14 Waste Water Management Final

Waste Water Management

WasteWater Management 149

Waste Water Management150

• Pump sewage to a main sewer.

• If a main drain is available connection must be made.

• Connection via gravity drainage system, or by way of a pumpingstation if the on site levels dictate this.

• Available in single or twin pump options depending uponnumberhouses/people served.

Pump Stations

• Due to the superiority of the packaged sewage treatment plants,septic tanks are not the recommended option for 'off-mains' drainageschemes.

• If specified Kingspan Environmental/Drain Center Civils can supplyseptic tanks.

• The Alpha range carries the BBA certification with the protection ofthe MK1 safety cover and frame.

• Settled sewage from septic tanks must be discharged to a soakawaysystem away from any watercourse.

Septic Tanks• Cesspools are large holding tanks used for sites where no mains

connection, or suitable watercourse or ground conditions areavailable.

• All Cesspools are BBA certified

• Cesspools are more commonly used for temporary applications likebuilding sites or show grounds.

• Silage tanks are also available and have a chemically resistantlining to enable storage of silage or chemical toilet waste.

Cesspool

• If no main sewer is available the recommended solution is toutilise a sewage treatment plant.

• Packaged sewage treatment plants, like Kingspan’s Entec Biotecrange, are available from small single house units to large multistaged units for large housing estates or hotels.

• Packaged sewage treatment plants fully treat sewage to allow thetreated water to be released into a watercourse or soakaway system

Treatment Plants

PUMP STATION

CONNECT TO SEWER

SEPTIC TANK*

TREATMENT PLANT

CESSPOOL

V>100

V = Percolation ValueLocal standards may influence final selection* Treatment plant is the preferred option

YES

NONO

YES

NO

NO

Access towater course?

NO

Sufficient landarea?

YESGravity Connection Possible

V<100

Site Assessment

YESAccess to mains

System Selection Flowchart



Contact your local branch for further information on waste water management.See pages 218-219 for branch contact details.



When a Pump Station should be usedThe law states the following:A. If you can reach the main sewage system by gravity, you must do so.B. If you can access the main sewage system by using a pump station,this must be your next option. If neither A or B apply you shouldrecommend a Kingspan Treatment Plant

Choosing the Correct System

• Four chamber diameters 1.0, 1.25, 1.8, 2.6m• Designed to cater for Domestic & Commercial sewage applications• Conforms to building regulations Part H1• Caters for applications requiring 24 hour storage• Chamber depths from 2.0-4.0m(for deeper please refer to Kingspan)

• Alarms and kiosks available

Specifying your Pump StationEstablish the following to correctly specify the pump station:• How many houses will the station be servicing?• What is being pumped? (Untreated domestic sewage or treated water)• What distance do you need the station to pump?• What distance does the waste need to be pumped?• Is the inlet pipe requirement 110mm or 160mm?• What is the anticipated inlet drain invert?• How high do you need the waste to be pumped?

• Secure lockable covers for pedestrian safety• Choice of 110mm or 160mm inlet connectors• High level breakdown alarm• Available in various invert depths• Optional standard and bespoke service agreements• 24 hour storage options• Guide-rail mounted pumps• Rigid internal pipe-work• All float switches are included, and control panel with alarm arestandard features for twin pump stations

• Electrical kiosks available

Key Benefits

Hillmaster & Pump for 24 Range

Hillmaster Range

1.0m Pump 1.25m Twin Pump

1.8m Twin Pump Pumps for 24 2.6m

Description 1.0m 1.25m 1.8m 2.6m

Sewage • • • •

Effluent • • • •

Twin Pumps • • • •

Single Pumps • •

Chamber Depth (m)

2.0 • •

2.5 • •

3.0 • • •

3.5 • • •

4.0 •

m3 flow/day

1.0 •

2.0 • •

5.0 •

10.0 •

20.0 •

50.0 •

m3 flow/day 24hr

Retention (Pumps for 24)

1.0 •

2.0 •

4.0 •

8.0 •

10.0 •

Pump Chamber Selection



It settles the solids in the sewage and then releases the effluent to adrainage field where biological breakdown takes place.Septic Tanks available in GRP or Rotomoulded designs.

How does this work?Septic Tanks receive crude sewage, which is a mixture of solids andliquids. Kingspan’s Entec Alpha Tank uses a three-stage upward flowroute, designed to maximise separation,minimise turbulence and providea low flow discharge zone. All three stages are linked hydraulically.

Effluent DispersalGround conditions are critical to the performance of a septic tankinstallation and some areas are unsuitable. Effluent cannot bedischarged direct to a watercourse.Where water table & the nature of thesoil allow satisfactory absorption, dispersal should be by means of asub-surface irrigation system.

Septic Tanks – What do they do?

No. Residents 4 10 14 22 30 38GRP Entec Alpha Tank 2800 ltr 3800 ltr 4600 ltr 6000 ltr 7500 ltr 9000 ltrRotomoulded Klargester Betu Tank 2730 ltr 3635 ltr 4540 ltr - - -

Septic Tank Selection Chart

Alpha Large CapacityOverall length of drain run required (m) Overall length of drain run required (m)

Time taken Equivalent 2800 3800 4600 6000 7500 9000to fall value of litres litres litres litres litres litres150mm (mins) Vp (sec/mm) 4 people 10 people 14 people 22 people 30 people 38 people20 8 16 40 56 88 120 15230 12 24 60 84 132 180 22840 16 32 80 112 176 240 30460 24 48 120 168 264 360 456120 48 96 240 336 528 720 912180 72 144 360 504 792 1080 1368

Capacity Diameter Height Standard Inlet Product(ltrs) (mm) (mm)* Invert (mm) Code

4** 2730 1760 2420 600 W211409** 3635 1940 2580 600 W2114114** 4540 2000 2830 600 W211424 2800 1905 2565 1000 W2113010 3800 2070 2795 1000 W2113114 4600 2080 3025 1000 W2113222 6000 2390 3200 1000 Special Order30 7500 2516 3540 1000 Special Order38 9000 2650 3550 1000 Special Order

* Including access shaft/standard invert depth ** Rotomoulded Design

Drainage Guide for Perforated Pipe Length for Soakaways

Based upon 500mm trench width, 2m apart.For lengths above 100m it is acceptable to use 1m wide trench and halve the length.



SuperSeptic Treatment Systems

SepticPlus Product Population Diameter Invert toModel Code Equivalent (mm) Base (mm)3800 Litre F01055 6 2070 17956000 Litre Special Order 12 2390 2200

SepticPlus Treatment System

For domestic dwellings without mains drainage, the SuperSeptic systemprovides a lower cost alternative to the existing Entec Biotec range.

• Manufactured using state of the art GRP pressure mouldingtechnology

• Contained within a rigid GRP tank, the structural aeration chamberwill not collapse during desludging

• Designed to require only an annual desludge• Small footprint, discreet 600x600 opening with pedestrian dutycover

• Low cost operation, less than a 60 watt bulb• No electrical or moving parts within the tank• Designed to comply with regulatory bodies descriptive consents• Unit has adjustable inlet invert level• Small air blower can be discreetly situated above ground and up to15m away from unit causing minimal disruption when maintained

• Available for single house or 2 house applications

Key BenefitsBiotec 1-25 Population: Biotec Models 1 – 4• Developed for single and multiple dwellings from 1 to 25 population• BBA/IBA certification 98/3534, conforms to EN 12566 Part 3• Below ground installation• Quiet and odour free• No mechanical or electrical components within the tank• Low running costs• Annual desludge• Hydraulic surge control• 3 drain invert level options• Manufactured under the quality procedures of BS EN ISO 9002• Many thousands of successful installations in the UK• Integral pumpset version available• Under normal domestic conditions a discharge of 20mg/l BOD,30mg/l l S.S. can be achieved

Key Benefits

Where would a Biotec be used?• Individual Houses• Small developments• Office and commercial properties• Upgrading existing septic tanksThe following will help determine model and size required:• Biotec 1 – average house• Biotec 2 – large house/2 average houses• Biotec 3 – 3 houses• Biotec 4 – 4/5 houses

26-750 Treatment Plants available to order

Model No. Biotec 1 Biotec 2 Biotec 3 Biotec 4Product Code W21110 W21112 W21114 W21116Max No. Residents 6 12 18 25Daily Flow (m3/day) 1.2 2.4 3.6 5.0BOD Load (kg/day) 0.36 0.72 1.08 1.5Weight Empty (kg) 200 250 300 320Outside Diameter (m) 1.88 1.88 2.6 2.6Depth (m) 2.2 2.7 2.6 2.6Inlet Invert (m) 1.0 1.0 1.0 1.0Inlet Invert To Base (m) 1.2 1.7 1.6 1.6Outlet Invert (m) 1.1 1.1 1.15 1.15Motor Rating (watts) 60 60 150 150Drainage Fitting (mm) 110 110 110 110

Biotec Treatment Plants

Biotec Treatment Plants



Large Capacity Treatment Plants

Storage Tanks

Silage Tanks

• High and medium rate performance options across a range ofinfluent and effluent qualities

• Adaptable to specific consent requirements including ‘Total Nitrogen’• Low head loss• Minimal footprint area• Single piece tank for rapid installation and reduced costs• Variable invert options• Minimal visual impact (below ground)• Low running costs• May be installed in trafficked area• Compliant with En-12255• Designed for applications selected in compliance with British WaterCode of Practice Flows and Loads

• Low maintenance• Alarm protected

Key Benefits

A Cesspool provides a reliable solution, where the discharge of treatedeffluent is not permissible due to unsuitable ground conditions, or whereinfrequent or seasonal use would prevent the successful functioning ofa Biotec packaged treatment plant.For single dwellings (2 residents only) 18180 litres (4000 gallons) is theminimum allowable capacity.The size should be increased by 6800 litres(6.8m2) for each additional user.

Manufactured using specific chemically resistant resins, these tanks areone-piece factory sealed and tested units of the same dimensions ascesspools. Delivered direct to the farm they can be off-loaded usingordinary farm handling equipment and usually installed within a day.

What do Cesspools and Silage Tanks do?It stores the effluent until it is tankered away.

CesspoolsThe Ezy-Drain comprises of sections of twin wall perforated plastic pipe,surrounded by a synthetic aggregate, wrapped in polyethylene netting.Each 3-metre section is simply joined together by the use of click-fitconnectors, protected by a preformed collar.The synthentic aggregate ismanufactured from recycled expanded polystyrene, engineered to deliveroptimum performance while consistently retaining its form.

Ezy-drain

Capacity Product Length Width Inlet level to(Litres) Code (mm) (mm) base of tank18180 F01056 4320 2800 273022500 Special Order 5090 2800 273027000 Special Order 6190 2800 273036000 Special Order 7740 2800 273045000 Special Order 9460 2800 273055000 Special Order 11180 2800 2730

Cesspools

TypicalDescription Reference Application300mm x 3m EZD-FD1233 Sewage treatmenttwin wall perforated plants and septicpipe with net outer tanks300mm EPS collar EZD-FD1206 All applicationssurround for clickfit connection

Ezy-drain

Silo Capacity Minimum Effluent Tank CapacityLess than 1500m3 20 ltrs. for every 1m3 silo capacity1500m3 30,000 ltrs. plus 6.7 ltrs for every 1m3 silo capacity

in excess of 1500m3

Silage Tanks

These capacities will normally provide at least 2 days storage at peak flow.

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14 Waste Water Management Final