Landfill liner for capturing certain leachate contaminants in the event of leakage
AssigneeDuke University
InventorsP. Aarne Vesilind, Tsau-don Tsai
Life of this patent
Estimating the term…
Abstract
A landfill liner comprising clay and lime for capturing certain leachate contaminants, particularly potentially toxic heavy metals. The lime acts to absorb significantly more of the potentially toxic heavy metals than would a conventional clay landfill liner.
Claims10
In a landfill of the type including a clay landfill liner and a system for collecting and removing leachate generated by the landfill, the improvement comprising an improved landfill. liner for capturing heavy metals and the like to prevent groundwater contamination in the event of leakage of leachate through the landfill liner, said landfill liner comprising a plurality of successive layers of clay and lime that are each mixed subsequent to placement and prior to being covered by another layer of clay and lime that are in turn mixed together.
In a landfill of the type including a clay landfill liner and a system for collecting and removing leachate generated by the landfill, the improvement comprising an improved landfill liner for capturing heavy metals and the like to prevent groundwater contamination in the event of leakage of leachate through the landfill liner, said landfill liner comprising an admixture of clay and lime.
In a landfill of the type including a clay landfill liner and a system for collecting and removing leachate generated by the landfill, the improvement comprising an improved landfill liner for capturing heavy metals and the like to prevent groundwater contamination in the event of leakage of leachate through the landfill liner, said landfill liner is a membrane comprising an admixture of clay and lime contained between top and bottom plastic sheets.
A landfill liner for enhanced removal of heavy metals and the like to prevent groundwater contamination in the event of seepage of leachate through the landfill liner, the landfill liner comprising a plurality of successive layers of clay and lime that are each mixed subsequent to placement and prior to being covered by another layer of clay and lime that are in turn mixed together.
A landfill liner for enhanced removal of heavy metals and the like to prevent groundwater contamination in the event of seepage of leachate through the landfill liner, the landfill liner comprising an admixture of clay and lime.
A landfill liner for enhanced removal of heavy metals and the like to prevent groundwater contamination in the event of seepage of leachate through the landfill liner, the landfill liner is a membrane comprising an admixture of clay and lime contained between top and bottom plastic sheets.
Dependencies are inferred from the claim text.