Resilience scenarios for integrated water systems (RIWS)

水系统在气候变化、极端天气、规划和业务决策方面的应变能力对提供水基础设施服务和环境管理至关重要。在英国，供水系统正面临着极端压力，原因是像2022年夏天那样的异常干旱，或者是管理污水泄漏的挑战。与此同时，最新的河流水质报告显示，英国只有14%的河流达到良好的生态状态。因此，有必要开展复原力评估，以应对水系统和环境之间相互关联的挑战。该项目解决了一个关键的知识缺口：综合水系统(RIW)的复原力情景可用于评估各种压力源、跨系统组件的复原力指标，并为适应性规划提供信息？RIWS的开发将得到伦敦帝国理工学院开发的新的水系统综合建模框架(WSIMOD)的支持，该框架将与Dafni平台相结合。WSIMOD在整合众多水系统相互作用(农村-城市、供水-废水和流量-水质)方面的灵活性，以及利用主要公开可用的数据以快速模拟时间表示一系列水管理选项，使其成为评估综合水系统弹性的理想建模工具。新的复原力指标将结合绩效数据中关键阈值的概念和绩效指标评估，将由大伦敦管理局、泰晤士河流域和亲和力水与环境局通过参与性研讨会提供信息。应激源将被定义为急性(例如，部件故障)和慢性(例如，气候变化)中断。RIWS项目旨在制定情景，在通过复原力指标进行评估时，能够为水务公司、规划当局和环境监管机构提供证据，证明水系统适应性规划的可行性，例如结构选择(例如废水处理厂升级)或协调运营决策(例如，水供应和废水系统信息交流，以管理河流水质)。该项目直接促进了“建设一个安全和有弹性的世界”战略，该战略的重点是“适应变化和强有力的决策”以及城乡综合供水系统的地方复原力。

The resilience of water systems in the context of climate change, weather extremes, planning and operational decisions is crucial for water infrastructure service delivery and environmental management. In the UK, water systems are under extreme pressure from exceptional droughts like in the summer of 2022, or challenges to manage sewage spills. At the same time, the latest report on river water quality shows that only 14% of rivers in England meet good ecological status. Thus, there is a need to develop resilience assessments to address interlinked challenges of water systems and the environment. This project addresses a critical knowledge gap: What are resilience scenarios for integrated water systems (RIWS) that can be used to evaluate resilience metrics for various stressors, across system components and to inform adaptive planning? The development of RIWS will be supported by the novel Water System Integration Modelling Framework (WSIMOD) developed at the Imperial College London that will be integrated with the DAFNI platform. WSIMOD's flexibility in integrating numerous water system interactions (rural-urban, water supply-wastewater and flow-water quality) and representing a range of water management options with fast simulations times using primarily publicly available data outstand it as an ideal modelling tool for assessing the resilience of integrated water systems. Novel resilience metrics that combine concepts of a critical threshold in performance data with performance metrics evaluation will be informed by Greater London Authority, Thames and Affinity Water and Environment Agency's engagement through participatory workshops. Stressors will be defined as acute (e.g., component failure) and chronic (e.g., climate change) disruptions. The RIWS project aims to develop scenarios that can provide evidence for water companies, planning authorities and environmental regulators on the feasibility of water systems adaptive planning when assessed by resilience metrics, such as structural options (e.g., wastewater treatment plant upgrade) or coordinated operational decisions (e.g., water supply and wastewater systems information exchange to manage river water quality). The project directly contributes to the 'Building a secure and resilient world' strategy focus on 'adaptation to change and robust decision making' and place-based resilience of integrated rural-urban water systems.