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Greywater Filters

BioBox Greywater Filter XL - 600 Litres / Day


Price: £1,605 inc. VAT | €1,745 inc. VAT    

1,745 inc. VATBUY NOW

The BioBox greywater filter Xl is a larger version of the BioBox unit that is suitable for larger applications. The BioBox XL is a non insulated small purification plant for treating greywater in a large domestic setting or in a commercial application. Greywater flows through a series of filters. The filter pieces can be removed for cleaning and reused for about 10 years. Purification is based on mechanical filtration and the aerobic microbial activity that takes place in the filter element. Debris from the filters can be composted or disposed. Wastewater from a toilet must be not be included.

BioBox Greywater Filter XL Summary:


  • Purifier for all greywater leaving the house
  • Capacity – 600 litres a day (about 7 persons)
  • Max treatment flow 75 litres / hour  – then bypass (BioBox XL + is 125 litres / hour)
  • 330mm height difference between inlet and outlet
  • 3 filter element types included: coarse, medium & fine
  • Removes 90% BOD, 85% P, 40% N
  • 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
  • BioBox CE Mark
  • Must install a vent in the pipe to aerate the filter (soil stack)

Measurements BioBox XL Drawing
Module dimensions (width x depth x height) 720 x 820 x 750 mm
two modules installed in parallel (width) 1500 mm
fittings Ø 75 mm drain pipes
inlet and the outlet height 330 mm (drop height)
capacity 600 liters / day / module
weight 23 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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