| 膨润土研究现状及其作为PRB反应介质的探讨 |
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| 引用本文： | 杨维,杨军锋,王立东,王虎,郭毓.膨润土研究现状及其作为PRB反应介质的探讨[J].地质与资源,2007,16(2):155-160. |
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| 作者姓名： | 杨维 杨军锋 王立东 王虎 郭毓 |
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| 作者单位： | 沈阳建筑大学 市政与环境工程学院, 辽宁 沈阳 110168 |
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| 基金项目： | 辽宁省教育厅重点实验室开放基金项目(编号HJ-200611)资助. |
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| 摘 要： | 在阐述膨润土的矿物学特性、类型及其改性方法（包括酸活化、焙烧、无机盐，有机铵盐）的基础上，探讨了其在废水处理、垃圾填埋场和土壤改良中的应用现状，并以膨润土作为反应介质，COD（化学需氧量）、Cr6+和NH4+为靶污染物，进行垃圾渗滤液对地下水污染的渗透反应格栅（PRB）实验研究，结果表明：pH值和DO（垃圾渗滤液中的溶解氧）对靶污染物的去除效果有一定的影响，且反应介质对COD、Cr6+和NH4+的去除率分别为53%、51%和53%，此结果说明了以膨润土作为PRB的反应介质是可行的.
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| 关 键 词： | 膨润土 靶污染物 PRB 反应介质 |
| 文章编号： | 1671-1947（2007）02-0155-06 |
| 收稿时间： | 2006-08-22 |
| 修稿时间： | 2006-08-222006-10-23 |
BENTONITE AS A REACTING MEDIUM OF PRB: Current research situation and discussion |
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| YANG Wei,YANG Jun-feng,WANG Li-dong,WANG Hu,GUO Yu.BENTONITE AS A REACTING MEDIUM OF PRB: Current research situation and discussion[J].Geology and Resources,2007,16(2):155-160. |
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| Authors: | YANG Wei YANG Jun-feng WANG Li-dong WANG Hu GUO Yu |
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| Institution: | College of Municipal and Environmental Engineering, Shenyang University of Architecture, Shenyang 110168, China |
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| Abstract: | Based on the introduction to the mineralogical types and characters of bentonite,as well as its modification methods,including acid activation,roasting,inorganic salt adding and organic ammonium salt adding,this paper elaborates the present status of application of this mineral in wastewater treatment,garbage landfill site and amelioration of soils. Using bentonite as a reacting medium of permeable reacting barrier (PRB),the changing situation of groundwater pollution is simulated for landfill filtration liquid,with COD,sexivalent chromium and ammonium as target contaminants. The experiment shows that the pH and DO values have a certain influence on the removal efficiency of target contaminants. The removal rates of COD,sexivalent chromium and ammonium are 53% ,51% and 53% respectively,through the reacting medium. The result suggests the feasibility of bentonite as reacting medium of PRB. |
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| Keywords: | bentonite target contaminants PRB reacting medium |
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