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Assessment of residential rainwater harvesting efficiency for meeting non-potable water demands in three climate conditions

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  • Rashidi Mehrabadi, Mohammad Hossein
  • Saghafian, Bahram
  • Haghighi Fashi, Fereshte

Abstract

Global demand for clean water supplies is on the rise due to population growth. This is also true in most cities of Iran. Non-conventional water resources must be developed to partially offset the increasing demand. In this study, the applicability and performance of rainwater harvesting (RWH) systems to supply daily non-potable water were assessed. Storage of rain falling on the roofs of residential buildings and directed into installed tanks was simulated in three cities of varying climatic conditions, namely Tabriz (Mediterranean climate), Rasht (humid climate), and Kerman (arid climate). Daily rainfall statistics for a period of 53 years as well as the information on the contributing roof area, available tank volumes and non-potable water demand were collected in each city. Typical residential buildings with roof areas of 60, 120, 180 and 240m2 with an average of four residents in each house were considered for the study. According to the results in humid climate, it is possible to supply at least 75% of non-potable water demand by storing rainwater from larger roof areas for a maximum duration of 70% of the times. For roofs with small surface area, the supply meets 75% of non-potable water demand for a maximum duration of 45% of the times. Moreover, for Mediterranean climate, it is possible to supply at least 75% of non-potable water demand in buildings with larger roof areas for a maximum duration of 40% of the times. It is also found that in arid climate, similar duration is only 23% of the times.

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  • Rashidi Mehrabadi, Mohammad Hossein & Saghafian, Bahram & Haghighi Fashi, Fereshte, 2013. "Assessment of residential rainwater harvesting efficiency for meeting non-potable water demands in three climate conditions," Resources, Conservation & Recycling, Elsevier, vol. 73(C), pages 86-93.
    • Handle: RePEc:eee:recore:v:73:y:2013:i:c:p:86-93
    DOI: 10.1016/j.resconrec.2013.01.015
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    References listed on IDEAS

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    1. Imteaz, Monzur Alam & Rahman, Ataur & Ahsan, Amimul, 2012. "Reliability analysis of rainwater tanks: A comparison between South-East and Central Melbourne," Resources, Conservation & Recycling, Elsevier, vol. 66(C), pages 1-7.
    2. Eroksuz, Erhan & Rahman, Ataur, 2010. "Rainwater tanks in multi-unit buildings: A case study for three Australian cities," Resources, Conservation & Recycling, Elsevier, vol. 54(12), pages 1449-1452.
    3. Ghisi, Enedir & Tavares, Davi da Fonseca & Rocha, Vinicius Luis, 2009. "Rainwater harvesting in petrol stations in Brasília: Potential for potable water savings and investment feasibility analysis," Resources, Conservation & Recycling, Elsevier, vol. 54(2), pages 79-85.
    4. Imteaz, Monzur Alam & Ahsan, Amimul & Naser, Jamal & Rahman, Ataur, 2011. "Reliability analysis of rainwater tanks in Melbourne using daily water balance model," Resources, Conservation & Recycling, Elsevier, vol. 56(1), pages 80-86.
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    1. Monika Zdeb & Justyna Zamorska & Dorota Papciak & Agata Skwarczyńska-Wojsa, 2021. "Investigation of Microbiological Quality Changes of Roof-Harvested Rainwater Stored in the Tanks," Resources, MDPI, vol. 10(10), pages 1-19, October.
    2. Imteaz, Monzur Alam & Ahsan, Amimul & Shanableh, Abdallah, 2013. "Reliability analysis of rainwater tanks using daily water balance model: Variations within a large city," Resources, Conservation & Recycling, Elsevier, vol. 77(C), pages 37-43.
    3. Silva, Cristina Matos & Sousa, Vitor & Carvalho, Nuno Vaz, 2015. "Evaluation of rainwater harvesting in Portugal: Application to single-family residences," Resources, Conservation & Recycling, Elsevier, vol. 94(C), pages 21-34.
    4. Jing, Xueer & Zhang, Shouhong & Zhang, Jianjun & Wang, Yujie & Wang, Yunqi, 2017. "Assessing efficiency and economic viability of rainwater harvesting systems for meeting non-potable water demands in four climatic zones of China," Resources, Conservation & Recycling, Elsevier, vol. 126(C), pages 74-85.
    5. Karim, Md. Rezaul & Bashar, Mohammad Zobair Ibne & Imteaz, Monzur Alam, 2015. "Reliability and economic analysis of urban rainwater harvesting in a megacity in Bangladesh," Resources, Conservation & Recycling, Elsevier, vol. 104(PA), pages 61-67.

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