Treatment of Waste Water Containing Vanadium and Chromium by a Two-Fractional Precipitation Process

摘要

In this paper, a two u0014u0014 step fractional precipitation process for the treatment of waste water containing vanaduim and chromium is presented. An annual capacity of waste water treated can reach 100,000 tons with the existing equipment in Emei Ferroalloys Co. The contents of V and Cr after treatment conforms completely with the discharge standard stipulated by the State. Precipitates cotnain enriched V and Cr which can be recovered and used again. Recovery amounts to 87