Effluent from the dairy shed and yard gravitates in to a rectangular sump. When effluent in the sump reaches a pre-determined level the float switch initiates the agitator, then the sludge pump. The sludge pump transfers mixed-raw effluent from the end of yard sump to the Screw Press Separator (SPS). The SPS is elevated on a platform.
Separated liquid effluent gravitates into an open storage tank, whilst solids fall below the SPS. Solids are removed and spread using a belt spreader every 2 - 3 months. Liquid effluent is stored in an open tank and recycled for hydrant yard washing.
This equates to an annual freshwater saving of approximately 14, 600 kL (14 6 ML) Surplus liquid effluent is
irrigated via a WiIliams travelling irrigator.