The development of membrane fouling in full-scale RO processes

Kai Loon Chen, Lianfa Song, Say Leong Ong, Wun Jern Ng

Research output: Contribution to journalArticlepeer-review

63 Scopus citations

Abstract

A predictive model was developed in this study for simulating the development of membrane fouling with time in full-scale RO processes. The increase in resistance was used as an indicator of membrane fouling and it enabled one to better describe membrane fouling taking place in a long membrane channel. In this model, fouling potential of a feed water was defined as the increment in membrane resistance due to a unit volume of permeate passing through the membrane, which was directly measurable with a simple filtration experiment. By employing the concept of fouling potential, fouling property of a feed water could be directly related to fouling rate on a RO membrane. The local variations in flow properties and parameters were explicitly taken into consideration in the model in order to provide a more realistic description of a full-scale RO process. The results of the simulation studies demonstrated that a full-scale RO system could maintain a constant average permeate flux for a period of time even though fouling development had occurred right from the start of operation. The effects of water fouling potential, channel length, and membrane resistance on fouling development in full-scale RO processes were investigated.

Original languageEnglish
Pages (from-to)63-72
Number of pages10
JournalJournal of Membrane Science
Volume232
Issue number1-2
DOIs
StatePublished - Mar 15 2004

Keywords

  • Fouling
  • Modeling
  • Reverse osmosisc
  • Theory
  • Water treatment

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