文献类型：会议论文

中文题名：Earth-electricity Model of High Voltage DC Landfill Leakage Detection

作者：YANG Ping;REN Liying;WU Jingjing;NENG Changxin

第一作者：杨萍

机构：[1]School of Information,Beijing Union University,Beijing 100101,China;[2]Chinese Research Academy of Environmental Science,Beijing 100012,China;

第一机构：北京联合大学智慧城市学院

会议论文集：2009 International Symposium on Environmental Science and Technology(2009环境科学与技术国际会议)论文集

会议日期：20090602

会议地点：上海

主办单位：中国环境科学学会

语种：英文

中文关键词：HDPE liner;leak detection;electrolytic capacitor

摘要：The method of high voltage DC in landfill leakage detecting is widely accepted in many developed countries, but the theory of this method is trailed its application. In the earth-electricity model of the high voltage DC method, there will be formed a conductive membrane similar to PN junction, and make the model possess commutated character at the contacted surface, because of the full contact between the HDPE (High Density Polyethylene) liner and the earth. In this paper, the formation of the electrolytic capacitor and its conductive mechanism will be fully discussed by experimental analysis, and point out the capacitance increases as the liner area and supply power increases. The equivalent circuit of high voltage DC method about the earth-electric model is pointed out. The simulated physics test demonstrated the electrical characteristic of the equivalent circuit is same to the landfill.