Investigation of Leachate Migration from Banwuya Public Refuse Dump Site, Bida, Niger State, Nigeria.

Abstract

Geophysical study involving electrical resistivity was conducted at Banwuya municipal solid waste disposal site in Bida metropolis, Niger state North central Nigeria. Two resistivity profiles both inside the dump and one profile outside the dump to serve as control were investigated with maximum length of 80m. Results of the resistivity showed the leachate plume as low resistivity zones (4.06 – 48.5 Ωm). The resistivity values obtained for area without dump showed higher values which suggests that the low resistivity observed inside the dump might have responsible for that. Results of the physico-chemical analysis of water samples from existing hand dug wells samples reported elevation in concentration of some of the measured parameters (Cadmium 0.0582 = 0.0841 mg/l, Chromium 0.1597 – 1.5000 mg/l, Manganese 0.5875 – 0.875 mg/l indicating contamination of the groundwater as a result of solid waste leachate accumulation, consequently, complementing the geophysical data.