FIELD: sewage treatment. SUBSTANCE: method involves contacting of water with a mixture of aluminium and copper chips taken at the ratio 1:5-5:1 following by precipitation of chrome hydroxide with alkali, settling and precipitate separation by filtering. Sewage treatment degree from Cr6+ is 29.9% , residual concentration of Cr6+ in treated water is 0.03-0.05 mg/l, treatment time is 3-10 min. EFFECT: improved method of sewage treatment. 1 tbl
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