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    Treatment performance variability in two at-source stormwater treatment systems (2020)

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    Pages from Waterways conf abstracts 2020-2.pdf (167.8Kb)
    Type of Content
    Conference Contributions - Other
    UC Permalink
    https://hdl.handle.net/10092/102853
    
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    • Engineering: Conference Contributions [2344]
    Authors
    Bilek F
    Hannah M
    Cochrane, Thomas cc
    Charters, Frances
    O'Sullivan, Aisling cc
    show all
    Abstract

    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 are expected to follow STS installation; however, this is often not the case due to variability in treatment performance. This study seeks to identify and quantify the impact of the most influential variables affecting the performance at-source STSs. Two media filtration STSs, which target the removal of dissolved Zn from galvanized roof runoff, were tested at the University of Canterbury in Christchurch. Both STSs were located on different sections of the same roof, with variations of media: one incorporated fresh mussel shells, dried and crushed, while the second incorporated pre-crushed, weathered mussel shells. Runoff was analysed for total and dissolved metals. Treatment variability of dissolved zinc was higher within the ‘fresh-shell’ STS than the ‘weathered shells’ STS, with removal efficiency ranging respectively from 20% to 45% (average 34%), and 71% to 87% (average 82%). Treatment performance of the ‘fresh-shell’ STS may be influenced by the smooth media surface that is comparatively un-weathered, providing fewer binding sites. Variability in treatment from both STSs stems from variation in dissolved zinc concentrations in runoff.

    Citation
    Bilek F, Cochrane T, Charters F, O'Sullivan A, Hannah M (2020). Treatment performance variability in two at-source stormwater treatment systems. University of Canterbury: 2020 Waterways Postgraduate Conference. 11/11/2020.
    This citation is automatically generated and may be unreliable. Use as a guide only.
    Keywords
    Stormwater quality characterisation; Ecological treatment systems for water quality
    ANZSRC Fields of Research
    40 - Engineering::4011 - Environmental engineering::401102 - Environmentally sustainable engineering
    40 - Engineering::4011 - Environmental engineering::401106 - Waste management, reduction, reuse and recycling
    37 - Earth sciences::3707 - Hydrology::370705 - Urban hydrology
    37 - Earth sciences::3707 - Hydrology::370702 - Ecohydrology
    40 - Engineering::4005 - Civil engineering::400505 - Construction materials
    Rights
    All rights reserved unless otherwise stated
    http://hdl.handle.net/10092/17651

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