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Method for improving inhibition performance of semipermeable membrane, semipermeable membrane, and semipermeable membrane water production device
Method for improving inhibition performance of semipermeable membrane, semipermeable membrane, and semipermeable membrane water production device
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机译:提高半透膜的抑制性能的方法,半透膜和半透膜水生产装置
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摘要
Disclosed is a method of enhancing a rejection performance of a semipermeable membrane by pressurizing and feeding a liquid containing a rejection performance enhancer to a primary side of the semipermeable membrane to come into contact with a membrane surface thereof, the method including: a step of changing, at least once during the feeding, a pressure or an osmotic pressure of the liquid containing the rejection performance enhancer at a fluctuation rate of 0.05 MPa/s or more, or a feed flow rate to the semipermeable membrane, thereby changing at least either a pressure acting on the membrane surface or a permeation flow rate from that at the time of normal treatment, followed by maintaining.
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