With the continuous enhancement of national requirements and treatment efforts for environmental protection, the whole treatment requirements of wastewater treatment in the iron and steel industry should also be carried out in accordance with strict standards, and the sludge treatment stage is continuously strengthened. At present, sludge dewatering has become an important part of wastewater treatment in the iron and steel plant, which has become more and more important. The centrifugal sludge dehydrator can ensure that the waste gas does not overflow, the sewage does not flow out, the sludge does not land, the degree of automation is high, the number of vulnerable parts is small, the drug consumption is small, it is convenient for continuous operation, and the operation cost is low. The advantages of using the centrifugal sludge dehydrator to carry out the sludge dehydration are gradually emerging, and the use of the centrifugal sludge dehydrator is gradually on the rise Head.

The centrifugal sludge dehydrator, also known as the horizontal screw discharge settling centrifuge, relies on the density difference of solid-liquid two phases, under the action of centrifugal force field, to accelerate the settling speed of solid particles to achieve solid-liquid separation.

A cone section is designed in front of the drum, which rotates at a high speed according to different sewage properties and the set speed. Under the action of centrifugal force, the sludge entering the centrifuge first achieves the stratification effect on different circular interfaces due to the different density of solid phase and liquid phase; then, the solid phase is gradually pushed to the outlet of solid phase by the screw in the machine, and under the action of centrifugal force and the extrusion force of the two-way extrusion section at the end, achieves the dry effect, and is discharged from the outlet; the liquid phase is gradually stratified When it is stable and accumulates more and more, the clarified supernatant flows out through the overflow weir to the outlet of the liquid phase and out of the machine. The running speed of the drum directly determines the separation factors. Generally speaking, the rotating speed is high, the separation factor is large, and the moisture content in the solid is low. The speed difference of the screw directly affects the moisture content of the solid transferred outside the drum, which has a direct impact on the treatment capacity, residence time and solid discharge.