助凝助沉剂在矿山酸性废水处理中的试验研究

摘要

The text is on a treatment trial which deals with the acidic wastewater samples from a copper mine in China. Zeta potential and particle size analysis are used synthetically for studying the mechanisms of speeding up the sedimentation of floc by coagulant aid and settling agent. Experimental results show that adjusting the pH of wastewater to 8.0,adding 1.6 mg/L cationic polymer flocculant PAM and 2.5 g/L coagulant aid and settling agent can obtain better flocculation-sedimentation effect, faster sedimentation rate and larger precipitant size.%以某铜矿山酸性废水为处理对象,综合运用Zeta电位、粒度分析等方法对助凝助沉剂加速絮凝物沉淀的机理进行研究.试验结果表明,废水pH=8.0,阳离子型高分子絮凝剂PAM的投加量为1.6mg/L,助凝助沉剂用量为2.5g/L时,可以取得较好的絮凝沉淀效果,沉淀速度较快,沉淀物粒径较大.