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在美国,现直垃圾已接近饱和状态,能够开辟垃圾场的土地又日益减少,正面临着严重的垃圾处理问题。为解决这一问题,许多城市都在建造燃烧垃圾的装置,来处理当地废弃的垃圾。七十年代初期的事实表明美国已十分依赖外国能源。能源危机、能源价格不断上涨以及处理垃圾的困难使得燃烧垃圾的热力系统对全美国的所有社区更富吸引力。欧洲和日本这些能源价格一直很高的地方,燃烧垃圾的热力系统已使用了多年。但在美国,1973年以前,因常规燃料价格较低,几乎所有燃烧垃圾的热力系统都使用常规燃料,这样做是不经济的。
In the United States, the amount of landfill is nearing saturation and the land that can open up the landfill is declining. It is facing serious waste disposal problems. To solve this problem, many cities are building devices to burn rubbish to deal with the local waste. The fact of the early 1970s shows that the United States has relied heavily on foreign energy. The energy crisis, rising energy prices and the difficulty of disposing of rubbish make the thermal system that burns rubbish more attractive to all communities in the United States. Where energy prices in Europe and Japan have been high, the thermal system that burns rubbish has been used for years. In the United States, however, it was uneconomical by 1973 to use conventional fuels for almost all thermal systems burning rubbish because of lower conventional fuel prices.