Non-conventional Water Resources Economics and Experiences in Developing Countries (II)

This two-part article gives an overview of the use of non-conventional water resources in developing countries. The first part (published in the January 1985 issue) reviewed United Nations involvement with the subject, and its relationship to the International Drinking Water Supply and Sanitation Decade. The main emphasis of the first part was on the development of technology and markets for the various desalination processes — distillation, electrodialysis and reverse osmosis. The general costs of the various processes were compared.
The second part of the article (presented here) concentrates on the other non-conventional water resources: transport of water by tanker and iceberg, wastewater reuse and weather modification. For all of the processes examples are given and economic comparisons made. It is concluded that it is always preferable to use conventional resources where available.
However, in water-short areas, consideration might be given to non-conventional resouces.     

污水资源化是缓解水资源危机的一条重要途径

通过阐述当今水资源短缺的情况,例举了国外和国内污水资源化（污水再生利用）的一些示范工程和应用工程,以此来说明污水资源化在我国是一项利国、利民,利于解决资源短缺、保护环境的有效措施。     

大连市水资源承载力动态研究

区域水资源承载力是进行区域生态建设和确定社会经济发展规划的基础。介绍了基于主成分分析理论的区域水资源承载力评价方法,建立了反映大连市水资源承载力的指标评价系统,并对大连市2001—2008年的水资源承载力进行了定量分析。研究结果表明,近年来大连市水资源承载力逐年减弱,水资源已经成为制约大连市社会经济与生态环境协调发展的主要因素。针对这种现状,提出了大连市水资源可持续利用的若干对策。