Dewatering screw press is used for efficient thickening and dewatering of sludge waters. Sludge waters are water with amounts of suspended solids, which can be produced from waste water treatment, food proccessing industry, chemical industry and other branches of human activity.

The screw-press sludge dewatering machine is a new solid-liquid separation equipment, which uses the screw extrusion principle, produces strong extrusion force through the change of screw diameter and pitch, as well as the small gap between the moving ring and the fixed ring, to realize the extrusion dewatering of sludge.