An ERT study on domestic waste biodegradation under different conditions
One of the most difficulties in monitoring and operating the landfill bioreactor is the time lapse and space-continuous measurement of parameters. Electrical Resistivity Tomography (ERT) can provide some valuable information for landfill bioreactor with the advantages of noninvasive, time-lapse, and space-continuous measurement. Electrical resistivity is property, which is linked to porosity, moisture and ionic content and can provide useful indications on the waste degradation processes. In this paper, the processes of waste degradation in the initial two months under different bio-conditions in laboratory were researched based on ERT, and the electrical resistivity variations and the main influence factors were analyzed. The initial distributions of electrical resistivity reflect the characteristics of waste material, porosity, and water content. As the degradation of waste, for the aerobic bioreactor, the bulk electrical resistivity decreased largely because of the high water and ionic content during the primary water adding. However, continuing tap water adding decreased the leachate conductivity. Therefore the bulk electrical resistivity increased though the water content remained unchanged. For the semi-aerobic bioreactor and anaerobic bioreactor, the variations in electrical resistivity kept pace with that in settlement and leachate conductivity. The result shows that ERT is a valuable tool to monitor the waste degradation.
Electrical Resistivity Tomography (ERT) Bioreactor Waste degradation
Chengpeng LING Yuwei XUE Yuanyuan ZHANG Rui LI Jianguo LIU Qiyou ZHOU
Department of Hydrosciences, Nanjing University, Nanjing 210093, China Department of Environmental Science and Engineering, Tsinghua University,Beijing 100084, China
国际会议
北京
英文
1130-1136
2010-05-17（万方平台首次上网日期，不代表论文的发表时间）