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Non-Potable Water Quality Assessment Results for Water Conservation in the Context of a Medical Facility Case Study

Author

Listed:
  • Geraldine Seguela

    (Sustainable & Resilient Built Environment Research Group, Cardiff School of Art & Design, Cardiff Metropolitan University, Western Avenue, Cardiff CF5 2YB, UK)

  • John Richard Littlewood

    (Sustainable & Resilient Built Environment Research Group, Cardiff School of Art & Design, Cardiff Metropolitan University, Western Avenue, Cardiff CF5 2YB, UK)

  • George Karani

    (Environment & Public Health Research Group, Cardiff School of Health Sciences, Cardiff Metropolitan University, Western Avenue, Cardiff CF5 2YB, UK)

Abstract
This paper discusses recycled non-potable water (NPW) quality test results from an existing, decentralized, treated air handling unit (AHU) air conditioning (A/C) condensate water (CW) system in a medical facility case study (MFCS) in Abu Dhabi (AD), the capital city of the United Arab Emirates (UAE). The MFCS, a 364-bed hospital that opened in 2015 with 50% landscaping, is targeting 100% non-clinical/non-potable water use for landscape irrigation (LI) from 179,700 m 3 /year treated CW, which is a by-product of AHU A/C. For seven months per year, however, a deficit of 14,340 m 3 AHU A/C CW occurs, so costly and non-sustainable, desalinated potable water is required. The proposed change project, using a mixed methodology, develops a sustainable NPW strategy, including a protocol to extract water from recycled, onsite, organic food waste, fire sprinkler pump test water (FSPTW), and reverse osmosis reject water (RORW) to meet the AHU A/C CW shortfall by adapting, enhancing, and monitoring the medical facility’s NPW treatment system. The hospital’s sustainability strategy implemented by the author could be legislated and mandated by the relevant authority for regional medical facilities, taking the form of a water conservation protocol including the classification and characterization of different types of NPW to understand their impact on LI, human health, and building water systems. The outcome is a novel change in practice to reuse 25,141 m 3 /year RORW and 1136 m 3 /year FSPTW as makeup water for the A/C CW shortfall in winter. The results identify key considerations to be addressed by the target audience (building owners, landscape contractors, and facility managers) when reusing NPW to protect the environment against soil degradation—a major aspect of decarbonization.

Suggested Citation

  • Geraldine Seguela & John Richard Littlewood & George Karani, 2022. "Non-Potable Water Quality Assessment Results for Water Conservation in the Context of a Medical Facility Case Study," Sustainability, MDPI, vol. 14(11), pages 1-26, May.
    • Handle: RePEc:gam:jsusta:v:14:y:2022:i:11:p:6578-:d:825791
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    References listed on IDEAS

    as
    1. Kolin Loveless & Aamir Farooq & Noreddine Ghaffour, 2013. "Collection of Condensate Water: Global Potential and Water Quality Impacts," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 27(5), pages 1351-1361, March.
    2. Dorte Verner, 2012. "Adaptation to a Changing Climate in the Arab Countries : A Case for Adaptation Governance and Leadership in Building Climate Resilience," World Bank Publications - Books, The World Bank Group, number 12216.
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