METHOD FOR WASTEWATER BIOLOGICAL TREATMENT Russian patent published in 2023 - IPC C02F3/12 C02F3/30 C02F9/00 

FIELD: water treatment.

SUBSTANCE: invention is intended for purification and collection of domestic, industrial wastewater and can be used for organization of purification systems. The station for biological wastewater treatment includes chambers for purification steps, an aerator and a submersible pump located inside the housing. The first chamber is located above the others and has a filler-load of anaerobic microorganisms as the bottom. The remaining chambers are located inside the housing and are purification stages, and the submersible pump is located in the chamber of the last purification stage and supplies the treated water to the first chamber with a load, as well as to the chambers of the previous purification stages. Wastewater treatment method includes water treatment in a chamber with anaerobic microorganisms, staged treatment in chambers with aeration, performed by ejectors, which is carried out in the 3rd and 4th stages of treatment cyclically. Moreover, air for aeration is mixed with circulating water on the ejectors and it is supplied in the mode of 10-14 or 16-20 minutes of aeration and 40-44 or 46-50 minutes of lack of air supply.

EFFECT: increased efficiency of cleaning while maintaining the compactness of the installation.

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