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METHOD FOR IMPROVING BLOCKING RATE OF PERMEATION MEMBRANE, PERMEATION MEMBRANE WITH IMPROVED BLOCKING RATE, WATER TREATING METHOD, AND PERMEATION MEMBRANE APPARATUS
METHOD FOR IMPROVING BLOCKING RATE OF PERMEATION MEMBRANE, PERMEATION MEMBRANE WITH IMPROVED BLOCKING RATE, WATER TREATING METHOD, AND PERMEATION MEMBRANE APPARATUS
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机译：提高渗透膜的堵塞率的方法，具有提高的堵塞率的渗透膜，水处理方法和渗透膜装置
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摘要
PROBLEM TO BE SOLVED: To improve a blocking rate for inorganic, organic matter with a permeation flux of a permeation membrane kept high, to keep the improved effect high, to thereby heighten removing effect of salts, organic matter and silica, allowing stable treatment over a long period.;SOLUTION: Acid treatment liquid 14 containing 1 wt.% or more of nitric acid or a nitrate as NO3, 0.01 wt.% or more of sulfuric acid or a sulfate as SO4, and 0.0001 wt.% or more of hydrogen ion concentration, is fed to a primary side 3 of a permeation membrane module 1 having the polyamide-based permeation membrane 2 for acid-treating the permeation membrane 2. Then, modifiers 15, 16 consisting of an organic compound with a molecular weight of 1,000 or more, having chargeability or polarity are fed and attached to the permeation membrane for improving the blocking rate.;COPYRIGHT: (C)2009,JPO&INPIT
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