渗滤液回灌对填埋垃圾含水率的影响研究  

Effect of Leachate Recirculation on Moisture Content of Waste in Bioreactor Landfill

作　　者：李启彬[1] 刘丹[1] 欧阳峰[1] 

机构地区：[1]西南交通大学环境科学与工程学院,成都610031

出　　处：《环境科学与技术》2007年第7期20-22,共3页Environmental Science & Technology

摘　　要：文章通过模拟实验研究了不同的渗滤液回灌频率、回灌量和回灌速率对压实密度不同的垃圾的含水率的影响。研究表明,由于通道流的存在和影响,渗滤液的产生时间提前于填埋垃圾达到其有效贮水率的时间;渗滤液回灌频率越高、回灌量越大、回灌速率越慢、垃圾体温度越低、垃圾压实密度越高,则填埋垃圾的有效贮水率越大、含水率越高。在实施渗滤液回灌操作时,须综合考虑滤液回灌频率、回灌量、回灌速率、垃圾温度和垃圾压实密度等影响因素。Leachate recirculation is the most important measure in bioreactor landfill to keep appropriate moisture content and accelerate the degradation and stabilization of waste.By means of simulated experiment,the effect of different recirculation frequency,quantity and rate on the moisture content of waste at different waste density was studied.Results showed that before the moisture content of waste reached its effective storage,the leachate was produced due to channel flow of recirculated leachate.It was also shown that the effective water storage capacity and moisture content was increased with the higher recirculation frequency,the more recirculated leachate quantity and the lower recirculation rate.The influence factors including leachate recirculation frequency,quantity,rate,temperature and waste density must be considered in the operation of leachate recirculation.

关 键 词：生物反应器填埋场 渗滤液回灌 含水率 有效贮水率 

分 类 号：X131.3[环境科学与工程—环境科学]