| 摘要 |
PROBLEM TO BE SOLVED: To provide a technology which is effective in readily grasping whether or not the chemical treatment of the water to be treated is correctly carried out in a water treatment apparatus having a chemical treatment region that carries out the chemical treatment of the water to be treated. SOLUTION: In a water treatment apparatus 100, a disinfection treatment of the water to be treated is carried out by eluting a disinfecting agent 122 into the water to be treated in a disinfection chamber 120. In this structure, the water to be treated where the disinfecting agent 122 elutes undergoes color change of the water to be treated according to the residual amount of the disinfecting agent 122. COPYRIGHT: (C)2009,JPO&INPIT
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