Assessment of landfill leachate in Nam Son, Hanoi using 3D electrical imaging and self-potential data


  • Van Giang Nguyen* Institute of Geophysics, VAST
  • Quang Dung Nguyen Ho Chi Minh City Institute of Resources Geography, VAST
  • Ba Duan Nguyen Institute of Geophysics, VAST


contaminant plume, electrical imaging, fluid conductivity, landfill leachate, self-potential


The main objective of this study was to assess the environmental impact of the Nam Son landãll on the subsurĩace geological structure studied using 3D electrical imaging and self-potential investigations. The map of the equipotential was based on self-potential data and was indicative of concentrations of redox-active components, and the map of the electrical conductivity provided intormatỉon about the mineralỉzation of the groundwater. The electrical conductivity of the subsurface was obtaỉned from 3D-electrical imaging analysis conducted using a Wenner-based array conhguration. An ỉnversion of the data was carried out using 3D regularixed least-squares optimization methods with robust model constraints. Three prohles of 3D electrical imaging and 180 setf- potential data points, scattered within the study area near the disposal site, were implemented. The self-potential method supports the results of the geoelectrical method relating to a contaminated zone in the survey area with a large negative seư-potential anomaly of ~-260 mV with respect to the reĩerence of a contamỉnant plume. Interpretations of geophysical data showed a low resistivity zone (<10 Í2 m), which appeared to be a íiilly saturated zone with leachate from the Nam Son open dumpsite. The correlation between geophysical investigations and hydrochemical analysis proved to show high conductivity zones related with landbll leachate.


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Received 10 March 2017; accepted 25 August 2017

How to Cite

Van Giang Nguyen, Quang Dung Nguyen, & Ba Duan Nguyen. (2017). Assessment of landfill leachate in Nam Son, Hanoi using 3D electrical imaging and self-potential data. Vietnam Journal of Science, Technology and Engineering, 59(3), 71-78.



Earth Sciences