Economic analysis of hybrid rainwater-greywater systems between demand and supply sides based on cooperative theory

Chen, Wei‐Lun; Gao, Weijun; Wei, Xindong; Gong, Yu

doi:10.1016/j.jclepro.2022.135283

Cited by 4 publications

(1 citation statement)

References 46 publications

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“…The variability in the quality and quantity of both rainwater and greywater leads to thorough treatment processes due to the presence of various pathogens. Chen et al [9] investigate the economic feasibility of hybrid systems by employing cooperative theory, focusing on a case study in Japan. These systems are found to be economically feasible with government subsidies.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Greywater Recovery Systems in European Single-Family Buildings: Economic and Environmental Impacts

Rajski,

Englart,

Sohani

2024

Sustainability

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This study explores the integration of greywater recovery systems (GRSs) within single-family buildings across European countries. The analysis evaluates the impacts of these systems from multiple perspectives: potable water conservation, economic feasibility, energy consumption, and environmental impact. Employing life cycle cost (LCC) and net present value (NPV) analyses, the research assesses the economic viability of these systems compared to standard water installations. Positive NPV is observed in countries such as Belgium, Germany, Denmark, Finland, and Norway, according to the base scenario. Additionally, the implementation of subsidies can enhance economic incentives for adopting GRSs by reducing the payback period (PBP). Significant findings include reductions in potable water demand by up to 43.0%, and energy savings of up to 42.6% are also observed with the use of GRSs. Additionally, notably lower carbon dioxide emissions (CDEs) were reported, with reductions being directly proportional to the decreases in energy use. This holistic approach aims to establish frameworks for decision-making processes, emphasizing that economic and environmental aspects are mutually complementary and significant.

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Section: Introductionmentioning

confidence: 99%

Analysis of Greywater Recovery Systems in European Single-Family Buildings: Economic and Environmental Impacts

Rajski,

Englart,

Sohani

2024

Sustainability

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Technical and Economic Feasibility Study of Greywater Reuse System Using the Bim Methodology

Andrade,

do Carmo,

Faisca

2023

Lecture Notes in Civil Engineering

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Study on the performance temporal variation of rainwater harvesting systems based on the dynamic change of rainfall pattern and domestic water demands

Liu,

Chen,

Zhang

2024

Sci Rep

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Rainwater harvesting systems (RWHs) in buildings are benefits in alleviating urban water scarcity. However, climate change and changes in building water demand affect the expected performance of RWHs over their life cycle. Previous studies have only focused on the adaptability of RWHs to climate change without considering the changes in building water demand. To address this issue, this study explores the impact of combined changes in precipitation patterns and domestic water demand on the water-saving efficiency of RWHs over their 25-year life cycle based on historical observations. Three cities in Japan were selected as case studies. The results indicate that during 25-year life cycle of RWHs, precipitation in different cities in Japan shows an increasing trend, while domestic water demand shows a decreasing trend. Such trend resulted in a change of -2.90–4.02% in the water-saving efficiency of the established RWHs and a change of -2.90–3.82% in the theoretical optimal water-saving efficiency, and these effects were greater in RWHs in buildings with high non-potable water demands. Therefore, RWHs in buildings with low non-potable water demand can appropriately reduce the rainwater tanks, while RWHs in buildings with high non-potable water demand must increase the rainwater tank size to eliminate this adverse effect. Furthermore, both reductions in domestic water demand and increases in precipitation have a positive effect on the water-saving efficiency of RWHs. However, when both domestic water demand and precipitation increase or decrease simultaneously, the change in water-saving efficiency of RWHs is related to the non-potable water demand of the building. This study can provide data support and theoretical evidence for the further implementation of RWHs under climate change, and can help stakeholders to optimize and update RWHs to ensure system feasibility. Supplementary Information The online version contains supplementary material available at 10.1038/s41598-024-75843-x.

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Economic analysis of hybrid rainwater-greywater systems between demand and supply sides based on cooperative theory

Cited by 4 publications

References 46 publications

Analysis of Greywater Recovery Systems in European Single-Family Buildings: Economic and Environmental Impacts

Analysis of Greywater Recovery Systems in European Single-Family Buildings: Economic and Environmental Impacts

Technical and Economic Feasibility Study of Greywater Reuse System Using the Bim Methodology

Study on the performance temporal variation of rainwater harvesting systems based on the dynamic change of rainfall pattern and domestic water demands

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