A landfill is defined as a legally authorized site where municipal waste is deposited and sorted for subsequent burial.
The site of a landfill must be large and must be prepared before use in order to prevent contaminants from seeping into the ground.
The general steps to follow are as follows: Soil compaction; installation of a high-density polyethylene liner; gravel filters; and layers of soil. When a landfill reaches the end of its service life, it is backfilled with a gravel filter, geotextile, high-density polyethylene liner, geotextile, gravel filter, geotextile, and finally, a layer of soil.
This is the final step to consider, and it should only be justified when the previous steps (thermal recycling and mechanical recycling) have been exhausted.
Energy Content of Different Plastics

