渗滤液回灌在实际应用中应注意的问题  

Problems of Leachate Recirculation in Practice

作　　者：李青松[1] 金春姬[2] 乔志香[2] 向勇[2] 

机构地区：[1]同济大学污染控制与资源化国家重点实验室,上海200092 [2]中国海洋大学环境科学与工程学院,山东青岛266003

出　　处：《四川环境》2004年第4期78-80,84,共4页Sichuan Environment

基　　金：国家自然科学基金资助项目(20307009)

摘　　要：本文介绍了垃圾填埋场渗滤液回灌的机理、优缺点,"干填埋"与"湿填埋"之间的区别。渗滤液回灌可增加填埋废物的含水率,加快垃圾的降解速率,减少渗滤液的处理时间,提高填埋气中甲烷的含量,加速填埋场稳定化进程。鉴于以上这些优点,渗滤液回灌作为一种渗滤液处理方式将会有极大的应用前景。但在实际应用中回灌的渗滤液容易泄漏而导致地下水污染,这是影响渗滤液回灌广泛应用的主要原因。为了避免使地下水受污染,本文总结和分析了渗滤液回灌在实际应用中应注意的问题。This article introduced leachate recirculation in MSW landfills,as well as the differences between 'wet tomb' and 'dry tomb'. Advantages and limitations of leachate recirculation in MSW landfills are also introduced . With recirculation of leachate to MSW landfills, moisture of solid waste becomes higher, which enhances degradation of solid waste.The advantages of leachate recirculation include reducing period of leachate treatment, increasing methane production,and accelerating landfill stabilization. There is a risk that the leachate will leak out of the landfill during its recirculation.The leaked leachate can give rise to groundwater contamination which prevents leachate recirculation from being used widely. In order to avoid groundwater contamination this article also introduces some rules that should be paid attention to when leachate recirculation is used in practice.

关 键 词：渗滤液 回灌 生物反应器 地下水污染 

分 类 号：X5[环境科学与工程—环境工程]