我国水资源匮乏及水污染问题日益突出,然而“城市污水具有量大、集中、水质较为稳定的特点,是一种潜在的水资源,经过处理完全可以回收用于工业、市政、农业等领域。加快城市污水资源化进程,对贯彻落实可持续发展战略,妥善处理好经济发展同人口、资源、环境的关系,具有十分重要的意义。”科技部副部长程津培委员这样说。 其实,当前世界上不少国家为克服缺水的困难,已成功地将城市污水开辟为新的水源,有的国家水循环利用率达80％以上。这种城市的“第二水资源”,费用也远远低于开辟新鲜水源和远距离引 However, the problem of water shortage and water pollution in our country is becoming increasingly prominent. However, “urban sewage is characterized by large amount, concentration and relatively stable water quality. It is a potential water resource that can be completely recovered for industrial, municipal and agricultural purposes. Speeding up the process of urban sewage recycling is of great significance to implementing the strategy of sustainable development and properly handling the relationship between economic development and population, resources and environment, ”said Cheng Jinpei, deputy minister of science and technology. In fact, many countries in the world have successfully opened up urban sewage to new water sources in order to overcome the shortage of water. In some countries, the water recycling rate has reached more than 80%. The “second water” of this city is far less expensive than opening up fresh water sources and long-range