Wastewater impeller combines efficiency and reliability
In a further expansion of its range of pumps suitable for handling untreated wastewater, this company has developed a new radial multi-vane impeller with an open design. The D-max impeller (photo) handles fluids containing solid substances, long fibers and coarse solids, as well as entrapped gas or air. It is therefore very suitable for handling untreated waste water, combined sewage, recirculated and heating sludge, as well as activated, raw and digested sludge with a solids content of up to 8%. This impeller type is also suitable for transporting fluids with a high viscosity. At approximately 84%, the new impeller’s best efficiency can be compared with the performance of closed multi-channel impellers, the company says. The D-max impellers are used in the Sewatec and Amarex KRT pump type series. The maximum head is approximately 90 m and the maximum flowrate is approximately 2,800 m3/h. — KSB SE & Co. KGaA, Frankenthal, Germany