发明名称 |
Landfill gas recovery system and method with pressure symmetry |
摘要 |
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 pressure and to automatically maintain it at a safe level. The sensing trench can also serve as a secondary equalizing path in heterogeneous landfills. Hot spots may advantageously be tapped by auxiliary collectors whose pressure level bears a predetermined proportional relationship to the primary collector pressure.
|
申请公布号 |
US4469176(A) |
申请公布日期 |
1984.09.04 |
申请号 |
US19830502093 |
申请日期 |
1983.06.08 |
申请人 |
GETTY SYNTHETIC FUELS, INC. |
发明人 |
ZISON, STANLEY W.;ROQUETA, ALEX |
分类号 |
B09B1/00;E21B43/00;E21B43/04;E21B43/30;(IPC1-7):E21B43/02;E21B43/12 |
主分类号 |
B09B1/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|