UNIT FOR THOROUGH CLEANING OF WATER Russian patent published in 2002 - IPC

FIELD: domestic and industrial water supply and water discharge systems; preparation of potable water suitable for reuse. SUBSTANCE: proposed unit includes the following components arranged in succession: mixer, floatation device, multi-layer filter with layers of sand, anthracite and polymer material, contact reservoir, ion exchanger with regenerator and automatic multi-position valve, as well as reagent introducing branch pipe made in form of ejector with narrowing and widening tips provided with curvilinear helical grooves. Mixer has lower conical part and upper cylindrical part; inner surface of conical part is provided with curvilinear helical grooves. Brought to lower part of floatation device from compressor is air line which is connected to flat flexible ring by means of elastic tubes; flexible ring is provided with widening tips with curvilinear helical grooves. Pulsators made from bimetallic bent plates are arranged in cavity of flat flexible ring. Mounted in upper part of floatation device are deaerators-chutes provided with double bottom and discharge pipe for removal of solid particles with air bubbles. Waste water discharge pipe line connected to floatation device is laid at depth of no less than 30 cm above upper level of water. EFFECT: improved quality of cleaning water due to forming dispersed water and air emulsion. 5 dwg