我国填埋渗滤液产量影响因素分析及估算方法构建  

Impact factor analysis and quantification method establishment for landfill leachate generation in China

作　　者：杨娜[1,2] 何品晶[1] 吕凡[1] 章骅[1] 邵立明[1] 

机构地区：[1]同济大学固体废物处理与资源化研究所,上海200092 [2]深圳市环境科学研究院,广东深圳518001

出　　处：《中国环境科学》2015年第8期2452-2459,共8页China Environmental Science

基　　金：国家重点基础研究发展计划资助项目(2012CB719801)

摘　　要：在综述已有研究结果的基础上,构建了适合我国国情的渗滤液产量估算方法,根据来源将渗滤液概化为降水和垃圾自产水2部分.采用HELP模型获得31个典型城市气候特征下的渗出系数取值;按照产生原理,垃圾自产水分为压缩产水和降解产水,分别建立估算公式并给出田间持水率和组分降解率的取值建议.应用此方法,估算了10个城市的填埋渗滤液产生量.发现在填埋40a内,垃圾自产水占渗滤液总量的52%～82%,说明垃圾自产水的贡献不可忽视.我国不同地区的降水渗出系数和生活垃圾性质差异,使得填埋渗滤液产量具有显著的地域差异性,在选择渗滤液处理方式时应因地制宜。To reflect specific conditions in China, this study established a method to estimate landfill leachate amounts in two sources： infiltrated precipitation and water squeezed from waste. A hydraulic model （i.e. HELP） was used to obtain the precipitation infiltration factors for 31 typical Chinese cities. The calculation method for water squeezed from waste by compaction and degradation was set up based on theoretical analysis, and the key parameters--field capacity and degradation percentage--were acquired by literature mining. According to this method, landfill leachate quantities in 10 Chinese cities were calculated. Water squeezed from waste accounted for 52%-82% of the total leachate amounts during 40 years after landfilling, implying its importance in Chinese municipal landfills. Leachate generation amounts showed significant spatial variations due to the different precipitation infiltration factors and waste properties. Hence, leachate treatment measures should be selected according to its generation amounts rather than using certain general method.

关 键 词：城市生活垃圾(MSW) 卫生填埋 渗滤液产生量 降水渗出系数 初始含水率 

分 类 号：X705[环境科学与工程—环境工程]