With the new generation of sludgeforce decanters, the energy consumption has been reduced to 0.7 kWh/m3 compared to 1.3–1.5 kWh/m3 required by conventional decanters. This achievement has been made possible by design changes, such as constructing the machine for extreme pond depth — the ratio of the diameter of the solids discharge to the internal diameter of the bowl. The sludgeforce has a pond depth of less than 0.5 compared to 0.6 for conventional units. Besides reduced energy consumption, the flocculant requirement is also cut by up to 2 kg/m3 — a 25% savings in operational costs for polymer consumption, says the manufacturer. The new decanter line covers the ranges from 1 to 200 m3/h. — GEA Westfalia Separator Group, Oelde, Germany
Energy-saving decanters for dewatering of sludge
| By Chemical Engineering