We have developed complete run-down screens (DSM type) with box and curved wedge wire screens to suit specific customer requirements in the sugar, paper pulp, water treatment, and chemical industries.

A no-moving part unit that cascades a solids-laden slurry down a wedge wire screen to separate solids from liquids. The slurry is pumped or gravity-fed into the top chamber of the unit, flows over the full-width wires, and cascades down the curved screen surface. The liquid passes through the screen voids into the collection chamber below. Solid particles larger than the screen void size remain on the surface, and as this accumulating mass increases in weight/volume, it gently slides down the screen surface, compacting and becoming more water-rich as it goes down. At the bottom discharge chute, the solids simply fall off or, in some applications, go through a drum or screw press unit for further dewatering. The static screen version has its screen rigidly fixed in position while another, more efficient unit, is mounted to enable a small motor to vibrate its screen.