| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method by which a blocking rate can be effectively improved without greatly reducing a permeable flux and even when applied to a remarkably deteriorated membrane. <P>SOLUTION: The blocking rate improving method of a permeable membrane includes a step (amino treatment step) of making an aqueous solution including a compound having an amino group and molecular weight of ≤1,000 (except the solution of pH ≤7) pass through the permeable membrane. By making an amino compound of low molecular weight pass through the membrane, a deteriorated part of the membrane can be restored without greatly lowering the permeable flux of the permeable membrane and the blocking rate can be effectively improved. <P>COPYRIGHT: (C)2013,JPO&INPIT |
