Frame-type disc filter with bypass water control for preventing bypass water from being used in backwashing

摘要

A frame-type disc filter (100) is provided with a bypass water collector (33) disposed adjacent an inlet to the disc filter. Influent water overflows the inlet into the bypass water collector. The filtrate is collected in a basin below the filter and is used to backwash the filter. A conduit is communicatively connected to the bypass water collector for directing the bypass water from the frame-type disc filter to an effluent channel that is independent of the frame-type disc filter. This arrangement prevents the bypass water from being used to backwash the filter.