New Energy-Saving Dewatering Machine Pressure-Filtration and Compaction-Dewatering
The rotary pressure dewatering machine demonstrates high dewatering performance. In the rotary pressure dewatering machine, a filtration chamber (channel) consisting of two metallic disk filters rotates at a low speed of 0.2 to 1.3 rpm. The sludge conditioned by the polymer coagulant is continuously fed into the filtration chamber by the sludge injection pump under a pressure of up to 100 kPa (approx. 1 kg/cm2) for initial filtration. The sludge loses its fluidity as it moves from the filtration zone to the squeezing and dehydration zone. It is extruded to the outlet by the rotary force of the metallic disk filters. On the other hand, the inside pressure of the filtration chamber is maintained at up to 600 kPa (approx. 6 kg/cm2) at the outlet by the back pressure valve supported by the air spring, and the sludge is squeezed and dewatered.