| 摘要 |
PROBLEM TO BE SOLVED: To provide a power saving type deionized water producer and a deionized water production method using this device fundamentally improved on a structural point of an electric deionized water producer and besides reducing electric resistances of an electrode room and a concentration room. SOLUTION: In the electric deionized water producer in which a desalt room D1 is constituted by filling ion exchange bodies into two small desalt rooms d1, d2 partitioned with a cation exchange membrane 3 at one side, an anion exchange membrane 4 at the other side and an intermediate ion exchange membrane 5 in the center, and concentration rooms 1 are provided at both sides of the desalt room D1 via the cation exchange membrane 3, the anion exchange membrane 4, and these desalt room D1 and the concentration rooms 1 are arranged between an anode room 2b provided with an anode 7 and a cathode room 2a provided with a cathode 6, and the ion exchange bodies 8a are filled into the concentration rooms 1, the cathode room 2a and the anode room 2b, the outflow water from the small desalt room d2 at one side is flowed in the small desalt room d1 at the other side, while voltage is impressed, and also the concentrated water is flowed in the concentration rooms 1 and then the electric resistance is extremely reduced and impurity ions in water to be treated are removed to obtain deionized water.
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