| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a water treatment apparatus and a water treatment method which enables easy and proper control of supply quantity of chlorine for disinfection with respect to water to be treated. <P>SOLUTION: Electrodes 11, 12, electrodes 13, 14 and electrodes 15, 16 in a treated water tank 10 respectively constitute a pair of electrodes and electric power is supplied from an electric source 51 thereto. A controller 50 controls the operation of the electric source 51 and, thereby, electric power supplied to the respective pairs of electrodes and a quantity of current flowing between the electrodes are controlled. The controller 50 calculates the difference between oxidation-reduction potentials measured by a second ORP (oxidation-reduction potential) meter 31 and a first ORP meter 21. Then, the value of the difference is compared with the reference value which differs in accordance with PH value of water to be treated measured by a PH meter 60 and, based on the comparison result, the value of current flowing between the respective pairs of electrodes is controlled. <P>COPYRIGHT: (C)2003,JPO |
