DHV B.V., Laan 1914 no 35, Amersfoort 3818, EX, The Netherlands.
Water Sci Technol. 2009;60(12):3165-72. doi: 10.2166/wst.2009.160.
China is undergoing rapid urbanization and economic development. This requires a new approach on spatial planning and environmental infrastructure. In the presented project an example of this approach is given for the city of Changzhou (China) where a new residential area (Qinglong district) will be developed for 100.000 inhabitants. Key issue within the formulation of sustainable sanitation concepts is the integration and management of water, waste and energy in such a way that they will become beneficial to the establishment of the envisaged green city. Starting point was the closing of material cycles focusing on possibilities to recover and reuse valuable resources and energy from "waste" produced in an urban setting. Four different scenarios focusing on water, nutrient and energy recovery were compared with the baseline wastewater management practice. Besides environmental benefits, the economical benefits of sustainable sanitation concepts are attractive, the break even point with the baseline scenario, is already after 5 years, provided that recovered resources will be sold for a marketable price. We believe that presented concepts are applicable for a wide range of new urban development initiatives in China and similar rapidly developing densely populated regions worldwide.
中国正在经历快速的城市化和经济发展。这需要一种新的空间规划和环境基础设施方法。在本项目中，以中国常州市为例，给出了这种方法的一个示例，该市将为 10 万居民开发一个新的住宅区（青龙区）。在制定可持续卫生概念时的关键问题是整合和管理水、废物和能源，以使它们有利于建立预期的绿色城市。出发点是关注从城市环境中产生的“废物”中回收和再利用有价值的资源和能源的物质循环闭合。四个不同的侧重于水、养分和能源回收的方案与基准废水管理实践进行了比较。除了环境效益，可持续卫生概念的经济效益也很有吸引力，如果回收的资源能够以有市场价值的价格出售，那么与基准方案相比，收支平衡点将在 5 年内达到。我们相信，所提出的概念适用于中国和世界上类似快速发展的人口密集地区的广泛的新城市发展举措。
