| 摘要 |
PROBLEM TO BE SOLVED: To provide a novel water treatment apparatus which more enhances the efficiency of denitrification treatment than before not only to perform a denitrification treatment more efficiently but also to suppress the occurrence of a chlorine gas. SOLUTION: A pH sensor S2 for measuring the pH of water w1 flowing through a treated water channel 10, which supplies water to an electrolytic cell 11 and discharges the water after treatment from the electrolytic cell 11, and an acidity agent supply means 12 for supplying an acidity agent L1 to water are provided to the electrolytic cell 11 for the denitrification treatment of the water w1 or the treated water channel 10. The acidifying agent L1 is supplied from the the acidity agent supply means 12 in order to hold the measured value of the pH sensor S2 to 8 or less at the time of electrochemical reaction in the electrolytic cell 11. By suppressing the pH of water at the time of electrochemical reaction to 8 or less, the efficiency of denitrification treatment is more enhanced than before and the occurrence of the chlorine gas can be suppressed. COPYRIGHT: (C)2004,JPO
|
