Treatment of chrome-containing wastewater using spent hydroxyl iron oxide desulfurizer.

The spent hydroxyl iron oxide desulfurizer was taken as the research object, and on the basis of analysis of its composition, Cr in wastewater was treated with Fees, and the chromium was removed by alkali neutralization and precipitation. Under the optimum treatment conditions, the mass concentration of Cr decreased from 10. 00 mg/L to 0. 42 mg/Land the removal rate reached 95. 8%. Under the optimal treatment conditions, two kinds of chroming-containing wastewater from an electroplating workshop in Jinzhou were treated. The ma's concentration of Cr, the ma's concentration of total chromium and the pH of the treated effluent met the "Standards for Comprehensive Wastewater Discharge" of GB 8978. It is expected to achieve the goal of treating waste with waste of waste hydroxyl iron oxide desulfurizer in this direction. [ABSTRACT FROM AUTHOR]