Apparatus for removing floating sludge from water surface, e.g. in clarification tank, having sludge outlet allowing controlled temporary increase of sludge outflow

摘要

Apparatus for removing floating sludge (FS) from the water surface in a water supply structure includes an outlet (1) for FS, controllable with regard to the amount of flowing FS removed, and an outlet controlling device (5) which temporarily increases the amount of flowing FS removed above a standard level.