运用Cl^-示踪研究回灌渗滤液的运移特性  

Study on the Movement Characteristics of Recirculated Leachate by Cl^- Tracer Experiment

作　　者：李启彬[1] 刘丹[1] 

机构地区：[1]西南交通大学环境科学与工程学院,四川成都610031

出　　处：《安徽农业科学》2010年第4期1987-1989,共3页Journal of Anhui Agricultural Sciences

基　　金：铁道部科技研究开发项目(2005Z007)

摘　　要：通过模拟垃圾柱进行Cl-示踪试验,比较研究回灌渗滤液的运移特性和垃圾密度、厚度对其运移的影响。结果表明,渗滤液回灌后,分别以通道流和基质流2种流态运移,且在运移过程中不断与填埋垃圾中固有水分进行混合和交换,回灌渗滤液的流出是一个较长的过程;填埋垃圾压实密度和厚度越小,通道流作用越显著,示踪溶液和填埋垃圾中固有水分间的交换和混合作用越不明显。在实施渗滤液回灌的生物反应器填埋场中,应保证填埋垃圾的压实密度和厚度。Based on the Cl-tracer experiment,the movement characteristics of recirculated leachte and the effect of density and height of waste on it were studied.It was shown that after leachate recirculation,the movement mode of leachate included channel flow and matrix flow;In the course of movement,recirculated leachate blended and exchanged with leachate inherent water in waste,and all of them which washed out from waste would take a long time.The smaller density and height of waste,the more significant the effect of channel flow was,the more unconspicuous the effect of recirculated leachate blended and exchanged with leachate inherent water in waste was.It should be done to increase the density and height of waste in a bioreactor landfill which adopted leachate recirculation.

关 键 词：生物反应器填埋场 渗滤液回灌 运移特性 示踪试验 

分 类 号：X703[环境科学与工程—环境工程]