Abstract
In Nigeria, the reliance on sanitary landfills is a common phenomenon in the disposal of waste materials. Lack of capital and appropriate technology for environmentally friendly waste management practices has left most places like Osogbo city in Nigeria to rely of landfills for solid waste disposal. And in most cases the landfills are not properly engineered and operated to accepted world standards. This project work assesses the effect of solid waste dumpsite on the ground water quality in Osogbo and Ede Metropolis. Eight (8) different samples were collected from wells located around the vicinity of dumpsite at Osogbo and Ede respectively. The analysis of physical, chemical and bacteriological parameters of the water samples collected shows that there are some level of contaminations on the ground water within the solid waste dumpsite and some of the samples were discovered to be acidic with PH ranges from 5.90-6.40 which rendered the sample unsafe for drinking and other domestic consumptions. Parameters like Iron, Manganese, Chromium, Copper, Zinc, are trace elementand were found in minute amounts concentration of less than 100mg/l in all the water samples, which possessed no hazard effect to the quality of groundwater. However, most of the water sample tested for bacteriological does not fall within WHO 2006 recommendations.Therefore, the need for environmental awareness through enlightenment campaigns on solid waste handling, controlling and monitoring techniques with proper groundwater exploration for proper analyses.
Highlights
Wastes are materials that are not prime product for which the initial user has no further use in terms of his/her own purposes of production, transformation or consumption and of which he/she wants to dispose
Results obtained from the coordinates and distances of points of samples collection to dumpsite, Physical parameters, Chemical analysis and Bacteriological test were compared with World Health Organization (WHO) standard as presented in Tables[1,2,3,4,5,6,7,8,9] respectively
Calcium Hardness The Calcium hardness for the water samples varies from 84.00-102.00 mg/l for samples collected from Ede and 84.00-192.00 mg/l for samples collected from Osogbo which falls within the 200mg/l maximum permissible level for WHO2006 standard(UNICEF, 2009) as presented in Appendix I
Summary
Wastes are materials that are not prime product (that is product produced for the market) for which the initial user has no further use in terms of his/her own purposes of production, transformation or consumption and of which he/she wants to dispose. Coupled with the lack of capital and appropriate technology for environmentally friendly waste management practices has left most state governments like Osunrelying on the use of landfills for solid waste disposal. He concluded that solid waste management is characterized by inefficient collection methods, insufficient coverage of the collection system and improper disposal. Literature is sparse on the impact of these sanitary landfills on underground water In view of this fact, this study will focus on the effects of solid waste dumpsite on ground water in Osogbo and Ede metropolis of Osun State of Nigeria. The population is put at 156,866 according to the 2006 Population Census
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