Gas recovery from landfills using aqueous foam

Details Gas recovery from landfills using aqueous foam Gas recovery from landfills using aqueous foam

2005-08-16

2005-08-16

Kreck, John (Department: 3673)

Hydraulic and earth engineering

Subterranean waste disposal, containment, or treatment

Landfill

C405S129250

Reexamination Certificate

active

06929423

ABSTRACT:
Gas is recovered from a landfill by introducing water into the landfill to promote digestion of organic matter in the landfill, and removing from the landfill gas produced by digestion. The improvement comprises the introduction of water as part of an aqueous foam, whereby the water is distributed more uniformly throughout the landfill. Iron salts may be included in the foam to eliminate hydrogen sulfide.

REFERENCES:
patent: 3599715 (1971-08-01), Roszelle
patent: 6283676 (2001-09-01), Hater et al.
patent: 6481929 (2002-11-01), Layton et al.
American City & County, 2003 Marketing Information, Oxidation system stops landfill methane odors, Apr. 1, 1998.

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