| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a circulation type water closet unit with a sewage purifying function, which suppresses a mal odor by improving the purifying function and can be installed even in a case of space savings, and an aeration method therefor. SOLUTION: The circulation type water closet unit with the sewage purifying function, wherein flushing water is utilized circulatably, has an aeration tank 4 for aerating sewage generated by utilizing a toilet, a reaction tank 5 for making the sewage from the aeration tank 4 purified by microbes, and the like. In the water closet unit and the aeration method therefor, the aeration tank 4 has a communication part which makes a lower part of an agitation tank communicate with a bottom of a retention tank so as to enable the movement of the sewage from the agitation tank to the retention tank and a communication part 8b which makes an upper part of the retention tank communicate with an upper part of the agitation tank so as to enable the movement of the sewage from the retention tank to the agitation tank; the sewage agitated in the agitation tank flows onto the bottom of the retention tank through the communication part provided at the bottom of the retention tank; and supernatant sewage in the retention tank flows into the next agitation tank through the communication part 8b provided in the upper part of the retention tank.</p> |
