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近50年来,全球人口增加了3倍,而城市人口却增加了10倍。水是人类维持生命、发展生产的首要因素。面对当今世界水资源的污染和匮乏,解决人类饮水和生活用水的问题已成为刻不容缓、极为迫切的重大事情。
In the past 50 years, the global population has tripled while the urban population has increased tenfold. Water is the primary factor for mankind to sustain life and develop production. In the face of the pollution and scarcity of water resources in the world today, the solution to the problems of human drinking water and domestic water has become an urgent and urgent matter.