FIELD: treatment facilities.
SUBSTANCE: invention may be used foe deep biological cleaning of domestic waste water in detached cottages, farmland houses, hotel complexes, schools and catering facilities. According to the invention two versions of method implementation are proposed. Both of them provide for air bubbles moving downwards (version 1) and upwards (version 2) and using related device. The device consists of a vertical pipe 5 installed with gap 7 as regard to tank bottom 1 and equipped with a nozzle 6 for waste water supply. Biological bed 8 and fine bubble diffuser 9 are installed vertically in the centre of the pipe 5. The tank 1 is ensured with two pairs of air lifts 12, 14 and connected with holding pond 4 via overflow conduits 2, 3. The holding pond is equipped with aearator 25, sludge re-circulation pump 24 and draining valve for clean water discharge. Interrelated shutoff valves 26, 27 are installed in the overflow conduits 2, 3. The device is also equipped with a control unit 19, compressor 20, changeover valve 21, and distributor 23 with regulator 22.
EFFECT: production of high-quality clean waste water, reduced power inputs at intensified cleaning, improved operational reliability of plant operation and reduced manpower during both production and operation processes.
4 cl, 2 dwg
