How to Choose a Suitable Screw Press?

As star equipment in the field of solid-liquid separation, Screw Press Type Solid Liquid Separator and Sludge Dewatering Press often make people fall into a difficult choice. In fact, although they have the same goal - dehydration and reduction, the adaptation scenarios are very different.The following are the working principles and main classifications of filter presses.

Core principle: simple extrusion vs. precise progressive.

Screw Press Type Solid Liquid Separator: The core lies in applying high-intensity and direct mechanical pressure to the material. The material is fed into the pressing chamber or between the filter belts, and the water is quickly squeezed out by the strong rotation of the screw shaft or the tension of the filter belt. The process is simple and rough, and the force is concentrated.
Sludge Dewatering Press: The core is the clever combination of dynamic and static stacking rings and the spiral shaft running through it. Driven by the spiral shaft, the material moves gradually from wide to narrow in the gap formed by the dynamic and static rings. As the gap gradually narrows, the extrusion force on the material continues to increase steadily, achieving gentle and thorough dehydration, and the whole process is continuous and smooth.

Who is more suitable? Look at the material characteristics.

Screw Press Type Solid Liquid Separator: Suitable for materials with high fiber content, good toughness and low stickiness, such as fruit residue, vegetable residue, kitchen waste, Chinese medicine residue, etc. These materials can withstand high pressure and are not easy to clog the equipment. Suitable for scenes with medium requirements for mud cake or extremely high processing volume.
Sludge Dewatering Press: Suitable for oily, viscous and easy-flowing sludge, such as municipal sewage plant sludge, petrochemical oily sludge, papermaking sludge, food processing sludge, etc. Its progressive design can effectively deal with sticky materials and is not easy to clog.

How to choose depends on demand.

Choose a Screw Press Type Solid Liquid Separator if: mainly handles fiber waste residues such as fruits and vegetables, kitchen waste, etc., pursues large processing volume, has medium requirements for mud cake, and hopes to have a more refined budget.
Choose a Sludge Dewatering Press if: facing town or industrial sludge, has high requirements for mud cake, requires 24-hour continuous operation and low manual intervention.

Screw Press Type Solid Liquid Separator and Sludge Dewatering Press have their own strengths and no absolute advantage. The Screw Press Type Solid Liquid Separator is a reliable force for processing tough fiber waste, and the Sludge Dewatering Press is a precise choice for conquering sticky sludge and pursuing the ultimate dryness and automatic operation. Only by recognizing the material characteristics and clarifying the process goals can we accurately match and solve the problem of solid-liquid separation.

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Nina

Email: nina@filtrationchina.com

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