The KSB pumps are employed as main pumps in two new pumping stations run by Emschergenossenschaft in Bottrop and Gelsenkirchen.
Specially modified pumps from the Sewatec range were delivered for this project. The biggest pump sets each have a drive rating of 470 kW and handle up to 6480 cubic metres per hour. A special technical feature of the pumps is their casing design.
Unlike Sewatec’s standard casing, the casings for the Emscher pumps were designed with tangential discharge nozzles by KSB engineers to achieve even better efficiencies. The impellers were also optimised to ensure high efficiencies without compromising on the operating reliability. The efficiencies the pumps achieved on the test facility exceeded the values established via the CFD (computational fluid dynamics) simulation.
The KSB factory in Halle/Saale produced all of the pump sets for this major project, including two huge pumps in close-coupled design specially manufactured for the Gelsenkirchen pumping station.
The pumping stations in Bottrop and Gelsenkirchen are used to lift the wastewater from the eastern Emscher valley to sewer sections located at a higher level. From there the water flows to the waste water treatment plants operated by Emschergenossenschaft.
The 51 km Emscher canal collects the wastewater produced by more than 1.8 million people and effluent discharged by industrial plants and commercial businesses in the area. The canal transports the wastewater to the treatment plant in Bottrop and to the Emschermündung wastewater treatment plant in Dinslaken.