All Five Filter Intelligent Septic Tanks are designed to meet a minimum effluent quality of BOD 20mg and TSS 30 mg/litre the units have been tested to this standard and hold EN12566-1:2005 certification:

 

e.g. achieve removal efficiencies of:

BOD > 93% (based on 300mg/l influent

SS > 88% (based on 250mg/l influent

The unit offers five separate individual filtration and treatment processes.

Marsh Industries supply Sewage Treatment Products to many UK Local Authorities, British Waterways, The Environment Agency and major UK Sewage Contractors & Builders Merchants.

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All Design drawings are available in PDF & Auto Cad format.

A Free Of Charge Design Service Is Offered.

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Construction Of The Tank GRP = Design life fifty years, guaranteed for twenty five years*

Diffuser/s Guaranteed for five years

Compressor Guaranteed for two years

Media Bed Guaranteed for ten years

Pumps if applicable two year guarantee.

Design Criteria for calculations:

 

Hydraulic flow 180 litres per person/24hrs

BOD 60grams/l per person/24hrs

Media Surface Calculations area based upon influent

into plant 300mg/l and BOD 20mg/l on outflow.

The unit has been tested for water tightness,

hydraulic flow, structural performance

and assessed for final effluent quality.