Impervious layer formation process and landfill adsorption system
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United States of America Patent
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Mar 13, 1990
Grant Date -
N/A
app pub date -
May 23, 1988
filing date -
May 27, 1987
priority date (Note) -
Expired
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Abstract
An arrangement for retaining harmful substances contained in water seeping from a waste dumping ground body includes an impervious layer of mineral sealing materials, such as clay, with an adjacent adsorption layer containing materials capable of binding harmful substances by physical and/or chemical adsorption. The materials may be in the form of admixtures. When seepage water flows very slowly through a layer of mineral sealing materials, it is possible to remove and retain the harmful substances. The permeability of the arrangement reduces with time due to the adsorption process with its sealing effect improving over geological time periods.
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