Biosand filters

Biosand filters are used for purification of wastewater. Wastewater is pre-treated in precipitation tanks and then pumped to biosand filters. In biosand filters, wastewater is treated by being drained through filter material and naturally occurred microorganisms.

  • Biological sand filters consist of: Precipitation tank, pump part, Ø40 mm. manifold, drain pipe, outlet well, membrane 0.5 mm. thick and Ø110 mm. membrane bushing.

Wastewater can after purification be led to streams, ditches, drainages, etc.

Tunetanken biosand filters meet the requirements of SOP (increased requirement for reduction of organic material as well as nitrification and reduction of phosphorous), SO (increased requirement for reduction of organic material), OP (reduction of organic material and reduction of phosphorous) and O (reduction of organic material) purification classes.

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  • Precipitation tank.
  • Pump part.
  • Ø40 mm. manifold.
  • Drain pipe.
  • Outlet well.
  • Membrane 0.5 mm.
  • Ø 110 mm. membrane bushing.
  • Meet the requirements for all purification classes – SOP, SO, OP, and O.
  • The wastewater’s organic materials and nutrients are metabolized.
  • After purification the wastewater can be led into streams, ditches, drainages, etc.


TypesDistribution pipePurification classPE membraneMaterial
5 PE KGV2 x 16 mSOP96 m²Composite
10 PE KGV4 x 16 mSOP192 m²Composite
15 PE KGV6 x 16 mSOP384 m²Composite
20 PE KGV8 x 16 mSOP768 m²Composite
25 PE KGV10 x 16 mSOP1536 m²Composite
30 PE KGV12 x 16 mSOP3072 m²Composite

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