Pollution Control & Waste Water

143 POLLUTION CONTROL & WASTEWATER TREATMENT SYSTEMS

EH Smith provide an unrivalled service in the sourcing and supply of wastewater treatment systems.

EH Smith have access to the full range of solutions, from low maintenance treatment plants for single homes, up to high specification packages for large scale applications.

• Oil / water separators• Package sewage treatment plants• Septic tanks• Cesspools• Attenuation and storm water balancing tanks• Engineered vessels• Package pumping solutions

Pollution Control and WastewaterTreatment Systems

POLLUTION CONTROL & WASTEWATERTREATMENT SYSTEMS

POLLUTION CONTROL & WASTEWATER TREATMENT SYSTEMS 144

SEPARATORSPollution prevention is a critical part of sustainable drainage systems and verified oil separators are designed to prevent watercourse pollution by containing oil and otherhydrocarbons that have entered a drainage system.

The latest range of Conder oil separators fully conform to the both the EnvironmentAgency’s latest PPG3 guidelines and European standard BSEN-858-1-2 and are provento effectively separate oil and water. Under test the Conder Bypass Separator performto less than 1 parts per million and, therefore, protect the environment and public safety.

Class 1 and Class 2 Separators:

Class 1 separators are designed to achieve a concentration of less than 5mg/l of oilunder standard test conditions and should be used when the separator is required toremove very small oil droplets, such as those arising from car park run-off.

Class 2 separators are designed to achieve a concentration of less than 100mg/l oilunder standard test conditions and are suitable for dealing with discharges where alower quality requirement applies (e.g. where the effluent passes to a foul sewer) andfor trapping spillages.

Both classes can be produced as ‘full retention’ or ‘by-pass’ separators.

SIZING FORMULA

In line with PPG3 and recommended testing procedures, the Conder separators shownhave been allocated a ‘Nominal Size’. Use the tables to make your selection. Nominalsize is expressed as CNS for Full Retention Separators and CNSB for BypassSeparators.

The nominal size (NS) of a full retention separator that is required for a catchment area(A) is obtained from the following formula: NS = 0.018 A (m2)

For a bypass separator the formula is: NSB = 0.0018 A (m2)

In addition, capacity for silt storage (C) must be provided, either as an integral part ofthe separator or as a separate upstream unit, according to the following formula (litres)= NS x 100.

Silt capacity for a bypass separator must be provided either upstream of the separatorin the bypass weir chamber and not in the main separating chamber.

CNSB BYPASS SEPARATORSConder’s new range of CNSB Bypass Separators continues to provide the UK’sBuilding, Civils and Construction markets with the most innovative, high performance and value-engineered product possible.

Bypass separators fully treat all flows generated by rainfall rates of up to 5mm/hr.These separators are used when it is considered an acceptable risk not to provide fulltreatment for high flows, for example where the risk of a large spillage and heavy rainfall occurring at the same time is small.

CNSB4.5-50S



CNSB BYPASS SEPARATORS Bypass Separator - Core Range. Class 1 and Class 2

DRAIN INVERT INLET DEPTHS-EXTENSIONSHAFTS(Applicable to Bypass full retention and forecourt separators)

PIPEWORK TYPE, SIZE AND ORIENTATION

Units are supplied with a standard (minimum) invert depth. Extension shafts, site fitted,are available in standard 1.0m lengths. The depth from finished ground level to the topcrown of the main shell should be no more than 2 metres; this may vary dependingupon ground water conditions. Special units are available for deeper installations;please ask our technical sales department for details.

Inlet /outlet pipe work with diameters less than 315mm will be supplied in PVCu, largersizes are GRP Orientation as shown in the above table.

Pre-fix with S for Silt Inclusion*Larger models up to CNSB1000 are available on request

Features & Benefits:• Innovative design• Competitively priced• Small & easy to handle• Major installed cost savings• Easy to service• Fully compliant to the Environment Agency’s PPG3 guidelines• An Environment Agency verified manufacturer• Fully tested and verified with a range from CNSB 1.5 to CNSB 1000 (class 1 & 2)• Exceed industry standards• Full BSI certification• Silt & non-silt options• Prevents pollution & reduces risk

Application areas:• Car parks• Roadways & major trunk roads• Light industrial & goods yards• Discharge to a sensitive environment• As part of a suds scheme

CNSB1.5/2* 1.5 833 1400 1000 1400 150 2150 1680 1630CNSB3/2* 3 1667 1400 1000 1400 300 2150 1680 1630CNSB4.5/2* 4.5 2500 1700 1000 1785 450 1825 1220 1170CNSB6/2* 6 3333 1700 1000 1975 600 1825 1220 1170CNSB8/2* 8 4444 1700 1000 2165 750 1825 1220 1170CNSB10/2* 10 5556 1700 1000 2485 1000 1825 1220 1170CNSB15/2* 15 8333 1800 1200 2670 1500 2100 1400 1350CNSB20/2* 20 11111 1800 1200 3115 2000 2100 1400 1350CNSB25/2* 25 13889 1800 1200 3555 2500 2100 1400 1350CNSB30/2* 30 16667 2200 1500 3520 3000 2640 1720 1670CNSB40/2* 40 22222 2200 1500 4090 4000 2640 1720 1670CNSB50/2* 50 27778 2200 1500 4655 5000 2640 1720 1670CNSB60/2* 60 33333 2600 1800 4415 6000 3300 2025 1975CNSB70/2* 70 38889 2600 1800 4835 7000 3300 2025 1975CNSB80/2* 80 44444 2600 1800 5225 8000 3300 2025 1975CNSB90/2* 90 50000 2600 1800 5620 9000 3300 2025 1975CNSB100/2* 100 55556 2600 1800 6010 10000 3300 2025 1975CNSB135/2* 135 75000 2500 6781 13500CNSB1000/2* 1000 555556 Details on application

Unit Nominal Area Length Diameter Length Silt Overall Inlet OutletReference Size Drained excl. Silt inc. Capacity Height to to

sq. m Silt Litres Base Base



CNS FULL RETENTION SEPARATORSConders full retention separators are designed for use in high-risk spillage areas suchas vehicle workshops, Fuel distribution depots and Scrap yards. Each separatorincludes the necessary requirements for oil & silt storage, coalescer and automatic closure device to retain excess stored oil and to avoid contamination of the water discharged. Units are Available in Class 1 or Class 2.

Full retention separators treat the full flow that can be delivered by the drainage system, which is normally equivalent to the flow generated by a rainfall intensity of 65mm/hr. On large sites, some short term flooding may be an acceptable means of limiting the flow rate and hence the size of full retention systems.

** Enter 11 for Class 1 Full Retention Separators** Enter 12 for Class 2 Full Retention Separators

*Larger models up to CNSB1000 are available on request

CNS4-20S

222 CNS4/** 1810 CNS4s/** 2319 1010 1300 600 1075 1025333 CNS6/** 2650 CNS6s/** 3414 1010 1300 600 1075 1025444 CNS8/** 2489 CNS8s/** 3197 1210 1500 600 1275 1225556 CNS10/** 3073 CNS10s/** 3957 1210 1500 600 1275 1225833 CNS15/** 2995 CNS15s/** 3844 1510 1800 600 1550 15001111 CNS20/** 3929 CNS20s/** 5060 1510 1800 600 1550 15001667 CNS30/** 4190 CNS30s/** 5639 1880 2100 750 1850 18002222 CNS40/** 5487 CNS40s/** 7059 1880 2100 750 1850 18002778 CNS50/** 3778 CNS50s/** 4792 2600 2800 750 2550 25003333 CNS60/** 4450 CNS60s/** 5673 2600 2800 750 2550 25003889 CNS70/** 5123 CNS70s/** 6549 2600 2800 750 2550 25004444 CNS80/** 5795 CNS80s/** 7425 2600 2800 750 2550 25005000 CNS90/** 6467 CNS90s/** 8301 2600 2800 750 2550 25005556 CNS100/** 7139 CNS100s/** 9177 2600 2800 750 2550 2500

AREA TANK CODE LENGTH TANK CODE LENGTH BASE TO BASE TODRAINED EX SILT EX SILT INC SILT INC SILT DIAMETER HEIGHT ACCESS INLET INVERT OUTLET INVERTM2 mm mm mm mm mm mm mm



FORECOURT SEPARATORSFORECOURT SEPARATORSForecourt separators are full retention separators specified to retain on site the maximum spillage likely to occur on a petrol filling station. They are required for bothsafety and environmental reasons and will treat spillages occurring during the vehiclerefuelling and road tanker delivery. The size of the separator is increased in order toretain the possible loss of the contents of one compartment of a road tanker, whichmay be up to 7,600 litres

Full retention forecourt separators have been developed to comply with the EuropeanEN 858 specifically to retain a spillage from a 7600-litre road tanker compartment.Designed for installation in petrol forecourts and similar high risk refuelling areas, theseparator will intercept hydrocarbon pollutants and gross spillage and prevent theirentry into the drainage system.

WASH DOWN SEPARATORSEH Smith offer a wide range of one, two and three chamber separators specifically tobe installed into wash down areas such as car wash & heavy goods vehicle cleaning facilities that must be directly discharged into a foul drain, which will then receive secondary municipal treatment. Discharge to a surface water drainage system is notallowed. Silt separators can be used as an additional item.

** For Single Chamber Units Insert 12** For Double Chamber Units Insert 22** For Triple Chamber Units Insert 32

TANK CODE VOLUME LENGTH DIAMETER HEIGHT ACCESS BASE TO BASE TOLTRS DIA INLET INVERT OUTLET INVERT

ANO/11 10000 4250 1800 2100 750 1600 1550ANT/12 10000 4250 1800 2100 750 1600 1550LNO/11 10000 4250 1800 2100 750 1600 1550

CWS2/** 2000 1000 2713 600 1075 1025CWS3/** 3000 1200 2853 600 1275 1225CWS4/** 4000 1200 3737 600 1275 1225CWS6/** 6000 1500 3636 600 1550 1500CWS8/** 8000 1800 3443 600 1850 1800CWS10/** 10000 1800 4229 600 1850 1800CWS12/** 12000 1800 5015 600 1850 1800CWS14/** 14000 1800 5801 600 1850 1800CWS16/** 16000 1800 6587 600 1850 1800CWS18/** 18000 2500 4117 600 2550 2500CWS20/** 20000 2500 4524 600 2550 2500

TANK CODE CAPACITY LTRS DIAMETER LENGTH ACCESS DIA BASE TO BASE TOINLET INVERT OUTLET INVERT

Application Areas Car Washes, Heavy goods Vehicle washes, Car Valet Centres, Farm Machinery CleaningPoints, Construction / Plant Wash down Areas.



CLEREFLO ASP 6-20 PACKAGE SEWAGETREATMENT PLANTClereflo ASP has been specifically developed for residentialand commercial developments where mains drainage is notavailable; serving a population range from 6 to 20 persons.

Designed in accordance with BS6297 & EN12566-3, this highquality product is built to achieve the most stringent effluentquality standards required by controlling authorities.

The new Clereflo ASP provides each purposely-sized plantwith short and long-term benefits, easy installation and highperformance, simple maintenance with low ongoing runningcosts, providing excellent value for money.

Clereflo Unit ASP06 ASP12 ASP16 ASP20

Population Equivalent 6 12 16 20Hydraulic Load (l/day) 1200 2400 3200 4000Organic Load (g BOD5/per day) 360 720 960 1200O/A diameter (mm) A 2080 2080 2080 2080Standard Inlet Invert (mm) B 742 742 742 742Inlet Invert To Base (mm) C 1570 1870 1970 2070O/A Depth (mm) D 2350 2650 2750 2850Pipework Fitting (mm) 110 110 110 110Blower ratiing 80W 100W 135W 220WCover Size 750SQ 750SQ 750SQ 750SQPlant weight 210kg 250kg 275kg 300kg



CLEREFLO ASP 6-20 FINAL EFFLUENT PUMP STATIONSASP units are available with a pumped discharge option. Please refer to tables for further details.

Final Effluent Pump Stations without Control Panel

Final Effluent Pump Stations c/w Control Panel

Final Effluent Pump Stations are supplied without Manhole Covers and Frames*Top 1 specification: 3m head x 50m distance**Top 3 specification: 6m head x 100m distance

FEATURES & BENEFITS• Excellent value for money• Complete below ground installation• Easy to install• Proven technology with reliable performance• Quiet, odourless operation• Compact design with no moving parts• Typically 3-year de-sludging period• Deeper inverts available with standard extensions• Pumped discharge (options)• Discharge consent 20:30:20

PS-FE/S/Top1 Single 600 500 1480 1550PS-FE/S/Top3 Single 600 500 1480 1550PS-FE/D/Top1 Dual 600 500 1480 1550PS-FE/D/Top3 Dual 600 500 1480 1550

PS-FE/S/Top1/CP Single 600 500 1480 1550PS-FE/S/Top3/CP Single 600 500 1480 1550PS-FE/D/Top1/CP Dual 600 500 1480 1550PS-FE/D/Top3/CP Dual 600 500 1480 1550

TANK CODE PUMP DIAMETER BASE TO BASE TO BASE TOCONFIGURATION INLET INVERT OUTLET INVERT CABLE DUCT INVERT

mm mm mm mm

TANK CODE PUMP DIAMETER BASE TO BASE TO BASE TOCONFIGURATION INLET INVERT OUTLET INVERT CABLE DUCT INVERT

mm mm mm mm



OPTIONAL EXTRAS• Client specified Control Panel e.g. Form 4• Standby Blower• Client specified Control Kiosk• Extension Kit (for deeper inverts)• Sample chamber• Holding Down Straps

A B C D ENSAF25 1000 9500 1.8 160 4060 2625 1625 1500 1000NSAF30 1000 11400 1.8 160 4790 2625 1625 1500 1000NSAF35 1000 13000 1.8 160 5400 2625 1625 1500 1000NSAF40 1000 16800 1.8 160 6100 2625 1625 1500 1000NSAF50 1000 18300 1.8 160 7500 2625 1625 1500 1000

STANDARDINVERTDEPTH

CAPACITYLITRES

MAINDIAMETER

INLET / OUTLETPIPE DIA(MM)

LENGTH HEIGHT INLETINVERT TOBASE

OUTLETINVERT TOBASE

INLETINVERT

SAF SIZE

CLEREFLO N-SAF 25-50 PACKAGE SEWAGE TREATMENT PLANTThe Clereflo N-SAF 25-50pe range of package sewage treatment plant utilises provenSubmerged Aerated Filter (SAF) technology for optimum performance and dependability. With reliable, cost-effective and energy efficient blowers for aerationand an integral flow management system, the range is designed in accordance withBSEN12566-3:2005 and packaged for installation completely below ground.

Typical applications include: • small communities or housing developments • leisure facilities • golf courses• hotels• public houses• caravan sites • schools

FEATURES & BENEFITS • Proven SAF technology with reliable performance• Completely belowground installation• Low running cost air-blower• Easy to install – reduced costs• Quiet, odourless operation• Compact unitank design with no below ground moving parts• Deeper inverts available• Option for pumped influent or effluent• Effluent standard 20mg/l BOD; 30mg/lSS; 20mg/lNH3

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Pollution Control & Waste Water