WHAT SIZE SEWAGE TREATMENT PLANT DO I NEED?

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Sizing and Regulations

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 loading’s on the guide, set out the suitable sizes of treatment plants for different types of property.

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).

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.

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.

View our Bio-Pure (E Range) Domestic Sewage Treatment Plants

Price £2,754.00 inc VAT
Product ID Bio1-5
Air Pump 60ltr
No. of Persons 1-5
Max Average Daily Flow 750ltr
Max BOD/day 300g
In Ground Depth 2.25m
Outside Diameter 1.85m
Inlet Invert 570mm
Outlet Invert 670mm
Weight Empty 125kgs
Total Capacity 2270ltr
Power Consumption for E Range 27w
Price £2,940.00 inc VAT
Product ID Bio1-7
Air Pump 80ltr
No. of Persons 1-7
Max Average Daily Flow 1050ltr
Max BOD/day 420g
In Ground Depth 2.25m
Outside Diameter 1.85m
Inlet Invert 570mm
Outlet Invert 670mm
Weight Empty 125kgs
Total Capacity 2270ltr
Power Consumption for E Range 42w
Price £3,696.00 inc VAT
Product ID Bio5-13
Air Pump 100ltr
No. of Persons 5-13
Max Average Daily Flow 1800ltr
Max BOD/day 780g
In Ground Depth 2.44m
Outside Diameter 2.10m
Inlet Invert 700mm
Outlet Invert 680mm
Weight Empty 200kgs
Total Capacity 3000ltr
Power Consumption for E Range 65w
Price £4,710.00 inc VAT
Product ID Bio10-16
Air Pump 150ltr
No. of Persons 10-16
Max Average Daily Flow 750ltr
Max BOD/day 300g
In Ground Depth 2.74m
Outside Diameter 2.10m
Inlet Invert 700mm
Outlet Invert 800mm
Weight Empty 230kgs
Total Capacity 3975ltr
Power Consumption for E Range 84w
Price £5,040.00 inc VAT
Product ID Bio14-22
Air Pump 200ltr
No. of Persons 14-22
Max Average Daily Flow 3300ltr
Max BOD/day 1320g
In Ground Depth 2.74m
Outside Diameter 2.10m
Inlet Invert 700mm
Outlet Invert 800mm
Weight Empty 230kgs
Total Capacity 3975ltr
Power Consumption for E Range 130w
Price £6,840.00 inc VAT
Product ID Bio20-27
Air Pump 200ltr
No. of Persons 20-27
Max Average Daily Flow 4050ltr
Max BOD/day 1620g
In Ground Depth 2.98m
Outside Diameter 2.55m
Inlet Invert 820mm
Outlet Invert 920mm
Weight Empty 350kgs
Total Capacity 5610ltr
Power Consumption for E Range 130w
Price £7,710.00 inc VAT
Product ID Bio25-32
Air Pump 250ltr
No. of Persons 25-32
Max Average Daily Flow 4800ltr
Max BOD/day 1820g
In Ground Depth 2.98m
Outside Diameter 2.55m
Inlet Invert 820mm
Outlet Invert 920mm
Weight Empty 350kgs
Total Capacity 6000ltr
Power Consumption for E Range 210w
Price £9,648.00 inc VAT
Product ID Bio30-36
Air Pump 200ltr & 150ltr
No. of Persons 30-36
Max Average Daily Flow 5400ltr
Max BOD/day 2160g
In Ground Depth 2 x 2.74m
Outside Diameter 2 x 2.10m
Inlet Invert 700mm
Outlet Invert 800mm
Weight Empty 460kgs
Total Capacity 7950ltr
Power Consumption for E Range 230w
Price £10,560.00 inc VAT
Product ID Bio35-42
Air Pump 200ltr & 200ltr
No. of Persons 35-42/td>
Max Average Daily Flow 6000ltr
Max BOD/day 2520g
In Ground Depth 2 x 2.74m
Outside Diameter 2 x 2.10m
Inlet Invert 700mm
Outlet Invert 800mm
Weight Empty 460kgs
Total Capacity 7950ltr
Power Consumption for E Range 280w
Price £12,960.00 inc VAT
Product ID Bio40-55
Air Pump 200ltr & 200ltr
No. of Persons 40-55
Max Average Daily Flow 8250ltr
Max BOD/day 3300g
In Ground Depth 2 x 2.98m
Outside Diameter 2 x 2.55m
Inlet Invert 820mm
Outlet Invert 1020mm
Weight Empty 800kgs
Total Capacity 11220ltr
Power Consumption for E Range 280w

*All Bio-Pure Sewage Treatment Plants are now fitted with an alarm as standard*

Discharge Level

Biological oxygen demand (BOD) 20 mg/l
Suspended solids 30 mg/l
Ammonia (NH3) 20 mg/l

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