APPARATUS FOR PRETREATMENT OF WASTE WATER BEFORE BIOLOGICAL TREATMENT Russian patent published in 2021 - IPC C02F3/00 C02F1/48 C02F9/14 

FIELD: treatment.

SUBSTANCE: invention relates to biological treatment of waste water and can be used for creation of waste water treatment systems in food, textile, pulp-and-paper, leather industry, enterprises of agroindustrial complex and communal sphere. Pre-treatment plant for waste water before biological treatment contains control tank 1, pump 2, settling tank 7 and biological treatment unit 8. Plant is equipped with apparatus for vortex layer of ferromagnetic particles 5, as well as ejector 3, made with possibility to supply reagents into waste water from unit for preparation and supply of reagents 4. Control tank 1 is communicated via pipeline 2 via pump 2 with ejector 3 with outlet communicated with vortex layer of ferromagnetic particles 5. Output of vortex layer device of ferromagnetic particles 5 is connected to settling tank 7, which is connected by pipeline with biological waste water treatment unit 8. At that, pump outlet 2 is communicated via pipeline with control tank 1 via gate valve to make circulation circuit for hydraulic mixing of waste water in control tank 1.

EFFECT: disclosed plant provides higher efficiency of removal of pollutants from highly contaminated industrial waste water in the form of suspended and colloidal particles, cations of heavy metals, and also provides intensification of process of biological treatment of waste water.

1 cl, 1 dwg, 3 tbl, 2 ex