METHOD OF UTILIZATION OF WASTE ACTIVE SLUDGE AT TREATMENT PLANTS Russian patent published in 2019 - IPC C02F11/14 C02F1/76 C02F9/04 C02F101/30 

FIELD: cleaning devices.

SUBSTANCE: invention can be used in the field of purification of industrial and domestic wastewater in the disposal of waste activated sludge. For the implementation of the method in the biomass of waste (excess) activated sludge injected mixture of solutions of ammonium sulfate 10–12 % (NH₄)₂SO₄ and sodium hypochlorite 10–12 % NaClO at the rate of 100 l of 10 % solution of ammonium sulfate (NH₄)₂SO₄ on 1 m³ biomass and 100 l of 10 % sodium hypochlorite solution NaClO per 1 m³ biomass. Mixture obtained is kept under natural conditions for at least 2 hours and the process of utilization of spent activated sludge is carried out at ambient temperature.

EFFECT: method provides a significant reduction in the volumes of sludge beds and the prevention of the negative impact of waste (excess) activated sludge on the environment while eliminating the unpleasant odor at the treatment plant.

1 cl, 1 ex