METHOD AND DEVICE FOR WATER TREATMENT Russian patent published in 2013 - IPC C02F9/08 C02F1/52 B01D21/01 

FIELD: process engineering.

SUBSTANCE: invention may be used for water treatment. Proposed method comprises interaction of water, ballast and flocculating agent in flocculation zone 1; introduction of mix in precipitation zone 11; removal of precipitate and ballast from precipitation zone bottom and directing it into mixing zone 19, mixing; withdrawing the mix of precipitate and ballast from zone 19 and feeding into hydraulic cyclone 26; feeding product from hydraulic cyclone bottom into flocculation zone 1; extracting portion of precipitate from hydraulic cyclone top section; circulating remaining portion of precipitate into intermediate zone 19; continuous measurement of concentration of contaminants in water and defining the amount of ballast required to get water of required quality. Proposed device comprises flocculation tank 1 with mixer 2; water feed pipeline 5 to feed water into said tank 1; settler 11 provided with top outlet channel 15; pipeline 21 to communicate settler bottom with intermediate tank 16 with mixer 20; pipeline 25 to communicated tank 19 with hydraulic cyclone 26; pipeline 30 to circulate portion of product from cyclone 26 into intermediate tank 19; pickups 40, 40a, 41, computer 41 for continuous determination and adjustment of ballast amount.

EFFECT: optimised process.

48 cl, 9 dwg