DILUTE SLURRIES

摘要

A system for removing water from dilute slurries of the type discharged from waste water treatment plants, including feeding the dilute slurry into a reservoir and passing concentrically mounted endless screen and porous belts through the reservoir for absorbing water from the slurry. The water is squeezed from the belts and the thus thickened slurry is transported from the reservoir to a position for discharge onto the screen belt which moves in intimate contact with the porous belt. Such intimate contact facilitates further removal of water from the slurry by capillary action as the belts move linearly towards the end of the system. The belts then separate from each other. Water is squeezed from the porous belt and the screen belt with its slurry cake then runs through a pair of rollers for further slurry dewatering and compaction to a desired solids concentration. The thus dewatered slurry cake is then transferred to one of the rollers and subsequently removed from the system for ultimate disposal.