METHOD AND DEVICE FOR WATER TREATMENT Russian patent published in 2011 - IPC C02F9/08 C02F1/28 C02F1/24 C02F1/52 

FIELD: process engineering.

SUBSTANCE: invention relates to water treatment. Proposed method comprises separating solid particles 1 from water and, at least, one filtration stage 2. Said separation is performed at rate exceeding 15 m/h by either precipitation or flotation. Note here that filtration 2 is performed directly on, at least, one micro- or ultra-filtration membrane. Proposed device comprises, at least, one settler, or, at least, one flotation tank 1 communicated with, at least, one micro bubble generator. Note here that filtration device 2 comprises first filtration device wherein first filtration stage occurs after separation of solid particles from water with the use of, at least, one micro- or ultra-filtration membrane. Besides, proposed device comprises coagulant injector 3 and, at least, one flocculation tank 4 communicated therewith to inject fine sand into flocculation tank, or before it. Settler 1 is communicated with clarified water discharge device 1b1 and clarifying sediment separator 1b2.

EFFECT: reduced filter soiling index and amount of involved equipment.

20 cl, 2 dwg, 2 tbl