Development of a control system for in-line coagulation in an ultrafiltration process

B. Blankert, Bernardus H.L. Betlem, B. Roffel

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A control system for the in-line coagulation applied in an ultrafiltration process was developed. The dosing strategy aims to apply a minimal coagulant dose while maintaining desirable process performance by regulating the initial filtration resistance. This is achieved by a feedback controller. It was found that the control system performs well; adaptation to changing conditions is achieved adequately and sufficiently fast. The initial resistance of the last filtration before the chemical cleaning phase can be controlled within an accuracy of approximately 3% (of the total resistance) or 9% (of the fouling resistance). Compared to the current dosing strategy, a significant reduction of coagulant consumption can be achieved.
Original languageUndefined
Pages (from-to)39-45
JournalJournal of membrane science
Issue number1-2
Publication statusPublished - 2007


  • Control
  • In-line coagulation
  • Ultra filtration
  • IR-67308

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