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首页> 外文期刊>Frontiers of environmental science & eng >Sustainability of urban drainage management: a perspective on infrastructure resilience and thresholds
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Sustainability of urban drainage management: a perspective on infrastructure resilience and thresholds

机译：城市排水管理的可持续性：基础设施弹性和阈值的观点

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摘要

Urban wastewater infrastructures have been threatened by natural and socioeconomic disturbances. This study investigates infrastructure resilience against the risks of long-term changes rather than natural disasters. Urban expansion that leads to an increased urban runoff and massive population movements that cause fluctuations in domestic emissions are considered in this study. Pollution permits for water bodies are adopted as constraints on wastewater infrastructures. A land use-based accounting method, combined with a grid-based database, is developed to map domestic discharge and urban runoff to service areas of wastewater treatment plants. The results of a case study on downtown Sanya, the most famous seashore tourist attraction in China, show that the average resilient values of three sub-catchment areas in 2010 were -0.57, 0.10 and 0.27, respectively, a significant spatial variation. The infrastructure in the Sanya River sub-region is the least flexible, and is more likely to fail due to unstable inflows. The resiliencies will increase to 0.59, 1.01 and 0.54, respectively, in 2020, a considerable improvement in robustness. The study suggests that infrastructure resilience needs to be taken into further consideration for urban planning and the related realm of urban governance to foster more robust wastewater management under various risks.
机译：城市废水基础设施受到自然和社会经济干扰的威胁。这项研究调查了基础架构抵御长期变化而不是自然灾害风险的能力。这项研究考虑了导致城市径流增加的城市扩张和导致国内排放波动的大规模人口流动。水体的污染许可证被用作对废水基础设施的限制。开发了一种基于土地使用的核算方法，并结合了基于网格的数据库，以绘制生活污水和城市径流到废水处理厂服务区的地图。以中国最著名的海滨旅游胜地三亚市中心为例的研究结果表明，2010年三个子集水区的平均复原力值分别为-0.57、0.10和0.27，具有显着的空间变化。三亚河次区域的基础设施最不灵活，并且由于不稳定的流入而更有可能发生故障。到2020年，弹性将分别提高到0.59、1.01和0.54，这将大大提高鲁棒性。研究表明，在城市规划和城市治理的相关领域中，需要进一步考虑基础设施的弹性，以在各种风险下促进更强大的废水管理。

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