Quantifying the performance of dual-use rainwater harvesting systems

Quinn, Ruth; Rougé, Charles; Stovin, Virginia

doi:10.1016/j.wroa.2020.100081

Cited by 20 publications

(16 citation statements)

References 24 publications

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“…Utilising local water resources can increase urban resilience in regards to UCC1, complementing and relieving large-scale water supply systems that are susceptible to failure. Intercepting and harvesting the water from precipitation before it forms runoff in the urban catchment not only presents an additional, low-cost water source, but also contributes to re-establishing the pre-development water cycle [44,45]. Dual-use rainwater harvesting systems are in this context relevant for combining stormwater management and additional water supply [45].…”

Section: Water and Waste Treatment Recovery And Reuse (Ucc2)mentioning

confidence: 99%

Management of Urban Waters with Nature-Based Solutions in Circular Cities—Exemplified through Seven Urban Circularity Challenges

Oral

Radinja

Rizzo³

et al. 2021

Water

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Nature-Based Solutions (NBS) have been proven to effectively mitigate and solve resource depletion and climate-related challenges in urban areas. The COST (Cooperation in Science and Technology) Action CA17133 entitled “Implementing nature-based solutions (NBS) for building a resourceful circular city” has established seven urban circularity challenges (UCC) that can be addressed effectively with NBS. This paper presents the outcomes of five elucidation workshops with more than 20 European experts from different backgrounds. These international workshops were used to examine the effectiveness of NBS to address UCC and foster NBS implementation towards circular urban water management. A major outcome was the identification of the two most relevant challenges for water resources in urban areas: ‘Restoring and maintaining the water cycle’ (UCC1) and ‘Water and waste treatment, recovery, and reuse’ (UCC2). s Moreover, significant synergies with ‘Nutrient recovery and reuse’, ‘Material recovery and reuse’, ‘Food and biomass production’, ‘Energy efficiency and recovery’, and ‘Building system recovery’ were identified. Additionally, the paper presents real-life case studies to demonstrate how different NBS and supporting units can contribute to the UCC. Finally, a case-based semi-quantitative assessment of the presented NBS was performed. Most notably, this paper identifies the most typically employed NBS that enable processes for UCC1 and UCC2. While current consensus is well established by experts in individual NBS, we presently highlight the potential to address UCC by combining different NBS and synergize enabling processes. This study presents a new paradigm and aims to enhance awareness on the ability of NBS to solve multiple urban circularity issues.

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Section: Water and Waste Treatment Recovery And Reuse (Ucc2)mentioning

confidence: 99%

Management of Urban Waters with Nature-Based Solutions in Circular Cities—Exemplified through Seven Urban Circularity Challenges

Oral

Radinja

Rizzo³

et al. 2021

Water

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“…Deciding on the best locations for harvesting rural rainstorm flows in Bengal (India) was done by linking a GIS system with the AHP method using three main criteria (land slope, soil type and stream drainage order) [147]. For rainwater harvesting in urban areas, [148] shows a visual method for selecting Pareto optimal options considering seven criteria related to both rainwater harvesting and flood reduction. Options for retrofitting water recovery plants (from wastewater flows) were selected using SAW and three criteria (water quality, robustness, economic) [149].…”

Section: Focus On Water Supplymentioning

confidence: 99%

Uptake and Dissemination of Multi-Criteria Decision Support Methods in Civil Engineering—Lessons from the Literature

Bruen

2021

Applied Sciences

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The SCOPUS and Wed of Science bibliometric databases were searched for papers related to the use of multi-criteria methods in civil engineering related disciplines. The results were analyzed for information on the reported geographical distribution of usage, the methods used, the application areas with most usage and the software tools used. There was a wide geographical distribution of usage with all northern hemisphere continents well represented. However, of the very many methods available, a small number seemed to dominate usage, with the Analytic Hierarchy Process being the most frequently used. The application areas represented in the documents found was not widely spread and mainly seemed to be focused on issues such as sustainability, environment, risk, safety and to some extent project management, with less usage on other areas. This may be due to individual engineer’s choices in relation to if and how to disseminate the results of their work and to their choice of keywords and titles that determine if their publications are selected in bibliographic searches and thus more visible to a wider readership. A comparison with more topic focused searches, relating to Bridge Design, Earthquake Engineering, Cladding, Sewage Treatment, Foundation design, Truss design, Water Supply, Building Energy, Route selection and Transport mode showed very different results. Analysis of the papers in this area indicated that the full range of supporting software available for multi-criteria decision analysis (many listed in this paper) may not be fully appreciated by potential users.

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“…Rainfall data are unique for each location, and could be used as-is if their attributes (timestep and number of records) is sufficient (e.g., [20]). Rainfall data could also be synthesized [16], or generated stochastically [25].…”

Section: Model Frameworkmentioning

confidence: 99%

“…While in models aimed at optimizing tank size or assessing potable water savings daily timesteps usually suffice [6], a sub-hourly timestep is required in order to enable the use of a simulation's output as part of urban drainage models [14,15]. In such high-temporal resolution, rainfall and water demand data can be difficult to acquire and need to be synthesized or assumed to be deterministic [16].…”

Section: Introductionmentioning

confidence: 99%

Dual Benefit of Rainwater Harvesting—High Temporal-Resolution Stochastic Modelling

Snir¹,

Friedler²

2021

Water

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The objective of the presented study was to develop a high-temporal-resolution stochastic rainwater harvesting (RWH) model for assessing the dual benefits of RWH: potable water savings and runoff reduction. Model inputs of rainfall and water demand are used in a stochastic manner, maintaining their natural pattern, while generating realistic noise and temporal variability. The dynamic model solves a mass-balance equation for the rainwater tank, while logging all inflows and outflows from it for post-simulation analysis. The developed model can simulate various building sizes, roof areas, rainwater tank volumes, controlled release policies, and time periods, providing a platform for assessing short- and long-term benefits. Standard passive rainwater harvesting operation and real-time control policies (controlled release) are demonstrated for a 40-apartment building with rainfall data typical for a Mediterranean climate, showing the system’s ability to supply water for non-potable uses, while reducing runoff volumes and flows, with the latter significantly improved when water is intentionally released from the tank prior to an expected overflow. The model could be used to further investigate the effects of rainwater harvesting on the urban water cycle, by coupling it with an urban drainage model and simulating the operation of a distributed network of micro-reservoirs that supply water and mitigate floods.

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Quantifying the performance of dual-use rainwater harvesting systems

Cited by 20 publications

References 24 publications

Management of Urban Waters with Nature-Based Solutions in Circular Cities—Exemplified through Seven Urban Circularity Challenges

Management of Urban Waters with Nature-Based Solutions in Circular Cities—Exemplified through Seven Urban Circularity Challenges

Uptake and Dissemination of Multi-Criteria Decision Support Methods in Civil Engineering—Lessons from the Literature

Dual Benefit of Rainwater Harvesting—High Temporal-Resolution Stochastic Modelling

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