METHOD FOR MUTUAL SEWAGE TREATMENT Russian patent published in 2001 - IPC

FIELD: sewage treatment for disposal of emulsified organic matters stabilized in water phase by surface-active agents, and ecologically hazardous electrolytes, applicable for mutual treatment of sewage of industrial enterprises. SUBSTANCE: spent commercial solutions of electrolyte are introduced in emulsified organic matters, the water and organic phases are separated; the emulsified organic matters extract the ions of heavy metals at the following relations of the process optimal parameters: , where C_T - concentration of extractable matter in the volume of the spent commercial solution of electrolyte; X_K - concentration of extractable matter in raffinate; K = n_V+C_Aρ^-1(Dn_A-n_V); Q-relation between the volumes of sewage containing emulsified organic matters and the spent commercial electrolyte; n_V - relation between the volumes of raffinate and water phase of the joined sewage; C_A - concentration of the extractive reagent in the volume of sewage water containing emulsified organic matters; ρ - density of the extractive reagent; D - coefficient of distribution of extractable matter between the extract and raffinate; n_A - relation between the volumes of the extract and extractive reagent, provided D≫1 and X_K ≅ C_ND^-1, where C_N - concentration of extractable matter in the saturated solution of extract. EFFECT: reagentless and wasteless process of mutual sewage treatment based and execution of extraction of the ions of metals to the oil phase at optimal parameters. 3 dwg, 1 tbl, 3 ex