| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for improving the blocking rate of a reverse osmosis membrane that can effectively improve the blocking rate without significantly reducing permeation flux even if the membrane is markedly degraded.SOLUTION: A method for improving the blocking rate of a reverse osmosis membrane includes allowing a first organic compound having a molecular weight of less than 200, a second organic compound having a molecular weight of 200 to less than 500, and a third organic compound having a molecular weight of at least 500 to pass through the reverse osmosis membrane. Amino acid or an amino acid derivative is suitable as the first organic compound. An organic compound contact amount per unit area of the membrane is 2,500 mg/mor more. |
