含氧硫酸盐处理某电镀厂六价铬废水条件研究

Study on Treatment of Chromium (Cr (Ⅵ)) in Electroplating Wastewater by Several Sulfurous Oxysalts

通过对亚硫酸钠、亚硫酸氢钠、焦亚硫酸钠、连二亚硫酸钠、硫代硫酸钠等五种含氧硫酸盐处理本市某电镀厂含铬废水的研究,从处理成本考虑选出最佳的还原剂为焦亚硫酸钠,其处理效果最佳pH为2,投加质量比为3.768。

The reaction properties of five reducing agents： Na2SO3,NaHSO3,NaS2O5,NaS2O4,NaS2O3,in treating electroplating wastewater containing Cr.Finally the best reducing agent is NaS2O5,the best pH for it is 2,and the adding mass ratio is 3.768,considering the cost of processing.