Sludge Screw Press Dewatering Machine for Paper Mill Wastewater

The sludge dewatering machine is very suitable for the treatment process of paper sludge treatment.

The papermaking process produces a large amount of wastewater, and a large amount of sludge is produced during the wastewater treatment process. The main components of pulp sludge are: residual pulp, calcium carbonate powder, kaolin powder, modified starch and other organic or inorganic additives. Therefore, a pulp screw press is necessary.

The working principle of the sludge dewatering machine in the paper mill:

When the screw drives the transmission shaft to rotate, multiple solid active laminates around the transmission shaft move relative to each other. Under the action of gravity, water is filtered out from the gaps between the relatively moving rings, achieving rapid concentration.
The paper mill sludge moves forward as the screw rotates. Along the mud cake outlet direction, the screw pitch gradually decreases. The gap between the rings also gradually decreases, and the volume of the screw chamber continues to decrease.
Under the action of the outlet back pressure plate, the internal pressure gradually increases. With the continuous operation of the screw drive shaft, the water in the sludge is squeezed out. The solid content of the filter cake increases continuously, achieving continuous dehydration of paper mill sludge.