Landfill: Difference between revisions
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A '''Landfill''' Site is the ultimate destination for waste, ideally after all forms of [[Reuse]], [[Recycling]], and [[Recovery]] have been undertaken and as such it is at the bottom of the [[Waste Hierarchy]]. | A '''Landfill''' Site is the ultimate destination for waste, ideally after all forms of [[Reuse]], [[Recycling]], and [[Recovery]] have been undertaken and as such it is at the bottom of the [[Waste Hierarchy]]. | ||
[[Category:Technologies & Solutions]] | [[Category:Technologies & Solutions]] | ||
[[File:General Landfill Pic.png| | [[File:General Landfill Pic.png|500px|left|General Picture of Landfill Compactor compacting MSW Waste]]__TOC__ | ||
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==Introduction== | ==Introduction== | ||
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Landfills are constructed in discrete parts known as “[[Landfill Cell|landfill cells]]”. The sub-division into cells is undertaken so as to minimise the operating area and consequently minimise leachate generation and make the site more manageable in terms of odour and litter control. Sub-division also enables the site engineering to be constructed progressively as the site fills. | Landfills are constructed in discrete parts known as “[[Landfill Cell|landfill cells]]”. The sub-division into cells is undertaken so as to minimise the operating area and consequently minimise leachate generation and make the site more manageable in terms of odour and litter control. Sub-division also enables the site engineering to be constructed progressively as the site fills. | ||
[[File:Landfill-gas-flare.jpg|300px|left|Landfill gas flare - source Hoffsetter]] | |||
===Landfill Gas=== | ===Landfill Gas=== | ||
Another product of waste decomposition is landfill gas. This is a mixture of various components, principally methane and is a [[Biogas]] not dissimilar to that generated in an [[Anaerobic Digestion]] facility. WMP27B<ref name="refB" /> also contains a useful review of the generation and evolution of landfill gas. | Another product of waste decomposition is landfill gas. This is a mixture of various components, principally methane and is a [[Biogas]] not dissimilar to that generated in an [[Anaerobic Digestion]] facility. WMP27B<ref name="refB" /> also contains a useful review of the generation and evolution of landfill gas. | ||
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Management of landfill gas consists of the prevention of build up by active removal of the gas from the waste mass by extraction (and subsequent destruction by high temperature flare or via the creation of energy for subsequent use on site or for export ot the national grid) and the prevention of migration and escape by the containment barrier/lining system and the restoration/capping systems. WMP27<ref name="ref27" /> deals with methods for management of landfill gas. | Management of landfill gas consists of the prevention of build up by active removal of the gas from the waste mass by extraction (and subsequent destruction by high temperature flare or via the creation of energy for subsequent use on site or for export ot the national grid) and the prevention of migration and escape by the containment barrier/lining system and the restoration/capping systems. WMP27<ref name="ref27" /> deals with methods for management of landfill gas. | ||
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==Landfill Location Policy in the UK== | ==Landfill Location Policy in the UK== | ||