METHOD OF TREATING WASTE WATER WITH OBTAINING PURIFIED WATER AND DECONTAMINATED WASTES Russian patent published in 2019 - IPC C02F9/14 C02F3/12 C02F3/06 C02F1/74 C02F1/78 B01D21/00 C02F1/44 C02F1/28 

FIELD: water treatment.

SUBSTANCE: invention relates to purification of natural and waste water. Method of treating waste water with obtaining purified water and decontaminated wastes involves purification of waste water through a modular complex, in which the biological treatment plant is made in form of a module for coarse biological treatment of waste water, performing preliminary separation of solid inclusions from fine fractions by means of polymer charge, and saturating water with atmospheric oxygen. Prior to preliminary separation of solid inclusions from fine fractions large solid particles are removed from effluents by means of thickener installed in mechanical treatment module of waste water. After coarse biological treatment, organic contaminants and biogenic elements are removed in a membrane bioreactor which is placed in a module for fine purification of waste water. Then dissolved and suspended organic substances are oxidized in the adsorption and chemical oxidation or decarbonisation module of water using ozone. Purified water from the adsorption and chemical oxidation or decarbonisation module of water is directed into the purified water reservoir, from where it is supplied for technical needs and irrigation of the territory. Excess purified water is removed by gravity into drain columns or filtration wells for recycling water. Afterpurification of treated water is carried out in a reverse osmosis plant, which is installed after drainage columns, after which clean water is used to replenish a fish pond.

EFFECT: invention provides environmental safety, high quality of water treatment, allowing to replenish treated water reservoirs for fish farming.

3 cl, 1 dwg