Landfill liner

Landfill liner

A landfill liner, or composite landfill liner is intended to be low permeable barrier which is laid down under engineered landfill sites. Until it deteriorates, the liner retards migration of leachate, and its toxic constituents, into underlying aquifers or nearby rivers causing spoiling of the local water.

Modern landfills generally require a layer of compacted clay with a minimum required thickness and a maximum allowable hydraulic conductivity overlaid by a high density polyethylene geomembrane.

The US EPA has stated that the barriers "will ultimately fail," while the site remains a threat for "thousands of years," suggesting that modern landfill designs delay but do not prevent ground and surface water pollution.

Waste tires or chipped tires are used as a supporting component insulating the liner. [Benson, C. H., Olson, M. A. & Bergstrom, W. R. (1996) [http://pubsindex.trb.org/document/view/default.asp?lbid=468017 Temperatures of Insulated Landfill Liner] ,p24-31]

ee also

*Biogas
*Daily cover
*Landfill compaction vehicle
*Landfill mining

References

External links

* [http://www.envirotools.org/remediation/images/Landfilllinerimage.jpgLandfill liner diagram]

* [http://www.envirotechnicalsystems.com Enviro Technical Systems Landill lining]


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