Ven Te Chow Hydrosystems Laboratory, Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign, Urbana, IL, USA.
School of Hydraulic Engineering, Dalian University of Technology, Dalian, Liaoning Province, 116024, China.
J Environ Manage. 2022 Feb 15;304:114208. doi: 10.1016/j.jenvman.2021.114208. Epub 2021 Dec 8.
Water rights trading is commonly used as a means of water resources reallocation between different water use sectors or between different end-users within the same sector. No studies, however, were reported on water rights trading from residential water use to other sectors. The primary reasons include the ambiguous definition of residents' water rights and lack of real-time information about water consumption. This study presents a domestic-industrial water permits trading framework for urban water demand management. The framework is applied to the case study of Dalian demonstrating its feasibility theoretically and technologically from the perspective of the whole city and typical demonstration areas. The finding obtained shows that the tradable water volume accounts for 13.72% of the total residential water use, brings a profit of 91.05 million yuan to the residents, and saves 56.67 million yuan of water resources costs for industry users. The increase in water prices for consumption through tiered pricing can raise the tradable volume to 16.10%. Furthermore, a trading platform based on WeChat is developed to completely materialize the entire water permits trading process according to the real-time water consumption data collected from smart water meters. This study shows that the water permits trading between urban domestic-industrial sectors is an effective means of redistributing urban water resources to improve economic benefits while ensuring urban water supply security.
水权交易通常被用作在不同用水部门或同一部门内的不同终端用户之间重新分配水资源的手段。然而，没有关于居民用水向其他部门转让水权的研究报告。主要原因包括居民水权的定义不明确以及缺乏关于用水量的实时信息。本研究提出了一种用于城市需水管理的国内工业水许可证交易框架。该框架应用于大连市的案例研究，从全市和典型示范区的角度在理论和技术上证明了其可行性。研究结果表明，可交易水量占居民总用水量的 13.72%，为居民带来 9105 万元的利润，并为工业用户节省 5667 万元的水资源成本。通过阶梯水价提高用水量的水价，可以将可交易水量提高到 16.10%。此外，还根据智能水表采集的实时用水量数据，开发了一个基于微信的交易平台，以完全实现整个水许可证交易过程。本研究表明，城市国内产业部门之间的水许可证交易是重新分配城市水资源的有效手段，可以在确保城市供水安全的同时提高经济效益。
