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Fouling and cleaning of reverse osmosis membrane applied to membrane bioreactor effluent treating textile wastewater

  • Srisukphun, Thirdpong (Department of Environmental Health, Faculty of Public and Environmental Health, Huachiew Chalearmprakiet University) ;
  • Chiemchaisri, Chart (Department of Environmental Engineering, Faculty of Engineering, Kasetsart University) ;
  • Chiemchaisri, Wilai (Department of Environmental Engineering, Faculty of Engineering, Kasetsart University) ;
  • Thanuttamavong, Monthon (Department of Environmental Engineering, Faculty of Engineering, Kasetsart University)
  • 투고 : 2015.08.03
  • 심사 : 2015.12.14
  • 발행 : 2016.03.31

초록

Membrane bioreactor (MBR) and reverse osmosis (RO) membrane system was applied to the treatment and reclamation of textile wastewater in Thailand. An experiment was carried out to determine the fouling behavior and effect of anti-scalant and biocide addition to flux decline and its recovery through chemical cleaning. The RO unit was operated for one month after which the fouled membranes were cleaned by sequential chemical cleaning method. RO flux was found rapidly declined during initial period and only slightly decreased further in long-term operation. The main foulants were organic compounds and thus sequential cleaning using alkaline solution followed by acid solution was found to be the most effective method. The provision of anti-scalant and biocide in feed-water could not prevent deposition of foulant on the membrane surface but helped improving the membrane cleaning efficiencies.

키워드

참고문헌

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피인용 문헌

  1. A Study on Membrane Filtration Characteristics of Methanogenic Mixed Liquor in Two Phase Anaerobic Digestion of Food Waste vol.42, pp.3, 2016, https://doi.org/10.4491/ksee.2020.42.3.151