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  • Evaluation of pathogen removal in a solar sludge drying facility using microbial indicators

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    97217_1.pdf (224.8Kb)
    Author(s)
    Shanahan, Emily F
    Roiko, Anne
    Tindale, Neil W
    Thomas, Michael P
    Walpole, Ronald
    Kurtboeke, D Ipek
    Griffith University Author(s)
    Roiko, Anne H.
    Year published
    2010
    Metadata
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    Abstract
    South East Queensland is one of the fastest growing regions in Australia with a correspondingly rapid increase in sewage production. In response, local councils are investing in more effective and sustainable options for the treatment and reuse of domestic and industrial effluents. A novel, evaporative solar dryer system has been installed on the Sunshine Coast to convert sewage sludge into a drier, usable form of biosolids through solar radiation exposure resulting in decreased moisture concentration and pathogen reduction. Solar-dried biosolids were analyzed for selected pathogenic microbial, metal and organic contaminants ...
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    South East Queensland is one of the fastest growing regions in Australia with a correspondingly rapid increase in sewage production. In response, local councils are investing in more effective and sustainable options for the treatment and reuse of domestic and industrial effluents. A novel, evaporative solar dryer system has been installed on the Sunshine Coast to convert sewage sludge into a drier, usable form of biosolids through solar radiation exposure resulting in decreased moisture concentration and pathogen reduction. Solar-dried biosolids were analyzed for selected pathogenic microbial, metal and organic contaminants at the end of different drying cycles in a collaborative study conducted with the Regional Council. Although fecal coliforms were found to be present, enteroviruses, parasites, E. coli, and Salmonella sp. were not detected in the final product. However, elevated levels of zinc and copper were still present which restricted public use of the biosolids. Dilution of the dried biosolids with green waste as well as composting of the biosolids is likely to lead to the production of an environmentally safe, Class A end-product.
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    Journal Title
    International Journal of Environmental Research and Public Health
    Volume
    7
    DOI
    https://doi.org/10.3390/ijerph7020565
    Copyright Statement
    © 2014 by the authors; licensee MDPI, author. This is an Open Access article distributed under the terms of the Creative Commons Attribution 3.0 Unported (CC BY 3.0) License (http://creativecommons.org/licenses/by/3.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
    Subject
    Environmental management not elsewhere classified
    Publication URI
    http://hdl.handle.net/10072/64703
    Collection
    • Journal articles

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