绿色基础设施增长媒体堵塞的可视化

IF 1.6 3区环境科学与生态学 Q3 WATER RESOURCES

Urban Water Journal Pub Date : 2023-02-24 DOI:10.1080/1573062X.2023.2180394

Zhangjie Peng, J. Edmondson, R. Stirling, Daniel Green, R. Dawson, S. De-Ville, V. Stovin

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引用次数: 1

摘要

为雨水管理而设计的绿色基础设施(GI)中的生长介质在提供水文效益方面起着关键作用。然而，城市雨水淤积泥沙会造成堵塞，降低入渗能力。本研究介绍了一种使用荧光示踪剂颗粒表征胃肠道堵塞影响的新方法。结果比较了两种不同的生长介质:灰绿基质(G2G)和居里基质(MCS)。结果表明，两种生长介质的表面均保留了大部分泥沙颗粒，G2G的表面堵塞导致入渗能力下降。在两种生长介质中都观察到沉积物垂直运动，但颗粒在MCS中移动更深。泥沙垂直运动受生长介质孔径分布的影响，孔径分布与来沙颗粒粒径分布接近的生长介质堵塞风险较高。

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Visualisation of clogging in green infrastructure growing media

ABSTRACT Growing media in green infrastructure (GI) designed for stormwater management plays a critical role in providing hydrological benefits. However, sediment deposition by urban stormwater can cause clogging and reduce the infiltration capacity. This study introduces a new approach to characterise the impact of clogging of GI that uses fluorescent tracer particles. Results are compared for two contrasting growing media: Grey to Green Substrate (G2G) and Marie Curie Substrate (MCS). Results showed that most sediment particles were retained on the surface of both growing media, and surface clogging in G2G caused a decrease in infiltration capacity. Sediment vertical movement was observed in both growing media, but particles travelled deeper in MCS. Vertical sediment movement is influenced by the growing media’s pore size distribution, and a high clogging risk is expected in growing media with a pore size distribution that is close to the particle size distribution of the incoming sediment particles.

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来源期刊

Urban Water Journal WATER RESOURCES-

CiteScore

4.40

自引率

11.10%

发文量

101

审稿时长

3 months

期刊介绍： Urban Water Journal provides a forum for the research and professional communities dealing with water systems in the urban environment, directly contributing to the furtherance of sustainable development. Particular emphasis is placed on the analysis of interrelationships and interactions between the individual water systems, urban water bodies and the wider environment. The Journal encourages the adoption of an integrated approach, and system''s thinking to solve the numerous problems associated with sustainable urban water management. Urban Water Journal focuses on the water-related infrastructure in the city: namely potable water supply, treatment and distribution; wastewater collection, treatment and management, and environmental return; storm drainage and urban flood management. Specific topics of interest include: network design, optimisation, management, operation and rehabilitation; novel treatment processes for water and wastewater, resource recovery, treatment plant design and optimisation as well as treatment plants as part of the integrated urban water system; demand management and water efficiency, water recycling and source control; stormwater management, urban flood risk quantification and management; monitoring, utilisation and management of urban water bodies including groundwater; water-sensitive planning and design (including analysis of interactions of the urban water cycle with city planning and green infrastructure); resilience of the urban water system, long term scenarios to manage uncertainty, system stress testing; data needs, smart metering and sensors, advanced data analytics for knowledge discovery, quantification and management of uncertainty, smart technologies for urban water systems; decision-support and informatic tools;...