| 摘要 |
PROBLEM TO BE SOLVED: To provide an electrodialyzer high in durability and excellent in electrodialysis performance.SOLUTION: There is provided an electrodialyzer in which a plurality of cation exchange membranes and a plurality of anion exchange membranes are alternately arranged between a positive electrode and a negative electrode, wherein an ion exchange membrane composed mainly of a copolymer (P), which comprises a vinylalcohol-based polymer component (A), a vinylene-based polymer component (B) and a polymer component (C) having an ionic group as constituents, is used.SELECTED DRAWING: None |
