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    An Innovative Method for Spatial Quantification of Contaminant Buildup and Wash-off from Impermeable Urban Surfaces

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    IWA-2871 Daniel Wicke_Full paper2.pdf (1.942Mb)
    Author
    Wicke, D.
    Cochrane, T.A.
    O'Sullivan, A.D.
    Date
    2010
    Permanent Link
    http://hdl.handle.net/10092/4137

    A method was developed that employs thin boards (0.56 m2) comprising different paving materials (2 asphalt types and concrete) typically used in urban environments. Boards can be placed at various locations of interest within an urban catchment to investigate accumulation of contaminants over specified periods of time. Boards are then placed under a rainfall simulator in order to generate runoff under controlled conditions. We successfully applied this method to investigate contaminant build-up at a University carpark, showing accumulation mainly occurred within the first 6 days. Resulting wash-off curves were used to determine coefficients for build-up and wash-off functions (maximum build-up, half-saturation time and wash-off coefficient) that can be applied to model the fate of contaminants in stormwater models (e.g. SWMM). Results also showed that concentrations of total suspended solids (TSS) are linearly correlated with total metal concentrations.

    Subjects
    contaminant build-up
     
    urban catchment model
     
    heavy metals
     
    stormwater runoff
     
    Fields of Research::290000 Engineering and Technology::290800 Civil Engineering::290802 Water and sanitary engineering
     
    Fields of Research::290000 Engineering and Technology::291100 Environmental Engineering
    Collections
    • Engineering: Conference Contributions [1816]
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