METHOD AND INSTALLATION FOR DEEP BIOCHEMICAL SEWAGE WATER PURIFICATION Russian patent published in 2015 - IPC C02F9/00 C02F3/02 C02F3/12 

FIELD: chemistry.

SUBSTANCE: invention can be used for the purification of household sewage waters and sewage water of middle and small settlements and detached houses, close to them in composition. The method of the deep biochemical purification of sewage waters includes rough mechanical treatment in sand-traps, supply of the discharge into a sewage regulator-pre-aerator with a variable level (1) and processing with air oxygen with maximal active mixing, after which primary aeration and re-aeration are carried out in an aerotank with aerators and nitri-denitrifying zones (2, 3, 4, 5). Purified water is precipitated in a secondary setting tank (6) and supplied to a unit of after-purification on filters and further for additional purification water is passed through an electrostatic field, with passing recycled sludge through a magnetic field. After that, water passes through an installation of ultraviolet decontamination.

EFFECT: invention makes it possible to reduce dimensions and metal consumption of the installation, as well as energy consumption.

4 cl, 1 dwg