APPARATUS FOR BIOLOGICAL PURIFICATION OF SEWAGE WATER Russian patent published in 2007 - IPC C02F3/12 

FIELD: equipment for biological purification of sewage water.

SUBSTANCE: apparatus for biological purification of sewage water has housing 1 incorporating balancing tank 4, aeration tank 8 divided by means of vertical partition walls 9 into steps furnished with aeration systems 10 and attached microflora carriers 11, secondary settler 12 with silt sedimentation hopper-accumulator 13, silt sedimentation discharge branch pipe 14, and unit 15 for bactericidal treatment of water. Housing 1 is furnished on the outside with thermal insulation 2 and is divided by means of vertical partition walls 3 into two reservoirs. First of reservoirs is balancing tank 4 having volume equal to at least 4-6 volumes of aeration tank and equipped with two vertical partition walls 5. Second reservoir 6 is equipped with system 7 for maintaining constant temperature and moisture content. Second reservoir 6 incorporates aeration tank 8, secondary settler 12 with silt sedimentation hopper-accumulator 13, branch pipe 14 for discharge of said silt, and unit 15 for bactericidal treatment of water.

EFFECT: reduced sizes, metal usage and manufacture costs of apparatus.

1 dwg, 1 ex