摘要
自行研发的膨润土-钢渣复合颗粒是廉价高效矿物材料。通过探究其对Mn^(2+)的去除效果及pH变化规律,对比分析了复合颗粒、脱碱颗粒与单独加碱对Mn^(2+)的去除效果、现象及复合颗粒表面微观结构的SEM表征、XRD矿物相特征,探究其处理含Mn^(2+)酸性矿山废水的协同机理。结果表明,复合颗粒处理含Mn^(2+)废水不仅具有吸附、化学沉淀作用,且表面吸附Mn^(2+)并形成表面化学沉淀后还会继续吸附发生聚沉作用,Mn^(2+)在复合颗粒表面的赋存状态主要以Mn-Si-O相结合的矿物相及Ca Mn4Si5O14(OH)2聚合沉淀存在。
Self-developed bentonite-steel slag composite particles are cheap and efficient mineral materials. By investigating its removing effect on Mn^2＋and the changing law of pH, comparing and analyzing its removing effects of composite particles, de-alkaline particles and single addition of alkali on Mn^2＋, phenomena, and SEM characterization of the surface microstructure of the composite particles, as well as XRD mineral phase characteristics, its synergistic mechanism for treating acidic mine wastewater containing Mn^2＋has been further investigated. The results show that the composite particles treatment of wastewater containing Mn^2＋not only has adsorption and chemical settlement effects, but also continues to adsorb and has poly-settlement effect after having surface adsorption for Mn^2＋and forming surface chemical settlement. It means adsorption-polysettlement synergistic effect occurs. The occurrence of Mn^2＋on composite particles surface is mainly the occurrence of polysettlement of Mn-Si-O combined mineral phase and CaMn4Si5O（14）（OH）2.
作者
肖利萍
宋佳诺
王睿键
栾雪菲
刘喆
Xiao Liping;Song Jianuo;Wang Ruijian;Luan Xuefei;Liu Zhe(School of Civil Engineering,Liaoning Technical University ,Fuxin 123000, China)
出处
《工业水处理》
CAS
CSCD
北大核心
2018年第5期46-49,共4页
Industrial Water Treatment
关键词
含Mn^2+酸性矿山废水
复合颗粒
聚沉作用
acidic mine wastewater containing Mn^2＋
composite particles
polysedimentation effect
