垃圾渗滤液性质特点及其变化规律的实验研究  

Study on chracteristics of landfill leachate and its variations

作　　者：韦旭[1] 冼萍[1] 冯庆革[1] 郑双金 

机构地区：[1]广西大学环境学院,广西南宁530004 [2]广西交通科学研究院,广西南宁530007

出　　处：《广西大学学报（自然科学版）》2011年第3期506-512,共7页Journal of Guangxi University（Natural Science Edition）

基　　金：广西科学研究与技术开发计划项目(桂科攻0816002-5);广西大学科研基金项目(XGL090020)

摘　　要：为广西区内垃圾填埋场地的设计、污染物的控制和治理提供理论依据及技术支持,通过生活垃圾模拟填埋实验,监测垃圾降解过程中垃圾体温度、沉降高度及渗滤液CODCr、BOD5、NH3-N等水质指标,研究垃圾渗滤液的降解变化规律。实验结果表明:在较短时间内垃圾渗滤液中的主要水质指标都达到最大值,CODCr为22 072 mg/L、BOD5为11 065 mg/L、NH3-N为1 615 mg/L。填埋后期垃圾渗滤液可生化性较差,BOD5/CODCr为0.1～0.2,C/N甚至小于1。这成为后期的渗滤液难以进行生物化学处理并无法达标排放的主要原因之一。本地较高的气温及较大的降雨量可提高填埋垃圾的降解速率,缩短填埋垃圾的稳定化时间。To aim at guiding and controlling landfill leachate treatment system in Guangxi in designing,operating and managing,the chracteristics of landfill leachate and its variations were studied through landfill simulation experiment.The temperature,deposit height of municipal solid waste and water quality of landfill leachate were monitored.The experiment results showed that most of water quality parameters of landfill leachate reached their maximum within 60 d of which CODCr was 22 072 mg/L,BOD5 was 11 065 mg/L,NH3-N was 615 mg/L.The biodegradability of landfill leachate at a later stage of experiment was weakened in which the ratio of BOD5/CODCr was 0.1~0.2 and ratio of C/N was less than 1.Due to the poor biodegradability of landfill leachate,the leachate was difficult to be treated by biochemical treatment and could not reach national standards.The local higher temperatures and conception of rainfall can improve the degradation rate of solid waste and shorten the stabilization time of landfill.

关 键 词：生活垃圾 垃圾渗滤液 水质特征 变化规律 

分 类 号：X799.3[环境科学与工程—环境工程]