REJECTION RATE IMPROVING METHOD OF SEMIPERMEABLE MEMBRANE

摘要

PROBLEM TO BE SOLVED: To provide a rejection rate improving method of a semipermeable membrane capable of improving the rejection rate of the semipermeable membrane such as a nano filtration membrane, a reverse osmosis membrane and the like and to provide a water treatment method using the semipermeable membrane treated by the rejection rate improving method.SOLUTION: In a rejection rate improving method of a semipermeable membrane where a rejection rate improving agent and the semipermeable membrane are contacted, a cleaning agent or a germicidal agent and the rejection rate improving agent are simultaneously contacted or continuously contacted.SELECTED DRAWING: Figure 3