9) kg/hr. Also extension

hopper with low level switch and air operated valve on feeder discharge (toisolate feeder from environment between cycles) are provided with it.

C- Inlet Water System:

It is consist of the following items:

-In-line inlet filter to remove suspended material from water supply-Pressure reducing valve to Maintain downstream pressure as required

for proper operation of system.

-Pressure switch to activate when insufficient pressure for properoperation.

-Pressure gauges for visual indication of water pressure.-Air-operated ball valve to start and stop water flow.-Flow control valve to regulate flow to polymer dispersing unit.-Differential pressure switchto activate alarm when insufficient flow

for proper operation.

-Metric connection/adaptor fitting for plant water feed to the inletwater system.

D- Polymer Solution Tank:It is consist of three chamber tanks; Preparation, Ripening and Withdrawal

chamber and each chamber are provided with agitators (mixer) except

Withdrawal chamber , they mix the prepared solution and enforce the

ripening process. The tank is construct of Fiberglass reinforced polyester

with capacity: 2,835 liters, nominal.


34/55

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Polymer Feed System

Continuous feed of polymer solution from polymer solution tanks were

taken by means of solution feed assembly consisting of progressing cavity

pump with variable speed drive and post-dilution assembly with rotameter,

solenoid valve, and static mixer capable of diluting solution to 0.1% for feed

to point of application.

The major equipments of the polymer feed system are :

A- Polymer Solution Feed Pumps (WN04-60PU-005, 006, 007, 008):The Progressing cavity pump is capable of pumping polymer solutions or

liquid polymers with apparent viscosities of up to 45,000 CP with capacity

180-1800 liters/hr.

B- Dilution Water System:It is provided with solenoid valve (to start and stop dilution water flow),

manual valve (to regulate dilution water flow rate between specified ranges)

and flow indicator rotameter for visual indication of dilution water flow rate.

C- Post-Dilution Unit:It is consist of static mixer in clear PVC housing and calibration cylinder

constructed of clear PVC with end caps.

Operation

A- Polymer Prep System:

It is Provided with two Dry Polymer Control Panels and panel nameplate

numbers are WN04-60CP-003 and -005. The Front of Panel Mounted

Devices:

Designation Description/Range Interface

60-HS-101-APolymer System Hand-Off-Auto threeposition selector switch

--

60-YL-101-B Power System Run indicator --

60-YA-101-B Volumetric Feeder Fail indicator Drive

60-YA-101-D Wetter Fail indicator Overload

60-PAL-101-A Loss Of Dilution Water indicator PSL-


35/55

)34(

60-YA-101-A General Alarm Fail indicator --

60-SCU-101 Manual Volumetric Feeder Control module Drive

60-LAL-101 Feeder Hopper Low Level indicator LSL-

60-LAHH-101 Mix Tank High Level indicator LSHH-

60-LALL-101 Mix Tank Low Level indicator LSL-

60-PAL-101-B Loss Of Air Pressure indicator PSL-60-YL-101-E Power On indicator --

60-HS-101-B Mixer Hand-Off-Auto three position selector

switch (one for each Mixer)

Motor Starter

60-YL-101-C Mixer Run indicator (one for each Mixer) Aux contacts

60-YA-101-C Mixer Fail indicator (one for each Mixer) Overload

60-YL-101-F System Enabled indicator --

60-YL-101-A Tank No. 1 Feeding indicator --

60-YL-101-B Tank No. 2 Feeding indicator --

60-YL-101-C Tank No. 1 Filling indicator --

60-YL-101-D Tank No. 2 Filling indicator --

60-HS-101-C Tank No. 1 Short batch pushbutton --60-HS-102-C Tank No. 2 Short batch pushbutton --

60-YL-101-G System not enabled indicator --

Polymer System and Mixer Hand-Off-Auto switches are both in Auto

position; Polymer System has been automatically cycle to prepare aged

polymer solution. On Low Level in mix tank feeding, system shall

automatically sequence the following:

(1) Tank Feed and Discharge Valves are change flow path so full mix tank

of aged polymer supplies polymer to Polymer Feed Pumps and mix tankwith low level begins to fill with new batch of polymer solution.

(2) Water supply valve is open and water control valve is operate to maintain

steady flow of water under varying inlet or outlet pressure. If adequate flow

is not maintained as determined by differential pressure

switch, an alarm shall be activated.

(3) Dry polymer feeder is start discharging polymer into disperser.

(4) Polymer/water slurry is directed to filling mix tank and respective mixer

starts.

When polymer solution level rises in filling tank actuating high level probe,the following

shall occur:

(1) Dry polymer feeder and disperser stop and water flow continues for

preset

time adjustable time in PLC to flush disperser and piping.

(2) Adjustable aging time in PLC begins.


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(3) When aging cycle time ends, mixer de-energized and mixing stops.

If low system water pressure is detected, polymer cycle will terminate and

activate alarm. To resume operation, fault must be cleared and reset

activated to clear alarm circuit. When low dry polymer level switch is

activate and maintain Low Level alarm, the reset pushbutton shall clear

alarm and allow process to continue when alarm conditions are eliminated.

The following unpowered contacts are provided to the distributed I/O

control panal:

(1) Polymer system Run

(2) Polymer system Fail

A- Polymer Feed Pump System:

It is Provided with two Polymer feed pump Control Panels and panel

nameplate numbers are WN04-60CP-004 and -006. The Front of Panel

Mounted Devices:


--Polymer Feed Pump No. x Hand-Off-Auto three

position selector switch (one for each pump)

60-HS-105-A.

106-A

DrivePolymer Feed Pump No. x Hand Controlpotentiometer (4 20 mAdc) (one for each pump)

60-HC-105,106

DrivePolymer Feed Pump No. x Inverter Fail indicator (one

for each pump)

60-YL-105-B,

106-B

Drive & PSH-Polymer Feed Pump No. x Fail indicator (one foreach pump)

60-YA-105-B.106-A

SCU-Pump1/Pump2/Both two position selector switch60-HS-105-B

DrivePolymer Feed Pump No. x Speed digital indicator(one for each pump)

60-SI-105, 106

DrivePolymer Feed Pump No. x Run indicator (one for

each pump)

60-YL-105-A,

106-A

Fail LogicPolymer Feed Pump No. x Reset pushbutton (one for

each pump)

60-HS-105-C,

106-C

DrivePolymer Feed Pump No. x Elapsed Time meter (onefor each pump)60-ETM-105,106

DrivePolymer Feed Pump No. x Dosage Control module

(one for each pump)

60-HYK-105,

106

PSH-Polymer Feed Pump No. x High Pressure indicator(one for each pump)

60-PAH-105,106

WN04-25CP-005

Raw Water Flow digital indicator60-FI-101


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The Pump Hand-Off-Auto selector switch is control operation of respective

Polymer Feed Pumps. In Auto mode Pump speed has been controlled with

respective SCU module and flow signal from Flow Control Panel WN04-

25CP-005. Provide I/I Isolator to split flow signal for each SCU module. InHand mode Pump speed has been controlled with respective Speed

potentiometer. When High Pressure discharge switch is activate, the High

Pressure indicator will be illuminate and maintain and Pump fail in any

mode of operation. Reset pushbutton is allow pump to operate and reset

alarm indicators when alarm conditions have been eliminated. The following

unpowered contacts are provided :

(1) Polymer Feed Pump Run (2).

(2) Polymer Feed Pump Fail (2).

CLEARWELL/HIGH SERVICE PUMP STATION

Introduction

Filtered water is treated with chlorine and flows through the contact tank to

the treated water storage tank TWST (clearwell) via yard piping and gravity

flows. The TWST is a two chamber tank over which the trated waterpumping station TWPS ( high service pump station) is located, arranged

with bowl type suspended centrifugal pumps, spanning the two tank

chambers and located within a dedicated building. The TWPS pumps

potable water to the elevated storage tank and distribution system. The

elevated tank provides the controlling static head within the system. The

treated water pumps are turned on and off manually to maintain water in the

elevated water tank. Over ride facilities for start and stop and fault systems

will override the manual start commands if necessary. Four pumpsets are

provided in total to operate as 2 duty and two standby operating at singlespeed. Additional equipment provided in the building includes the electrical

control, electrical check valve, surge relief valve, pipework and manual

valves, reduced pressure principle backflow preventer for potable and non-

potable water systems and air compressor with its control for

hydropneumatic surge tank. The data sheet of high service pumps are listed

in Appendix I Schedule (I-1)


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Electric Check Valve

Electric check valve is consist of main valve assembly and system of

controls and has been installed on discharge piping of high service vertical

turbine pumps with design operating Flow: 580 m3/hr at 70 meters of head

operating pressure. Valve is used to control surges associated with starting

and stopping of pumps and operation take place by means of solenoid pilots

and powered by water pressure obtained from inlet or outlet side of main

valve. The electric check valve is controlled by high service pump control

panel (WN04-50CP-001)

Surge Relief Valves

Surge relief vale is consist of main valve assembly and pilot system

and has been installed on discharge piping of vertical turbine pumps. Design

operating conditions is specified in Schedule that listed bellow.

Valve is open when system pressure exceeds its pressure setting and

throttle as necessary to limit system pressure to pre-set maximum pressure.

When pressure subsides below pre-set maximum valve shall close tight.

Hydropneumatic Surge Control System

Pressure transients in pipeline system following pump shutdown/start-up

from design operating conditions must not cause cavitation nor water

SCHEDULE - SURGE RELIEF VALVES

LocationTag Number Factory Set

Opening

Pressure,kPa

Flow Relief

Capacity, (m3/hr)

Valve Size,

mm

High Service

Pump

820120020050-PSV-012


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column separation at any point in pipeline system and must not exceed

pressure rating of piping at any point in pipeline system. Therefore

hydropneumatic surge control system is used to maintain system pressure

below 600kPa. Hydropneumatic surge control system is include surge tank,

air compressor, and automatic water level control system.

A- Hydropneumatic Surge TankSurge tank has been constructed of carbon steel for maximum allowable

working pressure of 1655 kPa. Surge arrestor is provided with flanged line

connection, adequate supports, lifting lugs, and couplings for drain, safety

relief valve, and level control system as well as it is provided with elliptical

manway.

Preliminary surge tank size (WN04-50TK-003) :

Volume, 6.4 m3

Diameter, 1.5 mLength, 3.7 m

Configuration Horizontal

B- Level Control SystemPurpose of level control system is to control water level in pressure vessel

within designed range depending on number of pumps in operation and

associated dynamic heads. Level control device is consist of associated or

five. stainless steel PVC coated electrodes and control panel with all

required relays and timers. When water level is above normal operating

range, air must be added through solenoid valve from air compressor. When

water is below normal operating range, air shall be vented from surge

arrestor through separate solenoid valve. High and Low alarm signals have

been generated when water level is out of range for time period exceeding

time delays. Time delays is used to prevent false alarms and adding or

venting air during minor fluctuations that last short period of time. Level

control panel (WN04-50LCP-004)is house all relays, time delays, indicators,

and alarm contacts and it is send the following unpowered contacts for

signals to Remote I/O chassis connected to Main PLC Control Panel:

a. High Level Alarmb. Low Level Alarm

C- Air Compressors

They are represent two (2) identical air compressor systems at pump station.

Each system consisting of compressor, motor, V-belt drive and totally


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enclosed belt guard, all mounted on air receiver. Suitable piping between

compressor and receiver is included and capacity of air receiver is 450 liter.

Air compressor system is provided with Control Panel (WN04-50CP-002)

and it is Front of Panel Devices are :


Motor

Starter

Compressor No. 1 Hand-Off-Auto 3

position

50-HS-001- A

selector switch

Starter AuxContacts

Compressor No. 1 Run indicator50-YL-001

OverloadCompressor No. 1 Fail indicator50-YA-001

Run SignalCompressor No. 1 Elapsed Time meter50-ETM-001

Motor

Starter

Compressor No. 2 Hand-Off-Auto 3

position

50-HS-002

selector switch

Starter AuxCompressor No. 2 Run indicator50-YL-002Contacts

OverloadCompressor No. 2 Fail indicator50-YA-002

Run SignalCompressor No. 2 Elapsed Time meter50-ETM-002

alternatorCompressor Sequence 1-2/2-1/Auto50-HS-001-B

Where operation of compressors is controlled by Hand-Off-Auto and

Compressor Sequence selector switch. In Hand mode compressor has been

run continuously until High Pressure switch is activated. In Auto modecompressors is run when Low pressure switch is activated and stop when

High Pressure switch is activated. Compressors must be alternate in 1-2, 2-1,

or automatically as Lead and Lag compressor.

Operation

The high service vertical turbine pump is provided with one control panel.

Panel nameplate number is High Service Pump Control Panel WN04-50CP-

001. Where the Front and Rear of Panel Mounted Devices (where x is 1, 2,5, 6) are listed in Appendix-II-Schedule (II-4). The following field devices

and instruments are provided Clearwell/High pumps station:

Two High-High Level Float Switches.

Two Submersible Level Transmitters.

One Electronic Pressure Gauge Transmitter.

One Pressure Gauge, minimum of 100 mm face, calibrated to read


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approximately midrange of discharge pipe pressure, range of 0 to2,000 Kpa.

Where Ranges and Activation Levels of the level switch are :

Range/Level

DesignationDescription/Range(m above floor)

50-LE/LIT-Clearwell No. 1 Level sensor/transmitter0-10.0 m

50-LE/LIT-Clearwell No. 2 Level sensor/transmitter0-10.0 m

50-LSHH-Clearwell High-High Level float43.00 / 8.00

50-LSLL-Clearwell Low-Low Level float38.00 / 3.00

Bottom of Clearwell 35.00

50-PSL-Header Low Pressure switch500 kPa

50-PSH-Header High Pressure switch850 kPa

The operation of pumps is controlled by Pump Hand-Off-Remote selectorswitch. In all modes of operation respective Clearwell Low-Level switches

will inhibit operation of Pumps. Clearwell No. 1 Low-Low Level switch will

inhibit Pumps 1,2, and future Pump 3 when active. Clearwell No. 2 Low-

Low Level switch will inhibit Pump 5, 6, and future Pump 4 when active.

Pumps shall not restart until Level Reset pushbutton is activated. In Hand

mode pumps are pump continuously unless Low-Low Level switch is

activated but in Remote mode pumps must be controlled manually from the

plant monitoring PC located in the administration building where automatic

control of the high service pumps is not provided. So pumps must be startedand stopped manually by operator action.

Secondary Control

Levels

Primary Control Levels

in Meters Above Floorin Meters Above Floor

(WTP Reservoir)(IPS Reservoir)Pump Sequence

4.842.56Lead On

5.372.03Lag On

5.901.5Lag-Lag On

1.505.90Lead Off

2.035.37Lag Off2.564.84Lag-Lag Off

When pump is requested to operate both the Normal and Emergency

Solenoids on respective Pump Check Valve has been energized and Valve

Start Delay Timer shall be initialized. Pump shall shutdown and illuminate

and maintain Fail indicator and Check Valve Fail to Open indicators if


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Valve Start Delay Timer times out and Check Valve limit switch contacts

have not closed. Normal pump shutdown sequence is to de-energize the

Normal Solenoid of Pump Check Valve and wait for Pump Check Valve

limit switch contacts to open and then stop pump and initialize the Restart

Delay timer. Emergency pump shutdown occur if Pump Check Valve limit

switch contacts open and pump has not been requested to stop. This case

will illuminate and maintain Pump Fail indicator and initialize the Restart

Delay timer. Pumps shall not re-start until respective Restart Delay Timer

has timed out. In case of power loss, even momentary, Normal and

Emergency Solenoids on Pump Check Valves must be de-energized. On

power up of panel Delay Power Failure Timers will inhibit pump operation

until timers have timed out. When respective Clearwell High-High level

switch is activated, the level System High-High Alarm indicator shall be

illuminated and maintained and alarm indicator is deactivate by Level Reset

pushbutton.The following unpowered contacts for signals are provided to Distributed

I/O chassis connected to Main PLC Control Panel:

a. Check Valve Fail to Open (4)

b. Clearwell High Level Alarm (high-high condition) (2)

c. Clearwell Low Level Alarm (low-low condition) (2)

d. Header Low Pressure

e. Header High Pressure

f. Pump run (4)

g. Pump fail (4)

and retransmit the following 4 20 mAdc signals using Isolation Converters

to Distributed I/O chassis connected to Main PLC Control Panel:

a. Clearwell No. 1 Level

b. Clearwell No. 2 Level

c. Plant Flow

d. Discharge Header Flow


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APPENDIX - I

Schedule (I-1)

RAW WATER VERTICAL TURBINE PUMP AND ELECTRIC MOTOR CHARACTERISTICS

Pump Characteristics

WN04-20PU-001,-002,-005,-006Pump Tag No.

Raw Water PumpsPump Designation

Raw Water Pump StationPump Location

4No. of Units

2No. of Stages per Pump

River WaterMaterial Being Pumped

Fluid Temperature-degrees C

50Minimum Solids Size (mm.)

Constant SpeedConstant or Variable SpeedEnclosed ImpellerConfiguration (1)*

450 (To Be Confirmed)Minimum Column Size (mm.)

450 (To Be Confirmed)Minimum Discharge Size (mm.)

550 (To Be Confirmed)Rated Capacity (m3/hour)

11.2 (To Be Confirmed)Total Dynamic Head at Rated Capacity (meters) (2)*

300 (To Be Confirmed)Minimum Capacity (m3/hr)

----Total Dynamic Head of Minimum Capacity (meters) (2)*

82 (To Be Confirmed)Minimum Efficiency of Pump at Rated Capacity

1000 (To Be Confirmed)Maximum Pump Speed (rpm)

----Minimum Pump Speed (rpm)

ProductLubrication (3)*

Abrasive ServiceSpecial Requirements (4)

Electric Motor Characteristics (If Applicable)

22.4 kWPower, kW

1000Nominal Speed (rpm)

TEFCEnclosure Type

400VVoltage

3/50Phase/Cycle (Hertz)

----Special Requirements

Schedule (I-2)

LOW RATE FILTER BACKWASH VERTICAL TURBINE PUMP AND ELECTRIC MOTOR

CHARACTERISTICS


WN04-40PU-001,-002Pump Tag No.

Low Rate Filter Backwash PumpsPump Designation

Filter BuildingPump Location

2No. of Units

1No. of Stages per Pump

Finished WaterMaterial Being Pumped

Fluid Temperature-degrees C

25 (To Be Confirmed)Minimum Solids Size (mm.)


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ConstantConstant or Variable Speed

Enclosed ImpellarConfiguration (1)*

400 (To Be Confirmed)Minimum Column Size (mm.)

400 (To Be Confirmed)Minimum Discharge Size (mm.)

385 (To Be Confirmed)Rated Capacity (m3/hour)

4.57 (To Be Confirmed)Total Dynamic Head at Rated Capacity (meters) (2)*

---Minimum Capacity (m3/hour)---Total Dynamic Head of Minimum Capacity (meters) (2)*

80 (To Be Confirmed)Minimum Efficiency of Pump at Rated Capacity

1,000 (To Be Confirmed)Maximum Pump Speed (rpm)

---Minimum Pump Speed (rpm)

ProductLubrication (3)*

---Special Requirements


6 (To Be Confirmed)Power, kW

1,000 (To Be Confirmed)Nominal Speed (rpm)

TEFCEnclosure Type

400VVoltage

3 ph/50 hzPhase/Cycle (Hertz)

----Special Requirements

Schedule (I-3)HIGH RATE FILTER BACKWASH VERTICAL TURBINE PUMP AND ELECTRIC MOTOR

CHARACTERISTICS


Pump Tag No. WN04-40PU-003,-004

Pump Designation High Rate Filter Backwash Pumps

Pump Location Filter Building

No. of Units 2

No. of Stages per Pump 1

Material Being Pumped Finished WaterFluid Temperature-degrees C

Minimum Solids Size (mm.) 25 (To Be Confirmed)

Constant or Variable Speed Constant

Configuration (1)* Enclosed Impellar

Minimum Column Size (mm.) 450 (To Be Confirmed)

Minimum Discharge Size (mm.) 450 (To Be Confirmed)

Rated Capacity (m3/hour) 1175 (To Be Confirmed)

Total Dynamic Head at Rated Capacity (meters) (2)* 17 (To Be Confirmed)

Minimum Capacity (m3/hour) ---

Total Dynamic Head of Minimum Capacity (meters) (2)* ---

Minimum Efficiency of Pump at Rated Capacity 80 (To Be Confirmed)

Maximum Pump Speed (rpm) 1,000 (To Be Confirmed)

Minimum Pump Speed (rpm) ---

Lubrication (3)* Product

Special Requirements ---


Power,kW 75 (To Be Confirmed)

Nominal Speed (rpm) 1,000 (To Be Confirmed)

Enclosure Type TEFC


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Voltage 400V

Phase/Cycle (Hertz) 3 ph/50 hz

Special Requirements ----

Schedule (I-4)HIGH SERVICE VERTICAL TURBINE PUMP AND ELECTRIC MOTORCHARACTERISTICS


Pump Tag No. WN04-50PU-001,-002,-005,-006

Pump Designation High Service Pumps

Pump Location Clearwell and High Service Pump

Station

No. of Units 4

No. of Stages per Pump 2

Material Being Pumped Finished Potable Water

Fluid Temperature-degrees C 10 to 40 degrees CMinimum Solids Size (mm.) 12

Constant or Variable Speed Constant

Configuration (1)* Enclosed Impellar

Minimum Column Size (mm.) 450 (To Be Confirmed)

Minimum Discharge Size (mm.) 450 (To Be Confirmed)

Rated Capacity (m3/hour) 580 (To Be Confirmed)

Total Dynamic Head at Rated Capacity (meters) (2)* 70 (To Be Confirmed)

Minimum Capacity (m3/hour) 300 (To Be Confirmed)

Total Dynamic Head of Minimum Capacity (meters) (2)* ------

Maximum Static Head (Meters) 47 (To Be Confirmed)

Minimum Static Head (Meters) 42 (To Be Confirmed)

Minimum Efficiency of Pump at Rated Capacity 80 (To Be Confirmed)

Maximum Pump Speed (rpm) 1500 (To Be Confirmed)

Minimum Pump Speed (rpm) -------

Lubrication (3)* Product

Special Requirements See Note 4


Power,kW 120kW

Nominal Speed (rpm) 1,500

Enclosure Type TEFC

Voltage 400V

Phase/Cycle (Hertz) 3 ph/50 Hz

Special Requirements See Note 4


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Schedule (I-5)

SUBMERSIBLE NONCLOG PUMPS(WET INSTALLATION)

Name of Pump(s) De-Silting PumpsSludgePumps

WastePumps

Tag Number(s)WN04-20PU-008, 009

WN04-35PU-001, 002, 003WN04-70PU-001, 002, 003

Number of Pumps 2 3 3

Fluid Pumped River Water and Silt /ClarifierSludge

FilterBackwash /

Sludge

Sand Slurry Lagoons

Fluid pH 9-Jun 9-Jun 9-Jun

Max Fluid

Temperature, C

40 40 40

Minimum SphericalSolids

100 100 100

Size (mm)

Special PumpRequirements

Vortex ImpellerNon-clogImpeller,

Non-clogImpeller,

CorrosiveEnvironment

CorrosiveEnvironment

Motor RatedElectrical Input

Documents

WTP Balad Roz