University of Canterbury Home
    • Admin
    UC Research Repository
    UC Library
    JavaScript is disabled for your browser. Some features of this site may not work without it.
    View Item 
    1. UC Home
    2. Library
    3. UC Research Repository
    4. Faculty of Engineering | Te Kaupeka Pūhanga
    5. Engineering: Journal Articles
    6. View Item
    1. UC Home
    2.  > 
    3. Library
    4.  > 
    5. UC Research Repository
    6.  > 
    7. Faculty of Engineering | Te Kaupeka Pūhanga
    8.  > 
    9. Engineering: Journal Articles
    10.  > 
    11. View Item

    Performance of downpipe treatment system for removal of dissolved metals from roof runoff (2021)

    Thumbnail
    View/Open
    Accepted version (468.6Kb)
    Type of Content
    Journal Article
    UC Permalink
    https://hdl.handle.net/10092/102034
    
    ISSN
    2352-1864
    Collections
    • Engineering: Journal Articles [1644]
    Authors
    Charters F
    Gregoire Carai N
    Cochrane T
    show all
    Abstract

    Untreated metal roof runoff can contribute elevated zinc and copper to receiving waterways, with associated ecotoxic impacts on the aquatic ecosystem. The majority of the metals in roof runoff are in dissolved form, which can be difficult to remove with conventional stormwater treatment systems. Treatment materials such as limestone and zeolite are capable of removing dissolved metals, but most research to date has only assessed the performance of such materials using synthetic runoff and long contact times. This study assessed the performance of limestone, zeolite and waste mussel shells in a vertical downpipe configuration with short contact time using actual metal roof runoff. Metal removal was compared under flowrates of 1 L/min and 3 L/min, material compaction level (less/more), and material depth (1 m and 0.5 m). A 93-99% reduction was achieved in dissolved zinc by all treatment materials for all flowrates, compaction levels and depths. Higher variance in dissolved Cu removal rates were observed, with material depth found to have the greatest influence on performance: 84-99% removal rates were achieved by the three materials at 1 m depth, but for 0.5 m depths, 44-99%, 34-92%, and 47-93% removal were achieved by zeolite, limestone, and waste mussel shells respectively. The mussel shell removal performance was comparable to zeolite and limestone, yet it provides the added benefit of using a waste resource that would otherwise be disposed of to landfill. While this study demonstrates the potential of waste mussel shells for dissolved metal treatment, long term field trials and experimental analysis of the removal mechanisms of waste mussel shells would enable optimisation of this treatment technology.

    Citation
    Charters F, Gregoire Carai N, Cochrane T (2021). Performance of downpipe treatment system for removal of dissolved metals from roof runoff. Environmental Technology and Innovation.
    This citation is automatically generated and may be unreliable. Use as a guide only.
    Keywords
    waste mussel shells; limestone; zeolite; zinc; copper
    ANZSRC Fields of Research
    40 - Engineering::4004 - Chemical engineering::400411 - Water treatment processes
    41 - Environmental sciences::4105 - Pollution and contamination::410504 - Surface water quality processes and contaminated sediment assessment
    41 - Environmental sciences::4103 - Environmental biotechnology::410399 - Environmental biotechnology not elsewhere classified
    Rights
    All rights reserved unless otherwise stated
    http://hdl.handle.net/10092/17651

    Related items

    Showing items related by title, author, creator and subject.

    • Removal of zinc from surface runoff by using recycled mussel shell waste as treatment media, with and without heat treatment 

      Odeh M; Doscher C; Cochrane, Thomas (Elsevier BV, 2022)
      Stormwater control measures (SCMs) are essential to manage runoff in urban areas. Mussel shell waste has been recently proposed as sustainable treatment media in SCM to remove metals from runoff. In this study, a group ...
    • Feasibility of waste mussel shells as engineered living roof substrate component 

      Larcher S; Pratchett S; Edwards D; O'Sullivan, Aisling (2020)
      Living roofs are an increasingly popular strategy to reduce the demand on stormwater drainage networks, and mitigate the harmful effects of urban stormwater contaminants on receiving waterways. In addition to their direct ...
    • Treatment performance variability in two at-source stormwater treatment systems 

      Bilek F; Hannah M; Cochrane, Thomas; Charters, Frances; O'Sullivan, Aisling (2020)
      Stormwater treatment systems (STSs) are being integrated across our urban landscapes in New Zealand and around the world with the intent of contaminant removal. Downstream water quality and ecological health improvements ...
    Advanced Search

    Browse

    All of the RepositoryCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsThesis DisciplineThis CollectionBy Issue DateAuthorsTitlesSubjectsThesis Discipline

    Statistics

    View Usage Statistics
    • SUBMISSIONS
    • Research Outputs
    • UC Theses
    • CONTACTS
    • Send Feedback
    • +64 3 369 3853
    • ucresearchrepository@canterbury.ac.nz
    • ABOUT
    • UC Research Repository Guide
    • Copyright and Disclaimer
    • SUBMISSIONS
    • Research Outputs
    • UC Theses
    • CONTACTS
    • Send Feedback
    • +64 3 369 3853
    • ucresearchrepository@canterbury.ac.nz
    • ABOUT
    • UC Research Repository Guide
    • Copyright and Disclaimer