METHOD FOR BIOLOGICAL TREATMENT OF EFFLUENTS AND DEVICE THEREFOR Russian patent published in 2016 - IPC C02F3/12 C02F1/72 C02F101/16 

FIELD: treatment plants.

SUBSTANCE: group of inventions can be used for biological treatment of domestic and industrial waste water. To realise method not less than 70% of active sludge is treated with hydrogen peroxide for 2 hours in continuous mode with addition of hydrogen peroxide in amount of 2 to 4 wt% from absolutely dry substance of active sludge with constant stirring. Device for implementation of proposed method comprises primary settling tank (1), aeration tank (3), secondary settling tank (2), pump (6), vessel for treatment of active sludge (4), container for storage of hydrogen peroxide (5), proportioning pump supply of hydrogen peroxide (7) and pump for supply of active sludge (8). Output of primary settling tank (1) is connected to first input of aeration tank (3), output of which is connected to input of secondary settling tank (2). Output of secondary settling tank (2) is connected in parallel to first input of vessel for treatment of active sludge (4) through pump (6) and to second input of primary settling tank (1). Reservoir (5) for storage of hydrogen peroxide via dosing pump (7) is connected to second input of vessel (4) for processing of active sludge, and output of vessel (4) through pump (8) for supply of active sludge is connected to second input of aeration tank (3).

EFFECT: higher efficiency of purifying waste water from biogenic substances.

2 cl, 3 dwg, 2 tbl, 8 ex