Maximizing methane gas extraction

在世界大多数地区，家庭和商业无害废物由市政当局收集并送往卫生垃圾填埋场。在被放入垃圾填埋场后不久，垃圾中的有机物质开始进行厌氧生物降解，产生垃圾填埋气，其中40%到60%是甲烷。甲烷是爆炸性的，是一种强有力的温室气体。此前，垃圾填埋场运营商允许垃圾填埋场气体自然消散到大气中或通过土壤迁移。近年来，由于环境意识到垃圾填埋场气体造成的破坏和发生的严重爆炸，作业惯例发生了变化。此外，甲烷作为一种可持续的燃料来源也有价值。因此，垃圾填埋场运营商采取了各种措施，以最大限度地减少异地迁移和最大限度地收集甲烷气体。

In most parts of the world, household and commercial non hazardous wastes are collected by the municipality and sent to a sanitary landfill. Shortly after being placed in the landfill, the organic material in the waste starts to biodegrade anaerobically, producing landfill gas, which is 40 to 60% methane. Methane is explosive and a potent greenhouse gas. Previously, landfill operators allowed the landfill gas to naturally dissipate into the atmosphere or migrate through the soil. In recent years, operation practises have changed because of the environmental awareness of the damage caused by the landfill gas and the serious explosions that have taken place. In addition, there is the value of methane as a sustainable fuel source. Accordingly, landfill operators have taken a variety of steps to minimize offsite migration and maximize methane gas collection.