Unlike drilling waste disposal systems, the separation of waste water requires a lower differential speed (pushing speed).
Why can’t the differential speed (pushing speed) be used in wastewater treatment?
1) Firstly, the differential speed (pushing speed) completely mixes the liquid and the solid; the whole mud centrifuge will work like a mixing mixer rather than an effective solid-liquid separation device.
2) Secondly, chemical agents are added to the waste water that is usually separated. High differential speed (pushing speed) will cause part of the drug to be lost in the liquid outlet.
3) In addition, if chemicals are added to the waste water before it enters the centrifuge, it will produce foam in the centrifuge.
Therefore, if your centrifuge has experienced the above problems, you may need to consider lowering the differential speed (pushing speed).
Mud centrifuge
For the GN solid control decanter centrifuges, the main drive motor is converted to stock through a differential drive centrifuge. Auxiliary motors directly drive the auger and differential with its operating speed is fixed.
Therefore, how can the differential speed of the centrifuge be reduced (pushing speed)?
1) First of all, because of the differential speed (pushing speed), the quantitative relationship between the auxiliary motor and the differential, the speed of the transfer can be reduced to reduce the differential speed (pushing speed). As the GN brand PLC intelligently controls the large-volume put-down centrifuges of frequency conversion cabinets, it can directly reduce the speed of stock conversion on the frequency conversion control cabinets. For a fixed speed centrifuge, the centrifuge pulley can be changed to reduce differential speed (pushing speed). It is the normal way that many professional mud service companies take because they are familiar with the operation and maintenance of centrifuges. The cost of fixed speed is lower. For new centrifuge users, PLC intelligent control of variable frequency centrifuges is a better choice.
2) Using PLC intelligently control the frequency conversion centrifuge, the operator can also reduce the speed of the screw pusher and reduce the differential speed (pushing speed) by reducing the speed of the auxiliary motor. The option to reduce the speed of the auxiliary motor is more effective in reducing the differential speed (pushing speed). In this case, the centrifuge can work better in waste water separation when operating at high speed and low differential speed (pushing speed). Performance of Decanter Centrifuge.
More question,please feel free to contact GN Solids Control