Purified Water Generetion System Operation1

8/10/2019 Purified Water Generetion System Operation1

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PURIFIED WATER

The water that has been

treated to filter out

sediments, remove alldissolved minerals and kill all

micro organisms.


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BORE WELL

(RAW WATER

SOURCE)

SODIUMHYPO

CHLORITE

SOLUTION

(CHLORINE

DOSING)

The raw water is having suspended solids, dissolved impurities, colloids, organics, bacterialimpurities etc and resulting in high TDS of the Raw Water. All the impurities will foul the RO

membranes or any filters if used down stream. Hence, it is proposed to reduce the impurities to

desired level by pre-treatment.

Sodium H ypo Chlor ite Dosing Soluti on: -Provided to disinfect the feed water as well as control

the bacterial concentration in the subsequent steps. Free chlorine is maintained around 1 2 ppm.

Free chlorine in water reduces the possibility of bacterial germination in Multi grade filter andSoftener, which are otherwise potential breeding ground.


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MGF SERVICE CYCLE

RWP

FI

FROMBOREWELL

Multi Grade Fil ter: -

MGF is provided to reduce

turbidity & suspended

particles up to 100. MGF

is designed with multi

layer of pebbles, gravels

and mix sand.


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SOFTENER SERVICE

FROMMGF

BMT

BRINE

SOL.

TANK

(NaCl)

Softener unit is provided to

reduce the hardness of water up

to


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NORMAL OPERATION OF

SOFTENER

Ca(HCO3)2 + 2NaR CaR2 + 2NaHCO3(Calcium bicarbonate) ( Sodium Resin ) (Calcium Resin) (Sodium bicarbonate)

MgSO4 + 2NaR MgR2 + Na2SO4(magnesium sulphate) (Sodium Resin ) (magnesium Resin) (Sodium sulphate)

Regeneration of Softener

CaR2 + 2NaCl 2NaR + CaCl2

(Calcium Resin) (Sodium Chloride) (Sodium Resin) (Calcium Chloride)

MgR2 + 2NaCl 2NaR + MgCl2(Magnesium Resin) (Sodium Chloride) (Sodium Resin) (Magnesium Chloride)


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FI

FEED

REJECT

U

F

UF PRODUCT STORAGE TANK 1101

M

C

F

TANK

Micro n Cartr id ge Fil ter (MCF):-MCF with 5 cartridge is provided before ultra filtration (UF)

module as additional safety for ultra filtration from suspended particles.

Ultra Fil trat ion module (UF):-UF system is a membrane separation process. UF employs a cross

flow path of water across a membrane where the purified water and the reject are separated out

continuously. The reject water containing the separated bacteria is continuously drained and henceavoiding the accumulation of bacteria.


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pH Dosing

(NaOH)

1102

Anti Scalent

Dosing 1103SMBS

Dosing 1104

FROM UF PRODUCT

STORAGE TANK 1101M

C

F

PG

AUTO

DUMPVALVE

SP SP

MCF DOSING SECTION

BUFFER

TANK 2101

pH Correct ion Dosing :-Provided to maintain the quantity of permeates. An alkaline pH also ensures the removal of

dissolved CO2from the system during desalination.

Ant i Scalent Dosing:-The salt during desalination tends to deposit on membrane surface thus affecting the

performance of RO system. To avoid deposition of salts on RO membranes Anti Scalent dosing is provided which

reduces salt deposition on RO membranes and increases the cleaning duration.

Micro n Cartrid ge Filter (MCF):-High suspended particles in water may choke membrane passage and may also

damage the membranes thus affecting performance and life of RO system. 5 Cartridge filter removes the suspended

particles from the feed water.

Sodium Meta Bi Sulphate Dosing;-The free chlorine in feed water is injurious for RO Polyamide membranes and is

removed from water by SMBS Dosing.


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FROM

BUFFER

TANK

H.P.P

FI

FI

FI

REVERSE OSMOSIS (RO) IN SERVICE

FEED PT

AUTO

VALVE

TO BT

REJ PT

REJVALVE

FEED

PRODUCT

RECYCLE

MEMBRANE MEMBRANE

MEMBRANE MEMBRANE

PARTIALLY

OPEN

Reverse Osmos is:-A process which removesthe dissolved salt molecules & metallic ions from

water by forcing it through polyamide semi-

permeable membrane by operating the system

above the osmotic pressure and each membrane

is designed for NaCl salt rejection by 95- 97%.

The pretreated water is passed through RO

Module for Primary Salt Reduction from Water.


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ROPROD.

DILUATE

INLET

CONCEN

. INLET

FI

REJECT

PRODUCT

PRODUCT

EDI UF OPERATION

EDIUV LAMPS 2101

Electro De Ion ization (EDI):-The permeate water from RO system is further to be treated

by passing through resin bed for removal of dissolved salt (approx < 5ppm) and to bring down the

overall conductivity


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DISTRIBUTION PUMP

3101

EDI PRODUCT

The purified water generated is stored in Purified Water Storage Tank.

PURIFIED WATER

STORAGE TANK


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UV LAMAPS

USER POINTSFROM PURIFIEDWATER TANK

Purified water from the storage tank is distributed

through closed loop to user points. Each user point is

designed with zero dead diaphragm valves to keep

the loop in circulation.

A UV is provided in the supply loop to check the

microbial in the supply loop.

On line TOC (Total Organic Carbon) analyzer with

transmitter is also provided.

TO

PURIFIEDWATER

STORAGE

TANK

TOC


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Documents

Purified Water Generetion System Operation1