Process for the purification of waste waters containing...

C - Chemistry – Metallurgy – 02 – F

Patent

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C02F 1/58 (2006.01) C02F 1/26 (2006.01)

Patent

CA 2243881

This invention relates to a process for the purification of waste waters containing organic and, should the situation arise, inorganic sulphur compounds, which waste waters contain a proportion of mercaptobenzothiazole and/or derivatives thereof and, should the situation arise, a proportion of benzothiazole and/or derivatives thereof and/or mercaptobenzimidazole and/or derivatives thereof and, should the situation arise, thiosulphate, whereby the waste waters are treated with an extracting agent comprising salts of aliphatic amines and aliphatic and/or aromatic hydrocarbons.

La présente invention porte sur une méthode de purification d'eaux résiduelles renfermant des composés organiques et, éventuellement, des composés minéraux sulfurés, lesquelles eaux résiduelles contiennent une certaine proportion de mercaptobenzothiazole et (ou) de leurs dérivés et, éventuellement, une certaine proportion de benzothiazole et (ou) de leurs dérivés, et (ou) de mercaptobenzimidazole et (ou) de leurs dérivés et, éventuellement, de thiosulfate; les eaux résiduelles sont traitées avec un agent extracteur renfermant des sels d'amines aliphatiques et (ou) des hydrocarbures aliphatiques et (ou) aromatiques.

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