METHOD OF CLEANING STANDING WATER RESERVOIRS FROM HEAVY METALS AND OIL PRODUCTS Russian patent published in 2017 - IPC C02F9/14 C02F1/62 C02F1/28 C02F1/40 C02F3/34 C02F1/463 B09B3/00 

FIELD: chemistry.

SUBSTANCE: method of cleaning standing water reservoirs from heavy metals and oil products involves the use of a sorbent, a coagulant and a coarse mineral matter. The bottom sediment and water are extracted. The extracted bottom sediment is composted with structurants, oil-oxidizing microorganisms, nutrient elements to obtain soils. Electrodes are used to reduce the residual metal concentration in soil. Separated from the bottom sediment, water is returned to a standing water reservoir. Water extracted from the reservoir is purified by successive sorption and filtration in a geochemical barrier filled with a mineral granular material-silicized fraction calcite of 2-5 mm, in which electrochemical current sources that generate a coagulant are located. Purified water is returned to the reservoir, creating water circulation. Water is filtered at a rate of 1-5 m/h at a geochemical barrier length of 8-16 m.

EFFECT: invention makes it possible to improve the efficiency of water treatment and bottom sediments of the reservoir.

1 dwg, 4 tbl