All-weather landfill soil cover system for preventing water infiltration and landfill gas emission
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United States of America Patent
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Aug 11, 2015
Grant Date -
Feb 6, 2014
app pub date -
Aug 2, 2013
filing date -
Aug 6, 2012
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Abstract
A landfill soil cover system is proposed for preventing water infiltration into a landfill and gas emission from the landfill under all weather conditions. The landfill cover system comprises three soil layers; namely, a clay layer, a gravelly sand layer and a silt layer, compacted successively from the bottom to the top of the system. The clay layer is compacted immediately above an optional gas collection layer and landfill waste at an optimum water content. Additionally, a trench for water drainage may be constructed, for example, every 20-40 m in the horizontal direction. Water infiltration and landfill gas emission can be prevented effectively by this landfill soil cover system under any humid, semi-arid and arid climates.
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Cited Art Landscape
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