Biosep ™

Technical details

Thanks to its tried and tested design, Biosep™ offers a highly compact water treatment solution, enabling the treatment to be carried out using high concentrations of biomass (8 to 15 g SS/l).

Operating principle

Biosep™ uses an aeration tank and a membrane system where membranes are located and grouped into modules. These modules may be directly immersed in the aerated tank or in a separate basin.

  • After pre-treatment (e.g. screening), raw water flows into the aerated biological tank where carbon, nitrogen and phosphorus-containing pollution is removed.

  • Membrane filtration then separates the purified water from the activated sludge: the treated water is drawn off using a low-pressure pump. The sludge retained by the membrane create a sludge cake outsite the membrane surface. The excess sludge is directly removed from the biological tank for dewatering.

  • Maintaining filtration performance is the key point to the process; this is based on different automated functions : backwash, air injection and chemical cleaning.

An optimized and simplified treatment line

By replacing the conventional clarification stage, membrane separation does away with the limitations surrounding sludge settling. As a result, the treatment line is greatly simplified and the treatment performance optimized.

Compact treatment line

Conventional activated sludge versus Biosep™