Controlled Landfills
Once all the other treatments there is still a fraction of the waste called rejection, which could not be recycled or recovered, and whose final destination is the landfill.
A sanitary landfill is considered controlled when taking measures to avoid to be harmful, disruptive or cause damage to the environment.
Depression consists of a natural or artificial terrain in which are dumped, compacted and covered with soil daily accumulated debris. Basically it is a biological treatment of waste.
In the absence of oxygen, anaerobic decomposition produces the same as organic matter degrades more stable forms and leads to the formation of biogas, a mixture of gases among which methane. Depending on how waste disposal and ground covering, what is the degree of compaction, there are three types of landfills:
- Low density.
- Medium density.
- High density.
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