METHOD FOR DISPOSAL OF WASH WATER FROM A WATER DEIRONING STATION Russian patent published in 2021 - IPC C02F1/52 B01D21/02 B01D21/24 

FIELD: purification of water.

SUBSTANCE: invention relates to the purification of underground water from iron compounds and can be used for water treatment in industrial or domestic drinking water supply. The method for disposal of the wash water of the water deironing station includes the supply of washing water to the clarifier 1 with a conical bottom, thickening and gravitational separation of the sediment. The sediment from the conical part of the clarifier is pumped to the mechanical dewatering unit of the sediment. The clarified water is pumped out in two stages, while at the first stage the clarified water is removed from the upper part of the clarifier for reuse, and at the second stage the clarified water is removed from the conical part of the clarifier into the drainage tank in the laminar flow mode through the drainage intake device 12, adjustable in height to the level of the water-sediment interface. The sediment concentrated in the lower part of the clarifier is pumped by a screw pump to the mechanical dewatering unit in the form of a nutsche filter 3, where the filtrate is separated from the wet sediment by vacuum pumping of the filtrate by an ejector 10, through which the clarified drainage water is pumped out by the pump from the drainage tank through the pipeline 7 to return the filtrate to the clarifier.

EFFECT: invention provides highly efficient disposal of wash water from deironing stations with the possibility of reuse of wash water.

1 cl, 1 dwg