Controlled Landfills | Drawbacks
As a result of treatment received reduces the environmental impact of uncontrolled dumping. By coating the waste with soil reduces the proliferation of pests and odor emissions. Since there is no uncontrolled waste burning reduces air pollution. However, there are still many drawbacks:
1. Occupation of the territory. Landfills occupy large tracts of land relatively close to urban centers. By some estimates the waste produced by a population of 10,000 people a year would occupy an area of ??one hectare to 1.2 m deep. The greater the distance increases transport costs increase proportionately and emissions of greenhouse gases produced in transport.
2. Landfills often occupy valuable ecosystems. Occasionally, moist areas of high ecological value have become landfills.
3. Landfills require large excavations and earthworks that consume large amounts of energy.
4. Leachate is produced, which are liquids of varying composition and decomposition product are mobilized by the action of rainwater that infiltrates into the landfill and must be evacuated and treated to prevent contamination of groundwater.
5. In landfills produces methane is the result of anaerobic decomposition of organic materials as the materials are buried. There is a risk of explosion must be avoided capturing the resulting gases. In addition, methane is one of those responsible for the greenhouse effect.
6. It is a waste of resources that could re-enter the production system and whose transformation represents a considerable savings in raw materials, energy and environmental impact of extraction result.
7. Landfills generate a very high social rejection. They are a source of discomfort for people all noise, pollution, visual impact, and so on.
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