徐州生活垃圾填埋场渗滤液有机污染动态分布规律研究  

Study on the dynamic distribution of organic pollution of landfill leachate in Xuzhou

作　　者：王敏 刘浩 王海棠 

机构地区：[1]徐州市环境监测中心站,江苏徐州221018

出　　处：《环保科技》2017年第6期25-31,共7页Environmental Protection and Technology

摘　　要：为了研究生活垃圾填埋场渗滤液有机污染动态分布规律,对徐州3个不同填埋龄的生活垃圾填埋场渗滤液同期进行VOCs和SVOCs监测分析;并选取1个典型填埋场在平、丰、枯3个水期进行监测分析。结果表明:(1)新垃圾渗滤液中可检测VOCs种类最多,且甲苯含量最高(2102μg/L);新老渗滤液中可定量的VOCs种类也相对较多,苯酚含量最高(38μg/L);老渗滤液中可定量VOCs种类较少且含量均远低于新和新老渗滤液。(2)新老渗滤液中可监测并可定量的SVOCs种类最多,新的次之,老的最少;但新渗滤液中可定量SVOCs的含量均相对较高,其中邻苯二甲酸(2-乙基己基)酯含量最高,新的分别是新老和老的1.7和213倍,主要与塑料垃圾增长有关。(3)邻苯二甲酸二(2-乙基己基)酯、邻苯二甲酸二正丁酯和甲苯季节分布规律较明显,均为枯水期渗滤液含量最高,平水期次之,丰水期最低。邻苯二甲酸二(2-乙基己基)酯、邻苯二甲酸二正丁酯和甲苯枯水期含量分别为丰水期的22.4、4.4和15.0倍,平水期的15.2、3.6和5.4倍。研究认为:老渗滤液中VOCs含量低主要与挥发及生化反应消解有关;新渗滤液中邻苯二甲酸(2-乙基己基)酯和邻苯二甲酸二正丁酯含量均较高,主要与生活垃圾增塑剂含量增大有关;枯水期邻苯二甲酸二(2-乙基己基)酯、邻苯二甲酸二正丁酯和甲苯含量均相对较高,主要与缺少降水稀释、酯类消散性弱、低温不利于甲苯挥发有关。In order to study the dynamic distribution of organic pollution of the landfill leachate,we carried out the monitoring of VOCs and SVOCs of landfill leachate in three different landfills at the same time,and selected one typical landfill for monitoring in wet,normal and dry seasons in Xuzhou.The research shows that : 1) in the new landfill leachate,the number of detectable VOCs is the most,and the concentration of toluene is the highest(2102 μg/L).The number of quantifiable VOCs in the mix of old and new leachate is relatively high,and the content of phenol is the highest(38μg/L).In old leachate,quantifiable VOCs species are less and the content is much lower than that in the new and mixed leachate.2) The species of SVOCs that can be monitored and quantified in the mix of new and old leachate are the most,followed by in the new and the old leachate.However,the content of SVOCs in the new leachate is relatively high,among which,phthalic acid(2-ethyl Hexyl)ester content is the highest,being 1.7 and 213 times of that in the mix and the old leachate,this is mainly related to the growth of plastic garbage.3) The seasonal distribution of phthalic acid(2-ethyl hexyl) esters,dibutyl phthalate and toluene is obvious.The content of leachate is the highest in the dry season,followed by the flat water and the lowest in the wet season.The content of phthalic acid(2-ethyl hexyl) esters,dibutyl phthalate and toluene in dry period were 22.4,4.4 and 15.0 times of the wet season and 15.2,3.6 and 5.4 times of the flat water,respectively.The results show that the low content of VOCs in old leachate is mainly due to volatilization and biochemical reaction digestion.The content of phthalic acid(2-ethyl hexyl) esters and dibutyl phthalate in the new leachate is high,which mainly is related to the increase of plasticizer content in domestic waste.During the dry period,the content of phthalic acid(2-ethyl hexyl) esters and dibutyl phthalate and toluene are relatively high,mainly due to the lack of precipitation dilution,weak dissipatio

关 键 词：不同填埋龄 生活垃圾渗滤液 VOCS SVOCs 动态分布规律 

分 类 号：X705[环境科学与工程—环境工程]