METHOD FOR FLOTATION TREATMENT OF SEWAGE WATER Russian patent published in 1996 - IPC

FIELD: treatment of industrial sewage waters of dyeing and finishing processes of textile industry. SUBSTANCE: sewage waters are subjected, first, to nonreagent and then, to reagent flotation treatment with use of cationic organic floculant. EFFECT: higher degree of purification of sewage waters with respect to suspended matter, dyes, surfactants, and possibility of reuse of 90% of surfactants, reduced consumption of reagents by 90%, 10-fold reduction of volume of floating slime, as compared with the known methods, prevented pollution of environment due to exclusion of disposal of organic pollutants to open water reservoirs. 1 dwg, 2 tbl