Screw Sludge dehydrator Layers of spacers, fixed and free rings are secured in place by rods. The screw press inner diameter of the free rings are slightly smaller than the screw major diameter, laying on the screw crest & continuously moving up and down following the screw Press rotation, & creating multi disk screw press a self cleaning effect. The screw Press pitch & the zone in between becomes smaller towards the end plate of sludge dewatering machine , which gives pressure to dewater the sludge. Sludge Dewatering drum is comprised of sludge thickening interlaminated fixed rings and moving rings. Sludge Filtrate is discharged from the gaps between the rings and dewatering wastewater treatment. Dewatering press Moving rings are mobilized by the Screw Press to prevent clogging. 
