The influence of local hydrogeology on natural attenuation of contaminants from landfill leachates in shallow aquifer underlying the active Olusosun landfill base in Lagos was investigated. In addition, the level of groundwater contamination in the vicinity of the landfill and of leachate migration pattern in groundwater down gradient of the landfill base was equally assessed. Landfill leachate and groundwater samples were collected and analyzed and characterized. Physico-chemical analyses of sampled water followed standard analytical methods. Analytical results showed a measurable impact of leachate outflows on groundwater quality. Elevated levels of anions: nitrate, chloride and sulphate in the groundwater body and heavy metals: Cr3, Cd and Cu, were detected at measurable levels in groundwater down gradient of the landfill location without any particular attenuation pattern. The migration pattern and dispersion of leachates down gradient, 750 m away from the landfill location are irregular and difficult to predict as depicted by levels of contaminants present in groundwater. The study highlighted the importance of soil stratigraphy beneath the landfill base as an important factor in the natural attenuation of leachate constituents in the groundwater body.
Baedecker, M.J., Back, W., (1979). Hydrogeological processes
and chemical reactions at a landfill. Ground Wat., 17, 429-437 (9 Pages)
2.
Bagchi, A., (1989). Design, construction and monitoring of
sanitary landfill. John Wiley & Sons, New York.,
3.
Chapman, D., (1992). Water quality assessments. A guide to
the use of biota, sediments and water in environmental
monitoring.. UNESCO/WHO/UNEP, Chapman & Hall, London. , 371-460 (90 Pages)
4.
Christensen, T.H., Kjeldsen, P., Bjerg, P.L., Jensen, D.L.,
Christensen, J.B., Baun, A., Albrechtsen, H.J., Heron, G., (2001). Biogeochemistry of landfill leachate plumez. Appl. Geochem., 16 (7-8), 659-718 (60 Pages), DOI: 10.1016/S0883-2927(00)00082-2. Abstract | Full Text (3022 K)
5.
Coode B., (1997). Hydrogeological investigation of Lagos
State. Final report, volume 1 submitted to Lagos State Water Corporation.,
6.
Lavalin., (1992). Organizational development and waste
management system project. Design and operations report for the Oregun landfill site submitted to the Lagos State Waste Disposal Board.,
7.
Lee, G.F., Jones Lee, A., (2005). Public health, groundwater resource and environmental protection from MSW leachate
pollution by single and double composite lined dry tomb landfills. - Abstract
Lee, G.F., Jones-Lee, A., (1993b). Groundwater pollution by municipal landfills: Leachate composition, detection and water quality significance,. Sardinia, Italy International Landfill Symposium, Sardinia, Italy., , 1093-1103 (11 Pages)Abstract
10.
Lee, G.F., Jones-Lee, A., (1993a). Revisions of state of MSW
landfill regulations: Issues in groundwater quality.. J. Environ. Manag. Rev., 29, 32-54 (23 Pages)
11.
Longe, E.O., Kehinde M.O., (2005). Investigation of potential groundwater impacts at an unlined waste disposal site in
Agege, Lagos, Nigeria. Proc. 3rd. Faculty of Engineering International Conference, University of Lagos , Lagos., , 21-29 (9 Pages)
Recommend
E-Alert
Order Journal
Track your article)
Volume 10 (2013)
Top of Page