INDUSTRIAL EFFLUENTS CLEANING Russian patent published in 2014 - IPC C02F9/14 C02F3/30 C02F1/44 

FIELD: process engineering.

SUBSTANCE: invention relates to treatment of industrial effluents. Treatment of effluents containing organic compounds comprises pre-treatment step whereat effluents 11 with organic compounds are fed into oxygen-free tank 1. Compounds 12 containing nitrogen and phosphorus are added thereto to execute anaerobic biological treatment. Treated water is fed into tank 2 for anaerobic biological treatment. At second step, water is fed into tank 3 for anaerobic biological treatment to discharge thus treated water through solid-liquid phase separator as reprocessed water. At third step, reprocessed water is fed to separator 4 of membrane separation by reverse osmosis to divided pre-processed water into water 16 forced through reverse osmosis membrane and concentrated brine 17. At least a portion of concentrated brine 17 is forced back into oxygen-free tank 1.

EFFECT: lower costs.

12 cl, 1 dwg, 1 tbl