METHOD OF USING ANAMMOX-BACTERIA ON BIOFILM CARRIERS TO REMOVE AMMONIA FROM THE STREAM OF WASTE WATER Russian patent published in 2016 - IPC C02F3/34 C02F3/30 C02F3/02 C12M1/12 C12N1/20 

FIELD: technological processes.

SUBSTANCE: disclosed is a method for biological treatment of waste water (versions) and method with integrated fixed film of active sludge to remove ammonia from waste water. Treatment method involves separation of primary sludge from waste water to form primary effluent, biological treatment of waste water in the reactor with formation of secondary effluent and secondary sludge, treatment of primary and secondary sludge. Treatment includes formation of fermented sludge, dehydration of fermented sludge for formation of sludge water, the direction of sludge water in biofilm reactor of deammonization, cultivation of biomass which is rich in ammonium-oxidising and anammox-bacteria, on biofilm carriers for simultaneous nitrification and denitrification of ammonium. After processing the secondary effluent is brought in contact with biomass and biomass is used for reduction of ammonia concentration in the secondary effluent. Then biomass is recovered by means of contact of biomass with sludge water and continuation of alternate biomass contact with secondary effluent and sludge water.

EFFECT: invention provides effective reduction of ammonia concentration in waste water.

25 cl, 9 dwg