METHOD FOR DEEP BIOLOGICAL WASTEWATER TREATMENT WITH ANAMMOX PROCESS WITH BIOCENOSIS, IMMOBILIZED ON BRUSH LOADING Russian patent published in 2021 - IPC C02F3/30 C02F9/14 

FIELD: wastewater treatment.

SUBSTANCE: invention relates to the field of biological treatment of household and/or industrial wastewater close to them in composition, it can be used for treatment of wastewater of industrial enterprises, settlements, detached buildings. Wastewater is fed to bioreactors of the first and second stages with zones and with volumetric cassettes with brush loading and aeration system placed in them. Ammonification, denitrification and anammox process are implemented at low aeration intensity. The process of oxidation of organic pollutants and ammonium nitrogen is carried out at oxygen concentration and intensive aeration. The load on organic substances is set depending on the amount of biocenosis and ash-free substance. The processes of oxidation of organic substances and re-oxidation of residual organic substances, oxidation of ammonium nitrogen to nitrite nitrogen and anammox-process are carried out due to dissolved oxygen during intensive aeration, depending on the amount of biocenosis and ash-free substance. The duration of wastewater staying in the bioreactor is set. The flow for denitrification and anammox-process is recirculated in the direction of wastewater movement. Post-treatment of wastewater is carried out by two-stage filtration and disinfection of treated wastewater.

EFFECT: invention makes it possible to reduce the need for aeration, quickly restore the oxidative capacity of the structure, and combine microbiological processes, including nitri-denitrification and anammox process, in the bioreactor zones.

4 cl, 3 dwg, 2 tbl