The process of Cr 6+ ion reduction by various reagents with the subsequent sedimentation with addition of alkaline wastes of petrochemical manufactures is investigated. It is shown that the most effective reducer is sodium thiosulfate. Alkaline wastes can replace traditionally applied calcium hydrate.
альваностоки, ион Cr(VI), восстановление, очистка, стоки нефтехимических производств, оптимальные условия, electroplatings wastes, Cr(VI) ion, reduction, waste water treatment, petrochemical waste waters, optimal conditions
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