Hydraulic and earth engineering – Subterranean waste disposal – containment – or treatment – With treatment of waste
Patent
1998-02-06
2000-07-04
Lillis, Eileen Dunn
Hydraulic and earth engineering
Subterranean waste disposal, containment, or treatment
With treatment of waste
405128, 405263, 588250, 588259, B09B 100, G21F 900
Patent
active
06082929&
ABSTRACT:
A waste containment system utilizing a manufactured soil useful for the remediation of waste disposal sites for municipal and industrial waste products. To form the manufactured soil, conditioned clay materials, in particular bentonite clay, are mixed with sand and water to form a colloidal suspension. The mixture can be either placed into trenches, as a slurry, to form vertical barriers or allowed to de-water and then spread and compacted to create surface caps and/or sub-surface liners. Normally, the a containment system includes an imbedded sand drainage layer so as to make the composite system impervious to air and water penetration. The percentage of clay in the manufactured soil is varied depending on installation site characteristics and desired performance standards. Manufactured soil with as little as approximately 1% to 3% clay (dry wt.) can be made to achieve and maintain hydraulic conductivities as low as 1.7.times.10.sup.-9 cm/sec.
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Lee Jong-Suk
Lillis Eileen Dunn
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