METHOD FOR WASTEWATER BIOLOGICAL TREATMENT Russian patent published in 2023 - IPC C02F3/12 C02F1/30 

FIELD: wastewater treatment.

SUBSTANCE: biological treatment of wastewater from biogenic elements and can be used for wastewater treatment at local treatment facilities. The activated sludge of aeration tanks is affected by lighting in the dark with the light of red and blue colours. At the same time, the activated sludge is fed. Then, the values of chemical oxygen consumption, redox potential and the amount of released gases are measured to control the working capacity of the sludge, the dose of feeding the activated sludge and/or the duration of exposure to the activated sludge of the aeration tanks is adjusted by lighting it until the specified values of the parameters are achieved, ensuring viability of the sludge. Feeding is carried out at an ambient temperature at which viability of the sludge is maintained, as well as with pH adjustment in the range of 7.5-8 with a total biological consumption of oxygen, nitrogen and phosphorus in a ratio of 100:5:1.

EFFECT: increased extraction of the amount of organic contaminants from waste water.

2 cl, 8 dwg, 9 tbl