Twin Screws Dewatering Press

Working Principle

The Twin Screws Spiral Dewatering Unit builds upon the overlapping spiral design, incorporating a unique external drive system. It features a cylindrical filtration assembly formed by interstacking fixed and movable rings, through which two parallel spiral shafts run.This innovative design allows the movable rings to operate without direct contact with the spiral shafts. wear-free operation with no vulnerable parts, maximizing sludge shearing, enhancing conveyance, reducing cake moisture content. It is a versatile, efficient, stable, energy-saving, intelligent, user-friendly, safe, and environmentally friendly solid-liquid separation solution.

Particular Application:

The Twin Screws Spiral Dewatering Unit is an advanced sludge treatment solution renowned for its superior performance in handling sticky, oily, or high-hardness sludge. Its technical advantages have led to widespread adoption across multiple industries. 

1. Mainly inorganic substances.

     The sludge is mainly composed of the sediment and algae debris in the raw water, as well as the hydroxides (such as aluminum hydroxide) formed by the coagulants (such as aluminum salts and iron salts) added during the purification process. The content of organic matter is relatively low.

2. High water content and poor dewaterability.

     Due to the strong hydrophilicity of the hydroxide, the sludge has good water retention properties and is difficult to be shaped, resulting in difficulties in concentration and dewatering.

3. Low-concentration sludge discharge characteristics

      The concentration of the sludge discharged is relatively low. For example, the solid content in the sludge discharged from the sedimentation tank is only 0.3% to 0.5%, which requires a large number of subsequent treatment facilities, thereby increasing investment and operation costs.

4. Wear and clogging risks

     The sand particles contained in the sludge can easily form a high-viscosity slurry, which is prone to clogging.

Model Selection