APPARATUS FOR CLEANING WASTE WATER Russian patent published in 1997 - IPC

FIELD: waste water purification. SUBSTANCE: apparatus has cylindrical-conical settling chamber with annular tray in its upper part, filters with grainy charge located outside the chamber, water supply pipeline, drain pipeline, and branch pipe for removing sediment. Drain pipeline is made in the form of siphon with its ascending branch disposed in settling chamber and provided with telescopic fitting having jet-cut opening. Filter charge is composed of latex wastes. Charge height is 0.5-0.75 of that of filter module. Density of charge is 0.07-0.08 g/cu.cm and its waste water load capacity 35-50 l/sq.cm h. EFFECT: improved design. 2 cl, 1 dwg