FIELD: chemistry.
SUBSTANCE: invention relates to aerobic biological treatment of waste water and can be used in treatment plants of residential areas, agricultural and industrial companies. First, waste water is fed into a mechanical treatment device 1 for separation of solid residue, and then into a sand separator 2 and then further into a balancing tank 5 for balancing incoming waste water on concentration and water consumption. From the balancing tank 5, waste water is fed through a pipe 12 by a pump 32 into a primary settling tank 3. From the primary settling tank 3, waste water is fed through a pipe 13 into a biosorption tank 6. From the tank 6, waste water is fed through a pipe 14 into a biooxidation tank 7. Settling of the waste water and active sludge takes place in a secondary settling tank 4. Further, the treated waste water is fed into a post-treatment module 8 and then into a decontamination apparatus 9. The purified and decontaminated waste water is then output from the apparatus. Raw sludge and excess active sludge, separated after primary and secondary settling, are fed into an enzymatic-cavitational module 10 to obtain compound fertiliser.
EFFECT: invention increases efficiency and quality of treating waste water while simultaneously recycling raw sludge and active sludge by producing compound organomineral fertiliser therefrom.
5 cl, 2 tbl, 1 dwg
