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Working principle of sludge dewatering decanter centrifuge

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Working principle of sludge dewatering decanter centrifuge

The working principle of the sludge dewatering decanter centrifuge is: the drum and the screw rotate at a high speed in the same direction at a certain differential speed, and the material is continuously introduced into the inner cylinder of the conveying screw through the feeding pipe, and then enters the drum after being accelerated. Heavy solids are deposited on the drum wall to form a sediment layer. The conveying screw continuously pushes the deposited solid phase to the cone end of the rotating drum and discharges it out of the machine through the slag discharge port. The lighter liquid phase forms an inner liquid ring, which continuously overflows the drum from the overflow port at the large end of the drum, and is discharged out of the machine through the liquid discharge port.

This sludge dewatering decanter centrifuge can continuously feed, separate, wash and unload materials at full speed. It has the characteristics of compact structure, continuous operation, stable operation, strong adaptability, large production capacity and convenient maintenance. It is suitable for separating suspensions containing solids with a particle size greater than 0.005mm and a concentration range of 2-40%. Widely used in sludge dewatering, chemical, light industry, pharmaceutical, food, environmental protection and other industries.

In terms of environmental protection applications, the sludge dewatering decanter centrifuge mainly refers to the dewatering of the sludge produced in the process of industrial and civil sewage treatment. Today's environmental issues have become the focus of common concern all over the world. Under this background, the value of decanter centrifuges has been reflected. In the past, sewage plants or related treatment plants used self-sedimentation or belt filter presses to dehydrate and concentrate sludge. The test proves that the water content of sludge can be reduced from 98% to 80%, and its volume can be reduced by 10 times. Because of this, the decanter decanter centrifuge has the inherent characteristics of large processing capacity, automatic operation, and good dehydration effect. The protection field has been widely used and promoted. The single product sales of decanter centrifuges account for about half of all centrifuge products, which has established its irreplaceable position. In foreign countries, the first choice for sewage treatment equipment is the sludge dewatering decanter centrifuge.