Development of a model-based control system for membrane filtration process

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Reduction of operational cost and certification of safety for treated water are required for the membrane filtration process for drinking water. Therefore a model-based control system is developed to reduce operational cost. A process model is used for the model-based control system that calculates the transmembrane pressure (TMP) in the future. This allows the model-based control system to optimize the coagulant dosage for the pretreatment process and the backwash interval for the membrane filtration process automatically. The cost reduction effect is verified using a pilot-scale plant.

Keywords: coagulation, control, membrane filtration process, process model

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