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http://dx.doi.org/10.14579/MEMBRANE_JOURNAL.2017.27.6.519

Hydraulic Cleaning Effect on Fouling Mechanisms in Pressurized Membrane Water Treatment  

Charfi, Amine (Department of Environmental Engineering, Inha University)
Jang, Hoseok (Department of Environmental Engineering, Inha University)
Kim, Jeonghwan (Department of Environmental Engineering, Inha University)
Publication Information
Membrane Journal / v.27, no.6, 2017 , pp. 519-527 More about this Journal
Abstract
Membrane fouling is the main issue hindering the expansion of low pressure membrane processes for surface water treatment. Therefore, applying periodic hydraulic cleaning for fouling control should be well optimized. Better understanding of membrane fouling associated with periodic hydraulic cleaning would be useful to optimize membrane cleaning strategies. By comparing experimental permeability data with the classical Hermia blocking laws, this study aims at analyzing membrane fouling and understanding dominant fouling mechanisms occurring when filtering a synthetic surface water solution with a pressurized membrane process during six filtration cycles of 30 min each, separated with cyclic cleaning of 1 min by backwashing and forward flushing separately and combined. When applying single cleaning technique, membrane fouling during the first cycles was controlled by complete blocking mechanism while the last cycles were dominated by cake formation. Nevertheless, when combining cleaning technique better membrane regeneration was obtained and fouling was mainly due to cake formation.
Keywords
Pressurized membrane; Hydraulic cleaning; Modelling approach; Fouling mechanism; Surface water treatment;
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