Maximizing methane gas extraction

在世界上大多数地方，家庭和商业无害废物由市政当局收集并送往卫生填埋场。在被放入垃圾填埋场后不久，废物中的有机物质开始厌氧生物降解，产生垃圾填埋气体，其中40%至60%是甲烷。甲烷具有爆炸性，是一种强效温室气体。以前，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，由于人们对填埋气体造成的损害和发生的严重爆炸的环保意识，运营流程发生了变化。此外，甲烷作为一种可持续的燃料来源也有价值。因此，填埋场运营商采取了各种措施，以尽量减少场外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.