水是最宝贵的自然资源,是人类赖以生存的必要条件。水资源的保护、利用和研究已成为当今世界最热门的课题之一。我国是水资源缺乏的国家,随着工业的飞速发展,用水量越来越大,很多地区由于水资源不足而制约了工农业生产的发展,有些地区甚至由于水资源的短缺而造成了对人类生存的威胁和挑战。随着人们环境意识的加强和水资源短缺的日益突出,城市中水的再利用越来越受到人们的关注和重视。 Water is the most valuable natural resource and is a necessary condition for mankind to survive. The protection, utilization and research of water resources have become one of the hottest topics in the world today. China is a country lacking in water resources. With the rapid development of industry, the water consumption is increasing. In many areas, the development of agriculture and industry is restricted due to the shortage of water resources. In some areas, Survival threats and challenges. With the strengthening of people’s environmental awareness and the increasing shortage of water resources, urban water reuse has drawn more and more attention and attention.