Usually, different kinds of sludge will be produced during water processing. The sludge dehydrating device are mainly used to decrease water content, reduce sludge volume, and make the processing of next sludge treating step easier. The sludge dewatering machines can be usually including the following type: belt filter press, centrifugal dewatering machine, plate and frame filter press and screw type sludge dehydrator. Recently, the belt filter press is widely used in the sludge dehydrating. However, some problems are being with this machine, such as the large quantities of water consumption, operation requirement is high, etc. the screw type sludge dehydrator is a new type sludge dehydrator with its advantages such as energy saving, operation stable, highly automation. It’s quickly recognized and accepted by the market.
Screw type sludge dehydrator which uses the screw extrusion principle is a new type of solid-liquid separation device. It reaches the goal of extrusion dewatering sludge by the powerful extrusion pressure of changing the screw diameter and distance, and the tiny spacing between moveable ring and fixed ring.
