| 摘要 |
PURPOSE: Provided is an automatic method for controlling operation of ultra filtration membrane continuously, which is characterized in that only a part of ultra filtration membrane is operated according to flow rate, and back-washing pressure is operated automatically. Therefore, ultra filtration membrane is operated continuously. CONSTITUTION: The method comprises the steps of finding an ultra filtration module of which flux rate is decreased less than a preset level by a flow meter(6) installed on a filtrate recirculation pipe(205), through which filtrate from ultra filtration module(208,210) is returned into a recirculation tank(7); and back washing the ultra filtration module of which flux rate is decreased less than a preset level.
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