| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a circulation type water closet in which treated water is adequately bleached in the configuration. SOLUTION: This facility comprises a sewage treatment tank 3 which receives sewage water 21 from a water closet 11 and gives a purifying treatment and a circulating pump 35 which circulates treated water 24 from the sewage treatment tank 3 as washing water to the water closet 11 through a circulating passage 350. In the circulating passage 350, the treated water 24 is temporarily stored, and a bleaching equipment 34 which bleaches the treated water by blowing ozone gas 29 into stored treated water 24 is provided, and the bleaching equipment 34 is provided with a controller 42 which controls the blowing of ozone gas 29 in response to the chromaticity of the treated water when bleaching the treated water 24.</p> |
