Return water treatment


The sludge dewatering centrate has a very high nitrogen concentration. With the return water treatment this load is being reduced in such way that the waste water can be treated in the biological stage.

SBR-processes are conventionally run with nitrification/denitrification or with partial nitrification and anaerobic ammonium oxidation (PNAA).


We adopt processes according to your project requirements and achieve optimal solutions using selected products from proven suppliers.

One of our partners for return water treatment:

Return water treatment


Feeding pump station


Return water treatment

Foam control

Blower station

Clear water removal