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      Environmental protection of horizontal screw centrifuges and adjustment standard of liquid

      Time:2021-06-18 06:26:28  Clicks:75

      Environmental protection of horizontal screw centrifuges and adjustment standard of liquid phase clarity
      In the aspect of environmental protection, horizontal screw centrifuges are the key to carry out sludge dewatering in the whole process of industrial production and civil wastewater treatment. In the past, sewage treatment plants or relevant treatment stations used self foundation settlement or sludge filter press to carry out sludge dewatering and thickening. The experimental results show that the water content of sludge can be reduced from 98% to 80%, and its volume can be reduced by 10 times, Because of its inborn characteristics of large output, practical operation of automation technology and excellent dehydration effect, horizontal screw centrifuge has been widely used and promoted in the ecological environment protection industry.
      Horizontal screw centrifuge

      1.On the one hand, it is the reasonable centripetal force acting on the liquid phase in the settlement area of the drum foundation; On the other hand, it is the mean waiting time of liquid phase in the drum foundation settlement area. Similarly, there are two factors to determine the moisture content of solid phase after dewatering by centrifugal dehydrator, which are the reasonable centripetal force acting on the solid phase in the drum dewatering area and the mean waiting time of solid phase in the drum dewatering area.
      2.According to the operation of the horizontal screw centrifuge, the above factors can be controlled in a certain range to get a good separation effect. Generally, the drum speed ratio range is set for the separated raw materials, and then the differential speed ratio and overflow plate are adjusted according to the separation condition of the centrifugal dehydrator to get a good separation effect.
      3.In general, the regulation of differential speed ratio and overflow plate has the following regularity with liquid phase clarity and solid phase humidity: smaller differential speed ratio will reduce solid phase moisture content, but liquid phase clarity will decrease. Larger differential speed ratio will greatly improve liquid phase clarification, but solid phase moisture content will increase. Overflow plate with smaller inner diameter will greatly improve liquid phase clarification, But the moisture content of solid phase will increase. The overflow plate with large inner diameter will reduce the moisture content of solid phase, but the clarity of liquid phase will decrease.


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