To provide an electric deionized water production apparatus and a deionized water production method which solve problems occurring when water to be treated is used as electrode water with saving cost.
The apparatus includes electrode chambers E1 and E2 which are composed of an anode chamber E1 and a cathode chamber E2, cation desalination chambers D1 and S1 which are adjacent with cation exchange films c1 and c2 on the side of the cathode chamber E2 and filled with at least a cation exchange body, and anion desalination chambers D2 and S2 which are adjacent with anion exchange films a1 and a2 on the side of the anode chamber E1 and filled with at least an anion exchange body. The cation desalination chambers D1 and S1, and the anion desalination chambers D2 and S2 are communicated with each other so that a part of intermediate treated water in which at least a cation component is removed, flowing out from the cation desalination chambers D1 and S1, flows into the anion desalination chambers D2 and S2. The cation desalination chambers D1 and S1 and the electrode chambers E1 and E2 are communicated with each other so the other part of the intermediate treated water flowing out from the cation desalination chambers D1 and S1 flows into the electrode chambers E1 and E2.
SASAKI KEISUKE
Ishibashi Masayuki
Masaaki Ogata
Next Patent: ELECTRIC DEIONIZED WATER PRODUCTION APPARATUS AND DEIONIZED WATER PRODUCTION METHOD