FILTRATION METHOD FOR CONTROL OF FILTRATION UNIT WITH GAS-SUPPLY FROM FILTRATE SIDE FOR PREVENTION OF RETURN FLOW OF FILTRATE Russian patent published in 2016 - IPC B01D61/12 

FIELD: machine building.

SUBSTANCE: invention relates to the liquid filtration method using the filtering module comprising the casing with at least one filtering element inside, forming the first compartment in the casing from the liquid supply side to the filtering surface, and the second compartment from the filtrate side, opposite to it, and the outlet for filtrate which is interconnected with the second compartment from a filtrate. The filtering element is arranged vertically. The filtrate outlet is located in the lower part of the filtering element. The gas-supply is provided in the second compartment from the named filtrate side in the filtering element. The compressed gas is supplied into the second compartment from the filtrate side during filtration simultaneously with stages of pressure liquid supply of under for a filtration in the first compartment and descent of the filtered liquid filtrate from the second compartment. The second compartment is simultaneously filled partially with liquid filtrate and partially with compressed gas.

EFFECT: method provides effective functioning of the filtering module during longer period of time at simultaneous decrease of operational costs.

10 cl, 8 dwg