Journal of Korean Society of Water and Wastewater (상하수도학회지)

The Korean Society of Water and Wastewater (대한상하수도학회)
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Effect of Feed Monochloramination on Performance of RO Membranes

NH2Cl 사용으로 인한 RO 막의 성능 향상

  • Hong, Seungkwan ;
  • Reiss, Robert (Dept. of Civil Environmental Engineering, University of Central Florida) ;
  • Taylor, James S. (Dept. of Civil Environmental Engineering, University of Central Florida) ;
  • Beverly, Sharon (Dept. of Civil Environmental Engineering, University of Central Florida)
  • 홍승관 (고려대학교 공과대학 사회환경시스템공학과) ;
  • ;
  • ;
  • Received : 2005.01.13
  • Accepted : 2005.05.20
  • Published : 2005.06.15
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Abstract

The 15 month pilot study was performed to investigate the effect of pretreatment by monochloramine ($NH_2Cl$) on the performance of RO membranes made of cellulose acetate (CA) and polyamide (PA). Both RO membranes experienced severe biological fouling without any pretreatment during the treatment of highly organic surface water in Florida, USA. Feed monochloramination at 5 mg/L significantly minimized productivity loss by effective control of biofouling. The CA membrane did not show any structural damages by monochloramine, while the PA membrane suffered from a gradual loss of membrane integrity by chlorine oxidation, which was characterized as an increase in productivity and a decrease in selectivity. The degradation of PA membrane increased with increasing monochloramine dose.

Keywords

References

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