生活垃圾填埋场填埋气中汞的分布特征  

The Characteristics of Total Gaseous Mercury in the Municipal Solid Waste Landfill Gas

作　　者：刘阳[1] 郝永霞[1] 柴晓利[1] 

机构地区：[1]同济大学污染控制与资源化研究国家重点实验室,上海200092

出　　处：《生态毒理学报》2014年第5期950-955,共6页Asian Journal of Ecotoxicology

基　　金：国家自然科学基金(No.51278357)

摘　　要：利用Tekran 2537A和Lumex RA-915汞分析仪分别对生活垃圾填埋场排气筒、填埋场内部的气态总汞变化规律进行了分析,结果表明,填埋场排气筒中气态总汞含量呈现明显的昼夜变化规律,白天高于夜间,并于午间达到峰值。气象条件对汞的释放过程有重要影响,光照强度与排气筒中气态总汞含量的相关性明显。受填埋场内部物理、化学、生物作用的影响,填埋场内部填埋气的汞浓度明显高于排气筒中填埋气的汞浓度。填埋场内部气态总汞变化规律为:植被覆盖区域明显低于无植被覆盖区域,表明有效的绿化措施对于控制填埋场汞污染具有重要意义。Total gaseous mercury （TGM）of landfill gas was investigated by Tekran 2537A and Lumex RA-915 mercury analyzers.The results indicated that TGM concentrations in the landfill vent pipes changed greatly with daytime and reached the maximum near midday.The mercury released from the vent pipes was affected by weather conditions and close relationship was found between light intensity and TGM.The TGM concentrations of internal landfill gas was significantly higher than that of the landfill vent pipes due to different physical,chemical and biological condition in the landfill.Lower TGM concentration in vegetation covered landfill suggested that vegetation provide an efficient mercury pollution control technology in landfill.

关 键 词：生活垃圾填埋场 气态总汞 填埋气 植被 

分 类 号：X171.5[环境科学与工程—环境科学]