A brief introduction, sludge dehydrator
　Sewage after precipitation treatment can produce a large number of sludge, even after enrichment and digestion treatment, moisture content is still as high as 96%, the volume is very big, difficult to XiaoNa disposal, must pass dehydration processing, improve the mud cake containing solid rate, in order to reduce sludge dumps area.
Second, the sludge dehydrator classification
　General large and medium-sized sewage treatment plant adopts mechanical dehydration. There are many kinds of dryer, according to the principle of dehydration can be divided into vacuum filtration dehydration, pressure filtration dehydration and centrifugal dewatering three categories.
1. The belt type filter sludge dehydrator
　Belt type filter machine is by fluctuation two tension filter belt carry secretly is worn sludge layer, from a series of regular arrangement of roll pressure cylinder is S shape after, rely on the filter belt tension is the formation of sludge layer press and shear force, the sludge layer of capillary water squeeze out, get solid containing a high percentage of mud cake, so as to realize sludge dewatering.
2. Centrifugal sludge dehydrator
　Centrifugal dehydrator mainly by transfer and with hollow shaft of the screw conveyor composition, sludge by hollow shaft into the drum, the centrifugal force produced by the rotation at high speed under the action of, immediately be left people turn hub cavity. Sludge particles larger proportion, making centrifugal force is bigger also, be left stick on the wall in turn hub, forming a solid layer; Water density is small, the centrifugal force is small, only in solid layer inside produce liquid layer. Solid layer of sludge in the screw conveyor of slow promotion, is transferred to the transfer, the transfer of the cone end around the export continuous discharge, liquid the weir four overflow row to transfer from the back out of the dryer.
3. Plate and frame filter sludge dehydrator
　Plate and frame filter press is through the plate and frame of the extrusion, make the sludge in the water through the filter cloth discharge to dehydration purpose. It mainly consists of concave people type filter plate, frame, automatic - pneumatic loop system test plate suspension system, filter plate vibration system, air compressor unit, filter cloth high pressure washing device and the side of the fuselage photoelectric protection constitute.
Three, sludge dehydrator features:
　1. Sludge dehydrator automatic operation, the human most save, maintain management easy.
　2. Good mechanical performance is excellent durability, covers an area of province.
　3. It is applicable for various sludge dewatering sludge dehydrator, high efficiency, large in capacity.
　4. Multiple dehydration, dehydration ability, sludge cake moisture content is low.
　5. Sludge dehydrator save energy, power consumption, less speed, no vibration noise.
　6. Belt type filter cloth continuous operation, automatic washing, easy to operate.
　7. Sludge dehydrator filter cloth biker automatic correction, smooth operation.
　8. Filter cloth by outfit, for easy, simple maintenance.
　9. Sludge dehydrator agent added quantity is little, the operation cost is low, the price is reasonable.
Sludge dryers technical parameters: