Sludge Dewatering Machine, Screens and Fine Screens, Traveling Slag Scraper were Delivered to Philippines

Mainstream Types and Working Principles of screw press dewatering

Stacked screw press machine

Principle: The sludge is moved through the gap between the dynamic and static rings by a spiral shaft, and is dehydrated by the dual effects of gravity concentration and mechanical extrusion. The relative motion between the moving ring and the stationary ring achieves self-cleaning, solving the problem of blockage in traditional equipment.

Characteristics of the screw press sludge dewatering machine

Low energy consumption (main motor power ≤ 1.1kWh), with an annual power saving of over 50000 kWh per unit.

Water saving (no need for high-pressure flushing, saving over 13000 tons of water annually).

Can handle oily or viscous sludge, suitable for industries such as municipal wastewater, food processing, and papermaking.

Belt type sludge dewatering machine

Principle: After being treated with a flocculant, the sludge is spread flat on a filter belt and gradually dehydrated through a gravity dewatering zone, a wedge-shaped preloading zone, and an "S" - shaped high-pressure pressing zone.

Disadvantages: Poor adaptability to mixed sludge and biochemical sludge, and high water consumption for backwashing.

Centrifugal sludge dewatering machine

Principle: The centrifugal force generated by high-speed rotation is used to separate solid and liquid phases, with the solid phase adhering to the inner wall of the drum and the liquid phase being discharged from the center.

Advantages and disadvantages:

No need for filter cloth, high degree of automation, but high noise and energy consumption.

Sludge has a high moisture content and is prone to wear and tear on equipment when it contains gravel.

Plate and frame dehydrator

Characteristics: The mud has the lowest moisture content, but it operates intermittently and is complex, requiring manual unloading.