Drum screen Geiger®

for wastewater treatment

High-Capacity Drum Screens The Geiger® large rotating Drum Screens are typically installed in cooling water intake systems downstream from trash rakes or coarse bar screens. Debris is removed by efficient filtration at Geiger High-Capacity Drum Screens upstream of circulating water pumps. In this way the filtrated water distributed to a plant’s downstream system (heat exchangers, membranes) is freed from particles larger than the mesh size of the drum screening machines, similar to traveling water Screens. Geiger® High-Capacity Drum screening machines are designed to efficiently filter/screen raw water at intakes as well as waste water while massively reducing maintenance procedures (low lifecycle costs). The In-to-Out flow pattern with double-entry from both sides ensures low hydraulic losses. Static and dynamic forces always act vertically (no buoyancy). Loads are vertical and absorbed by the civil structure. Debris accumulated at the inside of the drum cannot drop onto the channel bottom, which would be difficult to access (such as in the case of out-to-inflow patterns). The debris being accumulated at the drums screen filters is being washed off by spray water nozzles following the gravity flow at the upper level during the drum screens rotation. The drum screens rotation is being triggered automatically when debris starts to accumulate at the inside of the drum.