Depends on the density and viscosity of the fluids to be treated, to make the solids liquids separation easily, for the fluids which is difficult to separate, normally we need to enlarge the solids particle size, reduce fluids viscosity and increase solids liquids density difference by methods of mechanical and chemical ways. Besides, we can also apply to increase concentration, preconcentration and wear resistant accordingly to improve the centrifuge treating capability and reduce the abrasion to the centrifuge screw.
The solution to enlarge the suspended particles by mechanical or chemical methods including:
- Inorganic electrolyte is added to the suspension fluids as a coagulant to agglomerate small particles into large particles.
- Mixing with flocculants or coagulants, the order of adding various flocculants, and the intensity and time of mixing have an impact on the flocculation effect. Therefore, the type and dosage of flocculants need to be determined by the mixing test. The requirement of Flocculation treatment effect is that the settling speed of flocculated fluids is fast, and the clarity of top layer clear liquid is good.
- Change the viscosity and density of the fluids by adjusting temperature
Especially for the oil sludge treatment by decanter centrifuge, heating the oil sludge and mixing with proper chemicals to reduce the viscosity will increase the solids liquid separation efficiency.
A dewatering centrifuge package including one unit of dewatering centrifuge, centrifuge feeding pump, fluids catching tank with pipelines and tank accessories, chemical dosing unit.
GN dewatering centrifuges can be used for treatment of oil sludge, drilling mud, construction slurry, industrial waste water and other kinds of solids liquid separation. The centrifuge models including 14 inch bowl centrifuge, 18 inch bowl centrifuge, 22 inch bowl centrifuge and 30 inch bowl centrifuge. If you need a dewatering centrifuge package, pls contact with GN solids control.