Water Footprint Assessment for Wastewater Treatment: Method, Indicator, and Application
Water Footprint Assessment for Wastewater Treatment: Method, Indicator, and Application
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废水处理水足迹评估：方法、指标和应用
DOI：
10.1021/es402013t
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发表时间：
2013-07-16
影响因子：
11.4
通讯作者：
Chen, G. Q.
中科院分区：
文献类型：
--
作者：
Shao, Ling;Chen, G. Q.
在这项工作中的水足迹的直接和间接的水处理成本的总和是第一次占。基于过程分析和投入产出分析相结合的混合方法，给出了污水处理厂供应链水足迹核算的详细流程。设计了一套旨在揭示污水处理系统效率和可再生性的指标，作为能源供应系统净能量分析中相应指标的平行指标。以北京航天城污水处理厂为例进行了案例研究。高的水投资回报率（WROI）和低的净化水投资（WIWP）表明了案例系统的高效性和可再生性，说明了污水处理对水回用的基本作用。污水和污泥处理率的不断提高表明，中国迫切需要减少水足迹，提高污水处理性能。
The water footprint in terms of the sum of both direct and indirect water cost of wastewater treatment is for the first time accounted in this work. On the basis of the hybrid method as a combination of process analysis and inputoutput analysis, a detailed water footprint accounting procedure is provided to cover the supply chain of a wastewater treatment plant. A set of indices intending to reveal the efficiency as well as renewability of wastewater treatment systems are devised as parallels of corresponding indicators in net energy analysis for energy supply systems. A case study is carried out for the Beijing Space City wastewater treatment plant as a landmark project. The high WROI (water return on investment) and low WIWP (water investment in water purified) indicate a high efficiency and renewability of the case system, illustrating the fundamental function of wastewater treatment for water reuse. The increasing of the wastewater and sludge treatment rates are revealed in an urgent need to reduce the water footprint of China and to improve the performance of wastewater treatment.