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摘要

Traditionally, North American landfills were operated as a disposal business financially driven by the tons of waste processed. As environmental regulations and technology developed, landfill operations transitioned across the United States to reduce environmental impact and increase efficiency. Gone are the typical "dump" sites, and in are landfill biogas collection and bioreactors. These sophisticated waste management systems are designed to capture previously emitted biogas and pipe it to a central location. When the primary fear was environmental contamination, odors, and greenhouse gas emissions, flares were installed to combust the collected biogas as a simple alternative. Then, landfill gas-to-electricity incentives were created and gas was commonly sent to combined heat and power (CHP) systems for electricity production and output onto the grid.