• myGriffith
    • Staff portal
    • Contact Us⌄
      • Future student enquiries 1800 677 728
      • Current student enquiries 1800 154 055
      • International enquiries +61 7 3735 6425
      • General enquiries 07 3735 7111
      • Online enquiries
      • Staff phonebook
    View Item 
    •   Home
    • Griffith Research Online
    • Conference outputs
    • View Item
    • Home
    • Griffith Research Online
    • Conference outputs
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

  • All of Griffith Research Online
    • Communities & Collections
    • Authors
    • By Issue Date
    • Titles
  • This Collection
    • Authors
    • By Issue Date
    • Titles
  • Statistics

  • Most Popular Items
  • Statistics by Country
  • Most Popular Authors
  • Support

  • Contact us
  • FAQs
  • Admin login

  • Login
  • Media for Enhanced Phosphorus Removal from Secondary Wastewater Effluent

    Thumbnail
    View/Open
    GreenwayPUB1899.pdf (414.6Kb)
    Author
    Greenway, Margaret
    Year published
    2016
    Metadata
    Show full item record
    Abstract
    Constructed subsurface flow wetlands have the potential for high phosphorus removal through chemical adsorption onto the media. Over the past decade researchers at Griffith University, Australia have been using 240 L mesocosms to investigate the long term sustainability and performance efficiency of using different soil media and plant species to maximise nutrient removal from secondary wastewater effluent. The performance efficiency of 15 different media mixes including amendments for enhanced phosphorus adsorption, and 10 different plant species have been investigated. Total phosphorus removal was highest (94–99%) in sand ...
    View more >
    Constructed subsurface flow wetlands have the potential for high phosphorus removal through chemical adsorption onto the media. Over the past decade researchers at Griffith University, Australia have been using 240 L mesocosms to investigate the long term sustainability and performance efficiency of using different soil media and plant species to maximise nutrient removal from secondary wastewater effluent. The performance efficiency of 15 different media mixes including amendments for enhanced phosphorus adsorption, and 10 different plant species have been investigated. Total phosphorus removal was highest (94–99%) in sand media amended with water treatment residuals (WTR), followed by ‘brickies loam’ (92%), then sand amended with red mud or krasnozems (86–89%) and lowest in gravel (44%). Phosphorus removal using sand with WTR had the greatest efficiency when treating influent with P concentrations ranging from 0.5 to 8 mg/L (90–99%). The addition of biochar to sand did not enhance P removal during a two year trial. Leaching and export of P occurred from the media either after heavy rain or loading with stormwater having low P concentrations (<0.06 mg/L). However, following such ‘flushing events’ P sorption and hence P removal efficiency were enhanced. Mature plant assemblages could uptake up to 16gP/m2/year. Of the herbaceous plants the perennial grasses Pennisetum alopecuroides and Vetiver-Chrysopogon zizanioides, and the sedge Carex appressa had the highest biomass. The woody species Callistemon pachyphyllus and Melaleucaquinquenervia had the highest carbon sequestration (1000 g C/m2/year). Thus various sandy loam media can be used to enhance long term effective phosphorus removal, and plants can be used for carbon credits.
    View less >
    Conference Title
    World Environmental and Water Resources Congress 2016: Professional Development, Innovative Technology, International Perspectives, and History and Heritage
    DOI
    https://doi.org/10.1061/9780784479889.043
    Copyright Statement
    © 2016 American Society of Civil Engineers (ASCE). This is the author-manuscript version of this paper. Reproduced in accordance with the copyright policy of the publisher. Please refer to the journal's website for access to the definitive, published version.
    Subject
    Wastewater Treatment Processes
    Publication URI
    http://hdl.handle.net/10072/336801
    Collection
    • Conference outputs

    Footer

    Social media

    • Facebook
    • Twitter
    • YouTube
    • Instagram
    • Linkedin
    First peoples of Australia
    • Aboriginal
    • Torres Strait Islander

    Disclaimer

    • Privacy policy
    • Copyright matters
    • CRICOS Provider - 00233E

    Tagline

    • Gold Coast
    • Logan
    • Brisbane
    • Australia