膨润土-钢渣复合材料处理含Zn^(2+)酸性矿山废水  

Bentonite-slag Composite for Treatment of Acid Mine Wastewater Containing Zn^(2+)

作　　者：肖利萍[1] 刘燕[1] 裴清煌 白际驰[1] 

机构地区：[1]辽宁工程技术大学建筑工程学院,辽宁阜新123000

出　　处：《非金属矿》2015年第3期80-82,共3页Non-Metallic Mines

基　　金：国家自然科学基金(51174267;51474122;51404133);辽宁省"百千万人才工程"项目(2009921106);辽宁省高校科研立项计划项目(2008300)

摘　　要：通过震荡吸附试验,对比研究膨润土、钢渣、膨润土-钢渣复合粉末状材料、膨润土-钢渣复合颗粒材料对含Zn2+酸性矿山废水处理效果,确定最佳吸附材料及其最佳反应条件,结果表明:8∶2膨润土-钢渣复合粉末状材料对含Zn2+的酸性矿山废水处理效果最好;对于p H值为3~4、Zn2+质量浓度为50 mg/L的酸性矿山废水,当复合吸附剂用量为7 g/L、吸附时间为120 min时,对酸性矿山废水中Zn2+去除率可达98.43%,处理后水的p H值为7.8,可达标排放;膨润土-钢渣复合材料既释放碱度中和酸,同时又对Zn2+发生了吸附、沉淀、絮凝聚沉协同作用。Comparative study was conducted using shake adsorption test with particle composites, including bentonite, slag, and powder- like bentonite-slag material, for treatment of acid mine wastewater containing Zn2＋; the optimum adsorption material and best reaction condition were determined. Results showed that powder-like bentonite-slag material performed best. For acid mine wastewater with pH value of 3 to 4 and concentration of 50 mg/L, the removal ratio could reach 98.43% when adsorption agent dose was 7 g/L and adsorption time was 120 min; The pH value of treated water was 7.8 and met discharge standard. It was revealed that bentonite-slag material could release alkali to neutralize acid, and at the same time adsorb, precipitate and flocculate Zn2＋.

关 键 词：膨润土 钢渣 含Zn2+酸性矿山废水 吸附 沉淀 协同作用 

分 类 号：X703[环境科学与工程—环境工程] TD985[矿业工程—选矿]