SEWAGE WATER TREATMENT METHOD Russian patent published in 1995 - IPC

FIELD: treatment of sewage water. SUBSTANCE: method involves steaming out sewage water followed by formation of ammonia-contaminated secondary steam and suspension; providing condensation of secondary steam and cleaning of secondary steam to obtain condensate, which may be further recovered. Cleaning of condensate is effectuated by counterflow contacting with open steam, with mixture of fresh and secondary steam taken in the ratio of 1.0: (0.1-1.2) being used as open steam. Gas-vapor mixture obtained as a result of cleaning of condensate is supplied for steaming out of sewage water and then conducted for absorption, with amount of mixture being at least 2.0 mass. percent. EFFECT: increased efficiency of method and high quality of cleaned water. 1 dwg, 2 tbl