2024年9月20日 · Landfill gas (LFG) is a natural byproduct of the decomposition of organic material in landfills. LFG is composed of roughly 50 percent methane (the primary component of natural gas), 50 percent carbon dioxide (CO 2) and a …

A landfill’s gas collection system (GCS) requires frequent monitoring and operational adjustments to optimize its performance to meet its design and operational goals. Proper operation and maintenance (O&M) can minimize air leaks in the system and reduce the amount of time a system is taken down for repair.

Passive and active methane gas collection systems, including vacuum blowers, treatment units, and vent wells may also be installed to control and manage off-gas generated by waste.

2024年7月1日 · Methane collection efficiency will vary depending on wellfield coverage, condition of the infrastructure and landfill cover type. For well-designed and well-operated systems, collection efficiencies of 60 percent are achievable in areas with daily soil cover.

When an SWD site owner or project developer wants to consider the technical and economic feasibility of an LFGE project, the first step is to estimate the volume of LFG (specifically methane) that can be collected. In many cases, no active collection system is installed and no LFG flow data exist to indicate an achievable collection rate.

With information about landfill gas generation, composition, and pressure, a landfill operator can assess gas production and distribution changes and modify the pumping system and collection well valves to most efficiently run an active gas collection system.

At American Landfill, methane gas is collected and controlled via underground pipes located within the waste disposal area. In 1996, landfill gas collection wells were first installed at American Landfill. Today, American Landfill has more than 100 gas collection wells located at the facility.