| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for softening water by which the consumption of an electrode material is suppressed, so that maintenance cost for a water softener can be reduced, and to provide the water softener. SOLUTION: In the water softening method where the water to be treated is made to flow between confronted electrodes, and D.C. voltage is applied between the electrodes so as to electrolytically deposit metal ions in the water to be treated on the electrode on the cathode side, a titanium based alloy electrode containing 0.1 to 5 mass% nickel is used at least as the electrode on the anode side. Further, the water softener includes: an electrolytic cell receiving and exhausting the water to be treated; a first electrode installed in the electrolytic cell; a second electrode installed at prescribed intervals with the first electrode in the electrolytic cell; and a D.C. power source applying D.C. voltage to the space between the first electrode and the second electrode, and in which at least the electrode to form into the electrode on the anode side between the first electrode and the second electrode is made of a titanium based alloy electrode containing 0.1 to 5 mass% nickel. COPYRIGHT: (C)2010,JPO&INPIT
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