Chinese Factory Price Screw Press Sludge Dewatering System for Waste Water Treatment
screw press sludge dewatering system S crew press Sludge Dewatering Equipment is our main product. It is a new kind of volute multi-disc hydraulic sol id-liquid separation machine in wastewater treatment , adopting multi-disk structure. Low rotation speed, energy-saving, non-clogging design, easy to operate, all these advantages make this dewatering press more and more popular around the world. And it can work 24h automatically, it saves labor cost. Compact and smart design saves the construction cost. Easy to maintain saves your maintenance cost. Screw press can be used for sludge thickening and dewatering ,it is is usually used for sludge treatment after biological process and thickening prior to storage, digestion and further dewatering. In WWTP, sludge concentration is about 0.2%-2%. After thickening, the solid content reaches 5% to 9%. Thus stable thickened sludge is provided for further dewatering equipment such as frame press and other machines. Also the dewatering efficiency and capacity are improved. Work principle : 1. The main body of the dehydrator is composed of a fixed ring and a movable ring screw on top of each other, with a screw l shaft running through it to form a filtration device. The front section is the concentration section, and the rear section is the dehydration section. 2. The filter gap formed between the fixed ring and the movable ring, as well as the pitch of the spiral shaft, gradually decreases from the concentration section to the dehydration section. The rotation of the 3 spiral shafts not only pushes the sludge from the concentration section to the dehydration section, but also continuously drives the traveling ring to clean the filter gap and prevent blockage. After gravity concentration in the concentration section, the sludge is transported to the dehydration section. As it advances, it gradually decreases with the filter gap and pitch, and under the blocking effect of the back pressure plate, generates great internal pressure, continuously reducing its volume to achieve full dehydration As screw press starts running, sludge flows into the filter cylinder and moves forward to sludge cake outlet under the thrust from screwshaft. The whole filter cylinder is composed of fixed rings, moving rings ans shaft. The first two sections are thickening zone, last two are dewatering zone, The space between screw blades gets more and