尾矿库酸性废水处理研究

介绍了使用两段中和法处理矿山酸性废水，即首先用矿物或废渣作中和剂将废水的pH值调节到4．0左右，再用石灰乳进行中和。在实验室研究的基础上，对某铁矿尾矿库酸．洼废水采用两段中和法进行试验。试验结果表明，出水pH值达到6～8时，出水水质指标达到国家排放标准。

Two-steps neutralization method was introduced to treat acid mine drainage, tirst to raise pH value of the wastewater to about 4.0 with mineral or waste slag as the neutralizing agent, and then to neutralize the water with milk of lime.On the basis of laboratory research, the test was made on treating the acid wastewater from the tailings reservoir of an iron mine by two--steps neutralization method.The results showed that the treated water was at pH 6-8, and the quality indexes of the discharged water met the state standard.