Klärbecken

摘要

A settlement tank with an inlet for the sludge to be treated, a pure water extractor for the treated water, a bottom sludge extractor for the sludge settling on the bottom of the tank and a floating sludge extractor for the sludge floating on the surface of the water, having a channel with an overflow edge extending parallel to the surface of the water, a setting device for adjusting the overflow edge in relation to the surface of the water and a shifting device for moving the channel in parallel to the surface of the water, in which there is a sensor for the water surface level which is connected to a control device which controls the setting device in such a way that the overflow edge is set at a given distance from the detected water level.