| 摘要 |
PROBLEM TO BE SOLVED: To provide a water treating device efficiently decomposing and removing organic compounds in water to be treated by using an excimer lamp without requiring the addition of a special component. SOLUTION: In the water treating device provided with a first treating mechanism having an oxygen dissolving means for dissolving oxygen into influent water to be treated, and a second treating mechanism for treating the water to be treated by UV rays irradiated from the excimer lamp, the water to be treated with dissolved oxygen concentration adjusted to more than a specified value by the first treating mechanism is fed to the second treating mechanism.
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