WATER SEPARATION SYSTEM, METHOD AND APPARATUS FOR CONSTRUCTION DEBRIS

摘要

A system for separating construction debris into low density debris (152) and high density debris (112). The construction debris is delivered into a rotating drum (73) having front and rear discharge openings (54 and 52, resp.). The lower portion of the drum is filled with water, and the debris is deposited onto the water, with the low density debris floating at the surface and the high density debris descending to the bottom of the drum. A plurality of high velocity water jets (136, 134) are positioned forwardly of the debris receiving location to create a turbulent high velocity water flow at an upper zone of the water in the drum to move the wood and other low density material toward a rear converging passageway (74) that leads into a rear discharge opening (52). The higher density material is carried by a scroll type conveyor (104) forwardly in the drum to a forward discharge location where rotating paddles lift the high density debris upwardly and hence move it into the front discharge opening (54). Rear and front water separation and discharge sections are provided in the form of a fursto-conical structure having through openings to separate the water from the low density and high density debris.