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Fouling characteristics and their implications on cleaning of a FO-RO pilot process for treating brackish surface water

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dc.contributor.authorChun, Y.
dc.contributor.authorZaviska, F.
dc.contributor.authorSung Jo, K.
dc.contributor.authorMulcahy, D.
dc.contributor.authorYang, E.
dc.contributor.authorKim, I.S.
dc.contributor.authorZou, L.
dc.date.issued2016
dc.description.abstractIn this study, a laboratory pilot scale forward osmosis-reverse osmosis (FO-RO) hybrid system was used to desalinate both actual and spiked brackish surface water (BSW). An overall performance evaluation was conducted and the membrane foulings were characterised by comprehensive techniques. Severe flux decline was observed during the treatment of high scaling/fouling potential feed solutions. It was found that when the raw BSW was used as feed, the flux can be completely recovered by hydraulic cleaning. When the raw BSW was spiked with nutrients and/or scaling ions for accelerated scaling and biofouling, more severe flux decline was observed. Inorganic scaling caused by calcium and phosphate, and their interactions with organic constituents in the feed solutions were the dominant cause of the declined system performance. For the spiked feed water, the combined physical and chemical cleaning using two chemical agents was not able to restore reduced flux to its initial value. This study identified the need for implementing a sufficient cleaning strategy targeting different membrane foulants, particularly for inorganic scalants; as well as confirms the need of fouling-resistant membrane.
dc.identifier.citationDesalination, 2016; 394:91-100
dc.identifier.doi10.1016/j.desal.2016.04.026
dc.identifier.issn0011-9164
dc.identifier.issn1873-4464
dc.identifier.urihttps://hdl.handle.net/11541.2/119157
dc.language.isoen
dc.publisherElsevier
dc.relation.fundingNational Centre of Excellence in Desalination Australia
dc.relation.fundingKorean Industrial Facilities & Infrastructure Research Program 15IFIP-B088091-02
dc.rightsCopyright 2016 Elsevier
dc.source.urihttps://doi.org/doi:10.1016/j.desal.2016.04.026
dc.subjectForward osmosis
dc.subjectReverse osmosis
dc.subjectFO-RO hybrid system
dc.subjectAutopsy
dc.subjectMembrane fouling characterisation
dc.titleFouling characteristics and their implications on cleaning of a FO-RO pilot process for treating brackish surface water
dc.typeJournal article
pubs.publication-statusPublished
ror.mmsid9916056183501831

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