Design

The ROMAG CSO screen RSU consists of a rugged frame made of stainless steel sections. The horizontal rake bars are braced in this frame. The cleaning carriage which is moved to and fro by a double-acting hydraulic cylinder is located on the upper side. Several comb rows of asymmetrical triangular shape move through between the rake bars. The water flowing through forces the caught material against the bars where it is moved on by the cleaning combs with their „steep end“ in longitudinal direction. The flow direction assists this movement. During return travel, the „flat end“ of the combs slides through beneath the caught material. The traverse paths and shapes of the combs are intermatched so that each cleaning comb transfers the caught material to the next cleaning comb. It is slid to the end of the rake and is then discharged with the outflowing effluent to the sewage treatment plant.
This prevents a problematic concentration of caught material at the inlet end.