赤泥对煤矿酸性废水中污染物的去除效率研究  

On the Removal Efficiency of Red Mud for Contaminants in Coal Mine Water

作　　者：钱晓莉[1] 吴永贵[1] 陈程[1] 陈淼[1] 何天容[1] 

机构地区：[1]贵州大学资源与环境工程学院,贵阳550003

出　　处：《西南大学学报（自然科学版）》2011年第3期68-72,共5页Journal of Southwest University(Natural Science Edition)

基　　金：贵州大学自然科学青年基金资助项目(2007)048;贵州大学资源与环境工程学院青年基金ZHY0802;贵州大学资源与环境工程学院青年基金ZHY0910;973国家重点基础研究发展计划项目(2008CB417209);国家自然科学基金资助项目(200977020)

摘　　要：采用单因子试验,初步探讨了赤泥改性温度、煤矿废水pH值、固液比、振荡频率、MnO2投加量等5个因素对赤泥去除煤矿废水中Fe,Mn,Cu,Zn,Cd等污染物效果的影响.结果表明:赤泥对煤矿废水中污染物均有较高去除效率;当固液比为50 g/L,MnO2投加量为3 g/L,振荡频率为185 r/min,振荡时间为1 h,煤矿废水pH为4.0,赤泥改性温度为700℃时,废水中Fe,Mn,Cu,Zn,Cd的去除效率分别为99.86%,99.09%,93.62%,94.04%和93.05%.A single-factor experiment was made to study the effects of the temperature of red mud modification,pH of wastewater,the ratio of red mud to wastewater,oscillation frequency and the dosage of manganese dioxide on the removal efficiency for Fe,Mn,Cu,Zn and Cd in mine wastewater.The result showed that red mud used in this study was fairly efficient.Optimum results were obtained with the parameter combination of a pH of 4.0,a temperature of 700 ℃ forred mud modification,a solid/liquid ratio of 50 g/L,an MnO2 dosage of 3 g/L,an oscillation frequency of 185 r/min and oscillation time of 1h,the removal efficiency being 99.86%,99.09%,93.62%,94.04% and 93.05,respectively,for Fe,Mn,Cu,Zn and Cd.

关 键 词：赤泥 煤矿酸性废水 去除效率 单因子试验 

分 类 号：X703[环境科学与工程—环境工程]