Low-energy greywater treatment and urban greening using green walls - presented by Dr Jayaprakash Saththasivam PhD and Dr. Hamish Mackey

Low-energy greywater treatment and urban greening using green walls

Jayaprakash Saththasivam and Hamish Mackey

Dr Jayaprakash Saththasivam PhDDr. Hamish Mackey
Green & Sustainable Science & Engineering
Host
Elsevier
DateJune 20, 2024
Elsevier
This seminar was not recorded.
Low-energy greywater treatment and urban greening using green walls
Dr Jayaprakash Saththasivam PhD
Jayaprakash Saththasivam
Hamad bin Khalifa University
Dr. Hamish Mackey
Hamish Mackey
University of Canterbury

In the water-scarce Middle East, particularly in Qatar, urbanization heavily relies on energy-intensive desalination. This research explores an innovative solution: integrating greywater treatment within vegetated green walls for sustainable urban greening. By combining the biofiltration power of plants with the adsorption properties of green wall media, this approach aims to purify lightly polluted greywater from buildings for reuse in landscaping, cleaning, or even non-potable applications. The research delves into several key areas: (i) identifying hardy, attractive plants that thrive in the Qatari climate and greywater (ii) testing lightweight media that excel in drainage and plant support, with the possibility of using local waste for added sustainability and (iii) evaluating the treatment effectiveness of various plant-media combinations under various experimental conditions. This study also assesses the real-world feasibility of the system through a pilot-scale outdoor green wall, demonstrating its potential to reduce desalination dependence, enhance water security, and contribute to a greener, more sustainable urban landscape in the Middle East.

References
  • 1.
    H. M. Abd-ur-Rehman et al. (2023) Removal of hydrophilic, hydrophobic, and charged xenobiotic organic compounds from greywater using green wall media. Water Research
  • 2.
    H. M. Abd-ur-Rehman et al. (2022) The comparative performance of lightweight green wall media for the removal of xenobiotic organic compounds from domestic greywater. Water Research
  • 3.
    A. Galvão et al. (2022) Green walls with recycled filling media to treat greywater. Science of The Total Environment
  • 4.
    S. Pradhan et al. (2019) Greywater treatment by ornamental plants and media for an integrated green wall system. International Biodeterioration & Biodegradation
  • 5.
    S. Pradhan et al. (2018) Greywater recycling in buildings using living walls and green roofs: A review of the applicability and challenges. Science of The Total Environment
  • 6.
    S. Pradhan et al. (2019) Performance evaluation of various individual and mixed media for greywater treatment in vertical nature-based systems. Chemosphere
  • 7.
    M. Gholami et al. (2023) Nutrient treatment of greywater in green wall systems: A critical review of removal mechanisms, performance efficiencies and system design parameters. Journal of Environmental Management
  • 8.
    S. M. Anangadan et al. (2024) Evaluation of Greywater as a Sustainable Source of Irrigation for Ornamental Crops in Green Walls—A Study of Plant and Soil Using Ruellia tuberosa. Sustainability
Grants
    Qatar National Research FundNPRP12S-0226-190160
Cite as
J. Saththasivam and H. Mackey (2024, June 20), Low-energy greywater treatment and urban greening using green walls
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