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US 6,742,962 B2Granted
Infiltration and gas recovery systems for landfill bioreactors
AssigneeWaste Management, Inc.
InventorsGary Hater, John A. Barbush, Richard N. Barr
Life of this patent
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Abstract
A trench located in a landfill including the combination of a liquid infiltration piping system and a horizontal gas withdrawal piping system, the combination allowing for simultaneous liquid infiltration and gas withdrawal from a landfill.
Claims32
A landfill trench comprising:
- a bottom material;
- at least one horizontal gas collection pipe;
- at least one liquid distribution pipe;
- a cover material;
- and
- a filler material located between the bottom and the cover material
- wherein the bottom, cover and filler materials are three different materials, and the at least one horizontal gas collection pipe and the at least one liquid distribution pipe are located in the same landfill trenches.
4 more elements
A landfill having a plurality of trenches, each trench comprising a bottom material;
- at least one horizontal gas collection pipe;
- at least one horizontal liquid distribution pipe;
- a cover material;
- and
- a filler material located between the bottom and the cover material wherein the landfill further includes a gas piping header and a gas riser that unites the horizontal gas collection pipes of each of at least two trenches with the gas header, and a liquid header wherein a liquid riser unites the liquid header with each horizontal liquid distribution pipe
- wherein the bottom, cover and filler materials are three different materials, and the at least one horizontal gas collection pipe and the at least one horizontal liquid distribution pipe are located in the same landfill trench.
3 more elements
Dependencies are inferred from the claim text.