Landfill design and method for improved landfill gas capture

Details Landfill design and method for improved landfill gas capture Landfill design and method for improved landfill gas capture

2007-02-23

2008-11-11

Kreck, John (Department: 3672)

Hydraulic and earth engineering

Subterranean waste disposal, containment, or treatment

Landfill

C405S129570

Reexamination Certificate

active

07448828

ABSTRACT:
The invention provides an improved method of collecting biogas from a landfill that results in more complete collection of biogas produced in the landfill, and with less contamination with air. The method involves providing the landfill with an upper gas containment layer near the surface of the landfill to retard biogas escape and air entrainment into the landfill. Underneath the gas containment layer is provided a gas-permeable conductive layer. Underneath the conductive layer, a well withdraws biogas from the landfill. Withdrawal of biogas from the well creates a partial vacuum that draws gas from the gas-permeable conductive layer down through the waste mass to the well. If the rate of gas withdrawal from the well is too rapid, air will be entrained from the atmosphere into the gas-permeable conductive layer. But if the rate of gas withdrawal from the well is too slow, biogas may percolate through the gas-containment layer and the surface of the landfill to escape. Monitoring the gas composition of the gas-permeable layer allows one to determine quickly and continuously whether the rate of gas withdrawal from the well is too fast or too slow.

REFERENCES:
patent: 4442901 (1984-04-01), Zison
patent: 4444041 (1984-04-01), Zison
patent: 4469176 (1984-09-01), Zison
patent: 5063519 (1991-11-01), Zison
patent: 5090843 (1992-02-01), Grigsby
patent: 5335535 (1994-08-01), Ruthrof et al.
patent: 5857807 (1999-01-01), Longo, Sr.
patent: 6283676 (2001-09-01), Hater et al.
patent: 2003/0008381 (2003-01-01), Augenstein
patent: 2005/0201831 (2005-09-01), Lee et al.

Affiliated with

Also associated with

Rating

Landfill design and method for improved landfill gas capture does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Landfill design and method for improved landfill gas capture, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Landfill design and method for improved landfill gas capture will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4023887