提钛尾渣处理钛白废水试验研究

为了拓展攀钢提钛尾渣的利用途径及降低钛白企业废水处理成本，进行了提钛尾渣处理钛白废水的试验研究。试验表明，处理钛白废水的提钛尾渣中氯质量分数应≤0.24%，即必须使用洗后提钛尾渣处理钛白废水。随着废水酸浓度的增加及洗后提钛尾渣配比的增加，提钛尾渣与废水中和后pH越来越低；洗后提钛尾渣可代替20%石灰石液体中和废水，中和后pH、滤液及中和渣的化学成分在正常范围内。

Experimental study on treatment of titanium dioxide waste water by chlorination titanium blast furnace slag

In order to expand utilization ways of chlorination titanium blast furnace slag as well as reduce the cost of treatment of acid waste water in the titanium dioxide factory，treatment of acid waste water by chlorination titanium blast furnace slag was studied.Results showed that，the chlorine mass fraction of chlorination titanium blast furnace slag was less than or equal to 0.24%，i.e.the chlorination titanium blast furnace slag must be washed before it was used to treat the wastewater.With increase of the concentration of acid waste water and the ratio of washed chlorination titanium blast furnace slag，the pH of neutralization of acid waste water by chlorination titanium blast furnace slag decreased gradually.20% CaCO3 liquid could be replaced by the washed chlorination titanium blast furnace slag.The pH，chemical compositions of filtrate，and neutralization slag were all in normal range after the neutralization.