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Membrane Water Treatment
  Volume 7, Number 1, January 2016 , pages 1-10

Cleaning agents efficiency in cleaning of polymeric and ceramic membranes fouled by natural organic matter
Agnieszka Urbanowska and Małgorzata Kabsch-Korbutowicz

    Ultrafiltration is known to be one of the most commonly applied techniques in water treatment. Membrane fouling is the main limiting factor in terms of process efficiency and restricting it to the manageable degree is crucial. Natural organic matter is often found to be a major foulant in surface waters. Among many known fouling prevention techniques, the membrane chemical cleaning is widely employed. This study focuses on evaluating the cleaning efficiency of polymeric and ceramic membranes with the use of various chemicals. The influence of cleaning agent type and its concentration, membrane material and its MWCO, and cleaning process duration on the recovery of membrane flux was analyzed. Results have shown that, regardless of membrane type and MWCO, the most effective cleaning agent was NaOH.
Key Words
    ultrafiltration; polymeric membrane; ceramic membrane; natural organic matter; fouling; chemical cleaning
Department of Environmental Engineering, Institute of Environment Protection Engineering, Wrocław University of Technology, Wybrzeże S. Wyspiańskiego 27, 50-370 Wrocław, Poland.

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