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How does centrifugal sludge dewatering machine treat the sludge?

Nov 02, 2017

Most people think that the sludge has no use, but in fact, as long as through the scientific and reasonable treatment, the sludge can be used. Sludge dewatering machine is responsible for dewatering and drying in the process of sludge treatment, and the centrifugal sludge dewatering machine is included.


The role of centrifugal sludge dewatering machine in the sewage treatment is to reduce the water content in sludge, and create conditions for subsequent treatment, utilization and transportation. At the same time, it can also eliminate the harmful toxic substances, which will pollute the environment, so that the sludge can be effectively recovered and utilized, and the value is improved.


From the structure, the centrifugal sludge dewatering machine is mainly composed of the transfer and the screw conveyor with hollow shaft. In the process of sewage  treatment, the sludge is sent to the rotary drum by the hollow shaft, and immediately dumped into the hub under the centrifugal force of high speed rotation.


Because of the large specific gravity of the sludge particles, the centrifugal force is also large. When it is placed in the centrifugal sludge dewatering machine to be attached to the inner wall of the hub will form a solid layer. However, because of the small density of water in the sludge, the centrifugal force is also small, only the liquid layer will be formed on the inside of the solid layer.


In this way, the sludge of the solid layer will be transported to the cone end of the transfer by the slow promotion of the screw conveyor of the centrifuge sludge dewatering machine, and continuously discharged from the outlet of the around transfer. And the liquid is discharged from the weir flow to the transfer, discharging from the dewatering machine after the collection.


From the whole work process, it can be seen that the most key part of the centrifugal sludge dewatering machine is its hub. The larger the diameter of the hub is, the greater the dewatering capacity will be. The longer the transfer length is, the higher the solid rate of sludge will be. However, the manufacturing and operation costs are quite high, so it is not economical. Therefore, it is necessary to  properly control the diameter of the drum of the centrifugal sludge dewatering machine.



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