| 摘要 |
PROBLEM TO BE SOLVED: To provide a water treatment method free from such defects in a conventional water treatment using a metal electrode that scale components are deposited on the metal electrode, thereby, effective electrode area is reduced and, further, an electrode substance on the surface of metal electrode is dissolved into water to be treated having a metal dissolving component and induces the deterioration of the metal electrode. SOLUTION: An electrolytic chamber 14 which has an opening part 13 and electrolyzes supplied raw water with the metal electrode 16 to produce electrolyzed water 20 containing active species having sterilizing ability is immersed into a chamber 11 for water to be treated which stores the water 12 to be treated, and the produced electrolyzed water is allowed to overflow from the opening part and contact with the water to be treated. Because the electrolyzed water can be produced without allowing the water to be treated to contact with the metal electrode, the dissolution of the electrode substance on the surface of metal electrode or the deposition of hardness component onto the surface of metal electrode can be completely prevented or can be suppressed to the minimum. In addition, the electrolytic chamber can be moved, is not necessarily fixedly installed on a single electrolytic device and can be used for the treatment of the water to be treated on a plurality of electrolytic devices. COPYRIGHT: (C)2006,JPO&NCIPI
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