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Potential impacts on the environment |
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University of Padua IMAGE Department |
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Environmental impact in landfills |
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Types of landfills Open dumps An open dump is an uncontrolled land disposal site. Disposal at these sites is gradually being phased out in many countries and replaced by disposal in sanitary landfills. In countries like Thailand and India, 70%-90% of the final disposal sites are still open dumps Hogland W. et al., 2005). As cities grow, the few existing landfills are filled up quickly and the lenght of time it takes to develop a new landfill frequently results in a return to open dumping. |
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Sanitary landfill A sanitary landfill is a site where waste is isolated from the environment through engineering procedures, and where emissions such as leachate and gases are properly collected and treated. |
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Minimizing environmental impacts The environmental aspects related to a sanitary landfilling are versatile, ranging from local nuisance to be abated by a tidy operation of the site, to the potential contamination of regional groundwater resources by migrating leachate While many of the environmental aspects may be minimized by current technology, the long term aspects of gas and leachate still raise questions about the appropriation of the current technology Meeting todays need for landfill capacity, acceptable environmental impacts of a sanitary landfill can be obtained only if the environmental aspects are paid proper attention at all stages and phases of a landfill (siting, design, construction, operation and maintenance) |