Chinese Journal of Applied Chemistry

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Progress on Investigation and Application of Membrane Scaling Potential Prediction and Control Techniques in Brackish Water Reverse Osmosis Desalination Process

SONG Yuefei*, SU Xianfa, LI Tiemei, ZHOU Jianguo   

  1. (Key Laboratory of Yellow River and Huai River,Water Environmental and Pollution Control,
    Ministry of Education,School of Environment,Henan Normal University,Xinxiang 453007,China)
  • Received:2014-03-27 Revised:2014-05-12 Published:2014-11-08 Online:2014-11-08
  • Contact: Song Yuefei

Abstract: It is very important to take appropriate inhibiting scaling measurements in brackish water reverse osmosis(BWRO) desalination process, which depends on feed water characteristics and scaling formation mechanism on membrane surface. Managing scale formation relies on early scaling potential prediction, judicious system design, influent pretreatment and non-destructive detection. A range of conventional and emerging analytical techniques, including molar ratio, direct observation and spectroscopic methods have evolved to predict scale potential and detect scale formation in real time. This review considers the prediction of scaling tendency, scale control techniques and non-destructive scale monitoring techniques based scales that are encountered when reverse osmosis is used in brackish water desalination applications. These techniques can significantly inhibit membrane surface scaling and decrease membrane fouling. Moreover, the suggestions are also presented in this field.

Key words: brackish water desalination, inorganic scaling, reverse osmosis, scaling potential prediction, scale control techniques

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