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The adjustment of the separation factor of the sludge dewatering machine is based on Stoke's law
- 2020-05-13-

The adjustment of the separation factor of the sludge dewatering machine is based on Stoke's law


Vg=d2(ρp-ρ1)g/(18η)


Vg-gravity sedimentation velocity, m/s;


d- solid particle diameter, m;


ρp-solid particle density, kg/m3;


ρ1- liquid phase density, kg/m3;


η-liquid phase viscosity, kg/ms;


g-acceleration of gravity, 9.81m/s2;


From the above formula, the centrifugal sedimentation formula can be obtained:


Vc=d2(ρp-ρ1)rω2/(18η)


Vc—centrifugal sedimentation velocity, r-centrifugal radius, ω-angular velocity, ω=2πN/60, N—r/min


According to the formula, it can be known that only the radius r and angular velocity ω of the centrifuge reach a certain value. In the limited space of the centrifuge, a satisfactory settling effect can be obtained in the shortest possible time. Therefore, it is hoped that a better sludge treatment effect can be obtained. The high-speed rotation of the centrifuge is inevitable.


The separation factor represents the strength of the centrifugal force field, which is controlled by adjusting the speed of the centrifuge. Increasing the separation factor improves the production capacity and separation effect, but also increases the power consumption and the wear of the drum and spiral. The production capacity and separation requirements should be met under a lower separation factor. For this data, please refer to the equipment description and actual The operating status is determined, and the control of the centrifuge speed should be based on the realization of the normal and stable operation of the equipment and the normal sludge dehydration treatment effect.