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Landfill Gas Energy Technologies

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Landfill Gas Energy Technologies ( landfill-gas-energy-technologies )

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LFG generation rate may be assessed using the equations shown above, for each year starting from the first year in which waste is deposited in the landfill. Figure 2 shows an example of a gas generation curve. 53000 48000 43000 38000 33000 28000 23000 18000 13000 8000 3000 Figure 2. Landfill gas modelling Source: INIG figure. 1.2 Collection of Landfill Gas 350,0 300,0 250,0 200,0 150,0 100,0 50,0 0,0 Years A gas extraction system from a municipal solid waste landfill consists of the following elements: • Gas vents from the landfill bed (vertical wells and horizontal pipes) • Header pipes discharging gas to the collection point (collection station) • Collection station (demoisturisers, blowers, measuring/performance monitoring equipment) 1.2.1 Elements of installation for gas extraction Vertical gas extraction system - wells Newly constructed municipal solid waste landfills may have their extraction wells built on the layer of soil planted directly on a geomembrane, which serves as an additional landfill lining (Picture 1). This way the stress of the well on a geomembrane is reduced and the landfill 11 1972 1974 1976 1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 2006 2008 2010 2012 2014 2016 2018 2020 2022 2024 2026 2028 2030 2032 2034 2036 2038 2040 2042 2044 2046 2048 2050 Waste in place [Mg/year] 3 Gas volume m /h

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Landfill Gas Energy Technologies

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1022_LFG-Handbook.pdf

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