WATER PURIFICATION COMPLEX Russian patent published in 2007 - IPC C02F9/14 C02F1/32 C02F1/52 C02F3/32 

FIELD: purification of town waste water; final treatment of waste water according to technical Specifications.

SUBSTANCE: proposed water purification complex includes intake chamber 1, grates 2, sand traps 3, primary settlers 4, aerotank 5, secondary settlers 6, aerated bioreactors 7, system of ponds: 1st stage purification pond 8, 2^nd stage purification pond 9 and 3^rd stage purification pond 10, mechanical cleaning unit 11, ultraviolet radiation station 12 and pump station 13. Waste water from intake chamber 1 flow to pump station 13 by gravity. Water purification complex includes also reservoir-sludge compactor 16 and mechanical sediment dehydration shop 15 connected with sand traps by means of pipe line 14; complex is also provided with pipe line 18 for delivery of excessive sludge from 1^st stage purification pond 8 and 2^nd stage purification pond 9 to intake chamber 1; pipe line 17 for delivery of return activated sludge from secondary settlers 6 to aerotank 5 and pipe line 19 for delivery of excessive sludge from secondary settlers 6 to intake chamber 1. Air from compressor 21 is supplied to aerotank 5 through main 20.

EFFECT: improved quality of purification; possibility of reusing cleaned water in industries.

6 cl, 1 dwg