污水再利用国外已历时很长,且再利用规模很大,不少国家已作为解决水资源不足的战备性对策。美国有300多个城市实行污水再利用,每年达几亿 t。缺水的西南部几个州,农业灌溉、工业生产、娱乐杂用、回灌地下等都大量使用再生水。再生水一词已为人们普遍接受。南太湖水厂和21世纪水厂还在将污水处理成高洁净水,为下世纪人类全面使用再生水作超 Wastewater reuse has lasted a long time abroad, and the reuse of large scale, many countries have taken as a solution to the shortage of water resources readiness strategy. More than 300 cities in the United States implement wastewater reuse, reaching hundreds of millions of tons each year. Water shortage in several southwestern states, agricultural irrigation, industrial production, entertainment miscellaneous, recharge underground and so extensive use of reclaimed water. The term reclaimed water is generally accepted. South Tai Lake Waterworks and the 21st century waterworks is still sewage treatment into high clean water for the next century, the full use of recycled water for human super