COMPACT AGGREGATE FOR DEEP BIOCHEMICAL SEWAGE PURIFICATION Russian patent published in 1996 - IPC

FIELD: small towns and separate building sewage deep biochemical purification. SUBSTANCE: compact aggregate has: circulating oxidizing canal 1, in which secondary settler 6 is built; biofilter 8, reservoir pure water 10, with ejector 13 for ozonizing and disinfection of purified water, micro filter 9 for water clearance from suspension and aerator in the form of ejector 2, that provides circulation and mixing of treated water in canal. Inlet of pipeline 11, that feeds water from canal in biofilter 8, is located in canal opposite to water movement direction to provide backwater require for arrangement of water self-running in aggregate. Pipeline 4 with valve 5 provides feeding of return active sludge into circulation canal. Outlet of the pipeline is located in direction of water movement. Aggregate outlet purified water characteristics allow to discharge it into fish-farming ponds. EFFECT: compact sewage purification aggregate allows to purify water to be used in fish-farming ponds. 4 cl, 2 dwg