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    Removal of Sediment and Nutrient from Stormwater Using Geotextile and Mix-medium in a Laboratory Scale Catch Basin Insert

    Access Status
    Fulltext not available
    Authors
    Anwar, Faisal
    Chen, Weizhuang
    Alam, Md Zahanggir
    Date
    2020
    Type
    Conference Paper
    
    Metadata
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    Citation
    Anwar, A.H.M.F. and Chen, W. and Alam, M.Z. 2020. Removal of Sediment and Nutrient from Stormwater Using Geotextile and Mix-medium in a Laboratory Scale Catch Basin Insert. In Water and Environment Technology Online Conference, Nov 7-8 2020, online: Japan Society on Water Environment (JSWE).
    Source Conference
    Water and Environment Technology Conference Online2020
    Faculty
    Faculty of Science and Engineering
    School
    School of Civil and Mechanical Engineering
    URI
    http://hdl.handle.net/20.500.11937/82052
    Collection
    • Curtin Research Publications
    Abstract

    The urban stormwater runoff carries significant amount of sediments and nutrients and discharges into the nearby water bodies. Among the best management practices (BMPs), catch basin insert (CBI) is a promising technology that can remove stormwater pollutants at source. We have investigated the one-stage CBI to remove gross pollutants from stormwater but it was unable to remove dissolved pollutants. Next, we have tested a mix-medium of biochar and alum sludge in batches to remove nutrients from water. In this study, a modified two-stage CBI was experimented in a laboratory column using non-woven geotextile and a mix-medium of biochar and alum sludge. A synthetic stormwater composed of sediments (0-300µm) and nutrients (NH3-N, NO3-N, NO2-N, PO4-P) (1-5mg/L) was pumped into the column at flowrate of 5-10 mL/min. The column effluent was collected at predefined time interval and measured for total suspended solid (TSS) and nutrient concentrations. The results revealed that TSS removal was higher (>90%) in coarse sediments (>150 µm) and the nutrient removal was significant except for NO3-N. The PO4-P removal (98-100%) was found highest followed by NH3-N (97-98%) and NO2-N removal (94-96%). However, the flow rate did not show significant effect on nutrient removal using the mix-medium.

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