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    Appendix 5. Autopsy and cleaning of reverse osmosis elements affected by harmful algal bloom-contaminated seawater.

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    Date
    2017
    Author
    Peña, Nuria
    Chesters, Steve
    Dixon, Mike B.
    Boerlage, Siobhan F. E.
    Status
    Published
    
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    Abstract
    Following an algal bloom, if a change is observed in the reverse osmosis (RO) performance, an initial visual plant inspection should be carried out, including looking at and removing cartridge filters and membrane elements from different positions in the pressure vessel. Fouling may be a combination of organic, biofouling, particulate, and metal hydroxide. Biofouling is often slimy or gelatinous which may be accompanied by a bad smell while iron fouling is a reddish brown deposit. Figure 1 shows evidence of biological fouling on a cartridge filter and inside a pressure vessel following an algal bloom event. If it is obvious that there is severe fouling, membrane autopsy would be the most appropriate tool for identifying the nature of the foulant, and the best cleaning protocol for removal of the foulant. Autopsy results would be interpreted in conjunction with an analysis of plant performance data......
    Resource URL
    http://hab.ioc-unesco.org/index.php?option=com_oe&task=viewDocumentRecord&docID=22885
    Title of Report
    Harmful Algal Blooms (HABs) and Desalination: a Guide to Impacts, Monitoring and Management.
    Editor(s) of Report
    Anderson, D.M.
    Boerlage, S.F.E.
    Dixon, M.B.
    Page Range
    pp.519-525
    Publisher
    Intergovernmental Oceanographic Commission of UNESCO
    Paris, France
    Series;Nr
    Intergovernmental Oceanographic Commission Manuals and Guides;78
    Document Language
    en
    Best Practice Type
    Manual
    Citation
    Peña, N.; Chesters, S.; Dixon, M. and Boerlage, S.F.E. (2017) Appendix 5. Autopsy and cleaning of reverse osmosis elements affected by harmful algal bloom-contaminated seawater. In: Harmful Algal Blooms (HABs) and Desalination: A Guide to Impacts, Monitoring and Management. (eds. Anderson D. M.; Boerlage, S. F. E. and Dixon, M.B.) Paris, France, Intergovernmental Oceanographic Commission of UNESCO, pp.519-225. (IOC Manuals and Guides No. 78). DOI: http://dx.doi.org/10.25607/OBP-208
    URI
    http://hdl.handle.net/11329/649
    http://dx.doi.org/10.25607/OBP-208
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    • HAB Methodology Documents [28]

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