The feed pump conveys the inlet substrate into the Bioselect. Here, the solid phase is separated from the liquid phase. The auger transports the solid phase to the thick matter pump.

The liquid phase pump conveys the liquid phase to where it is used next. By varying the flow rate of the pumps, the dry solids content (DS content) in the thick phase can be adjusted. The solid phase can still be pumped and is conveyed to the requested storage location by the thick matter pump.