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Abstract
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Article Information:
Groundwater Quality Assessment near a Municipal Landfill, Lagos, Nigeria
E.O. Longe and M.R. Balogun
Corresponding Author: Ezechiel Longe
Submitted: 2009 September, 18
Accepted: 2009 October, 08
Published: 2010 January, 05 |
Abstract:
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The current research examined the level of groundwater contamination near a municipal landfill site
in Alimosho Local Government Area of Lagos State, Nigeria. Water quality parameters (physico-chemical and
heavy metals) of leachate and groundwater samples were analyzed. The mean concentrations of all measured
parameters except NO3-, PO4+ and Cr- conform to the stipulated World Health Organization potable water
standards and the Nigerian Standard for Drinking Water Quality. Mean concentration values for TDS, DO,
NH4+, SO4+, PO4+, NO3- and Cl- are 9.17 mg L-1, 3.19 mg L-1, 0.22 mg L-1, 1.60 mg L-1, 10.73 mg L-1, 38.5 mg L-1 and 7.80 mg L-1 respectively. The mean concentration values for Fe, Mn, Zn and Cr- in groundwater
samples are 0.07mg L-1, 0.08mg L-1, 0.08mg L-1 and 0.44mg L-1 respectively. The current results show insignificant impact of the landfill operations on the groundwater resource. The existing soil stratigraphy at
the landfill site consisting of clay and silty clay is deduced to have significantly influenced natural attenuation
of leachate into the groundwater resource. It is however observed that in the absence of a properly designed
leachate collection system, uncontrolled accumulation of leachates at the base of the landfill pose potential
contamination risk to groundwater resource in the very near future. The research recommends an upgrade of
the solous landfill to a standard that would guarantee adequate protection of both the surface and the
groundwater resources in the locality.
Key words: Contamination, groundwater, leachate, municipal, quality, stratigraphy,
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Cite this Reference:
E.O. Longe and M.R. Balogun, . Groundwater Quality Assessment near a Municipal Landfill, Lagos, Nigeria. Research Journal of Applied Sciences, Engineering and Technology, (1): Page No: 39-44.
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ISSN (Online): 2040-7467
ISSN (Print): 2040-7459 |
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