|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||166/250 ; 166/53 ; 166/369 ; 405/129|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 72 인용 특허 : 4|
In a landfill gas recovery system, the breakthrough danger is minimized, and the system efficiency is improved, by providing pressure-equalizing low-impedance gas paths such as aggregate-filled symmetry trenches positioned within the landfill and surrounding, at least partially, the primary collection zone. The symmetry trenches may be connected to the system\s low-pressure source to serve as secondary collectors. A sensing trench positioned within the landfill along the periphery of the collector\s zone of influence can be used to monitor the collector ...
A method of reducing air intrusion during the recovery of landfill gas from a landfill, comprising the steps of: (a) providing a gas collection zone in said landfill in proximity to its surface; (b) maintaining said collection zone at a pressure lower than the pressure of said gas in said landfill; and (c) positioning an elongated low-impedance gas path in said landfill in proximity to its surface and to said gas collection zone, said path extending in a generally non-radial direction with respect to said gas collection zone and being spaced therefrom.