Developing Resistivity Contouring and Plume Mapping of Landfill Leachate Using Electrical Resistivity Method in Warri Metropolis | Chapter 4 | New Ideas Concerning Science and Technology Vol. 6

 The movement of municipal solid waste landfill leachate at the Niger-Cat, Donparkar, and Orhuwhorun dump sites in Warri Metropolis, Southern Nigeria, was studied using the electrical resistivity technique. Landfilling is still the most cost-effective and widely used method of disposing of municipal solid waste (MSW) in both developed and developing countries. Schlumberger array setup was used for both Electrical Resistivity Profiling and Vertical Electrical Sounding (VES). The software packages Surfer 10 and ArcGIS 10.3 were used to interpret resistivity profiling data and make apparent resistivity contour maps of study sites, while the VES data was interpreted using the IPI2Win software package. This computer programme computed the true layer parameters of the geo-electric section by automatically generating model curves using initial layer parameters (resistivity and thickness) obtained from partial curve matching of the field curves with standard curves. The findings showed that leachate had migrated from the dump into the surrounding soil at the Niger-Cat dump site, and contamination had progressed up to a depth of 19.12m, which is within the area's local groundwater system. The findings from the Don-Parkar dump site showed that leachate had migrated into the surrounding soil around the edges of the dump site, and contamination had progressed to a depth of more than 20.7 metres. The resistivity contour map at the Orhuwhorun dump site revealed leachate migration to the south of the dump; however, VES findings showed no contamination, indicating that groundwater in the area is currently safe. Waste managers must use engineered sanitary landfills to dispose of solid waste, and government policy should address this issue to help protect the area's groundwater resources.

Author (s) Details

Mamuyovwi Odia
Centre for Occupational Health, Safety and Environment, University of Port Harcourt, Nigeria.

Ify L. Nwaogazie
Centre for Occupational Health, Safety and Environment, University of Port Harcourt, Nigeria.

Gregory O. Avwiri
Department of Physics, University of Port Harcourt, Nigeria.

Eunice O. Nwachukwu
Department of Plant Science and Biotechnology, University of Port Harcourt, Nigeria.

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