In order to work out which Domestic Sewage Treatment Plant is suitable for your property, you must abide by the British Water flows and loads guide (4). The table of the loading’s on the guide, set out the suitable sizes of treatment plants for different types of property.
Domestic Dwelling Calculation
A domestic dwelling is fairly straightforward to work out. This is usually the number of bedrooms in the property plus two.
For example, a three-bedroom house becomes five (requiring a Bio-Pure 1 Domestic Sewage Treatment Plant).
Multiple Domestic Dwelling Calculation
However, if the Sewage Treatment Plant is required for more than one property, then two must be added for each dwelling.
For example
a two-bedroom house plus two = four
a three-bedroom house plus two = five,
and a four-bedroom house plus two = six,
Add them all together = fifteen (4+5+6=15). This will require a Bio-Pure 4 Sewage Treatment System.
Non-Residential Property
For a non- residential property, the size of the Bio-Pure required will depend on the purpose of the property. Please contact us and we will be able to work out the correct size Bio-Pure required for your needs.
If you are unsure please contact us and we will be than happy to answer any questions you may have.
What design of wastewater soakaways are legal in the UK?
Under the Environment Agency General Binding Rules, soakaway CRATES and TUNNELS cannot be used for sewage treatment plant and septic system soakaways as they do not conform to the Building Regulations or the BS 6297 2007 for foul water soakaway construction.The E.A. have stated that only methods and materials described in these regulations can be used. Crates and tunnels can only be used for rainwater soakaways.
Our specialist design work and advice is FREE, accurate, up to date and ALWAYS complies with British Standards, E.A. Pollution Prevention Guidelines and the current Building Regulations. We will always strive to find the most suitable product for your site. Please see our company profile.
We pride ourselves on being experts in sewage treatment, not expert salesmen. If a septic tank is not the right solution for the job, you will have to buy it elsewhere, as we will only supply systems that are Legal and that will Work.
Have a look around our site. If you can't find what you are looking for give us a call. We are only too pleased to help you with your sewage or septic tank problems. You may also find useful websites on our resources page.
Sewage Treatment Plant and Septic System Advice
Our experts are here to help you with any sewage or drainage issue you may have. We give honest, independent, impartial advice on all types of wastewater plant, septic tanks and Installation. We can organise a free septic tank survey of your site and can also calculate a soakaway design to the current British Standard (BS 6297 2008) for it, throughout the UK.
Which Sewage Treatment Plants, Septic Tanks and Soakaways are LEGAL?
There are two categories of sewage treatment equipment - ones that claim to meet the standards required by the Authorities and those that have been tested for 38 weeks by the EN testing centres and proved to treat waste water to a certain standard, giving a quality of effluent most suited to the site and customer requirements. Only sewage treatment plants with the EN 12566-3 Certificate and septic tanks with the EN12566-1 are accepted by the Environment Agency under the General Binding Rules. Anything else requires a Permit from the E.A BEFORE installation, which may or may not be given.
The EN12566-3 test costs around £40,000 per model.
Many of the former tanks are simply sold on price, have insufficient volume to comply with the British Standard, blow insufficient air as small compressors are much cheaper, have never been independently tested by anyone and do not have the essential EN 12566 Certificate.
The British Standards Institute has informed us that the EN 12566-3 2005 is the ONLY British Standard in place, although it could be a lot better than it is. See 'Why the EN 12566 is a bad test'. Many manufacturers, dealers and installers simply hope that the customer is either ignorant of the current EN 12566-3 British Standard, or they declare that the sewage treatment unit or septic tank conversion is 'designed' to or 'complies' with EN 12566-3 or the completely outdated BS6297 1983.
To make sure that the EN 12566-3 2005 Certificate is genuine, ask for the full EN Test Report from the manufacturer. If the manufacturer will not email the Report, don't buy the plant.
