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Greywater Filters

BioBox Greywater Filter - 400 Litres / Day

Greywater filter

Price: £906 inc. VAT | €985 inc. VAT    

985 inc. VATBUY NOW

BioBox greywater filter is a non-insulated small purification plant for treating domestic greywater. The BioBox greywater filter cleans the water from the washing machine, kitchen sink, showers etc. Greywater flows passively through a series of filters. The filter pieces can be removed for cleaning and reused, so the running costs are very low. Purification is based on mechanical filtration and aerobic microbial activity that takes place in the filter element. Debris from the filters can be composted or disposed. BioBox greywater filter does not use any electricity. Wastewater from a toilet must be not be included.

BioBox Greywater Filter Summary:


  • Purifier for all greywater leaving the house
  • Capacity – 400 litres a day (about 5 persons)
  • Max treatment flow 50 litres / hour – then bypass
  • 150mm height difference between inlet and outlet
  • 3 filter element types included: coarse, medium & fine
  • Removes 90% BOD, P 85%, N40%
  • Filter elements should last 10 years approx
  • Can be installed below ground up to the level of the cover
  • Not insulated -freezing does not damage the unit, just ineffective while frozen
  • Download BioBox Greywater Drawing
  • Download BioBox Greywater Manual 400 Litre Day
  • BioBox CE Mark
  • Must install a vent in the pipe to aerate the filter (soil stack)

Measurements BioBox Drawings
Module dimensions (width x depth x height) 600 x 600 x 630 mm
two modules installed in parallel (width) 1200 mm
fittings Ø 75 mm drain pipes
inlet and the outlet height 150 mm (drop height)
capacity 400 liters / day / module
weight 17 kg
Pipe slopes in and out 2-3 degrees

    Is the toilet going to be used all year round? YesNo

    Do you have AC power? YesNo

    Is your property single story? YesNo

    Is there space below floor for a composter? YesNo

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