Resilience scenarios for integrated water systems (RIWS)

在气候变化、极端天气、规划和运营决策的背景下，水系统的复原力对于水基础设施服务的提供和环境管理至关重要。在英国，由于2022年夏季的异常干旱，或者管理污水泄漏的挑战，供水系统面临着极大的压力。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：什么是综合水系统（RIWS）的弹性情景，可用于评估各种压力源、跨系统组件的弹性指标，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型水系统集成建模框架（WSIMOD）的支持，该框架将与DAFNI平台集成。WSIMOD在整合众多水系统相互作用（农村-城市、供水-废水和水流-水质）方面的灵活性，以及主要使用公开可用数据的快速模拟时间代表一系列水管理选择，使其成为评估综合水系统弹性的理想建模工具。将性能数据的关键阈值概念与性能指标评估相结合的新型弹性指标将由大伦敦当局、泰晤士和亲和水与环境局通过参与式研讨会提供信息。压力源将被定义为急性（例如，部件失效）和慢性（例如，气候变化）中断。RIWS项目旨在开发情景，为水务公司、规划部门和环境监管机构提供证据，证明通过弹性指标(如结构选择（如污水处理厂升级）或协调运营决策（如供水和废水系统信息交换以管理河流水质）评估水系统适应性规划的可行性。该项目直接促进了以“适应变化和强有力的决策”为重点的“建设一个安全和有复原力的世界”战略，以及城乡综合供水系统基于地点的复原力。

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.