| 摘要 |
PROBLEM TO BE SOLVED: To provide a high-voltage electric deionization apparatus and a high-purity water production method which can be employed for a facility, such as a nuclear facility and the like. SOLUTION: A high-voltage electric deionization system includes an electric deionization apparatus body 10, a pressure container 11 housing the electric deionization apparatus body 10, inflow piping 21 introducing an inert gas into the pressure container and outflow piping 22 discharging the inert gas, an ambient pressure detector 26 detecting ambient pressure of electric deionization apparatus body in the pressure container, and water to be treated introduction piping 31, treated water outflow piping 32, concentrate introduction piping 41, and concentrate outflow piping 42 detachably connected to the pressure container. The treated water outflow piping is provided with a treated water outlet pressure detector 36, and the concentrate outflow piping is provided with a concentrate outlet pressure detector 46. The ambient pressure detector, the treated water outlet pressure detector 36, and the concentrate outlet pressure detector are electrically connected to a pressure calculator 24 to control an inert gas inlet control valve 23 based on a pressure difference. COPYRIGHT: (C)2009,JPO&INPIT
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