| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an aerobic treatment vessel in which an extra space part inside the vessel is eliminated and the size of the vessel is minimized while maintaining the same function. SOLUTION: The aerobic treatment vessel is arranged in upper and lower parts without providing a space part between the upper section (a biological reaction bed) 2 on the upper side and the lower section (a filtration bed) 3 on the lower side. In the lower part of the upper section (the biological reaction bed) 2, a diffusing member 5a for reaction is installed, and in the downward or the lower part of the lower section (the filtration bed) 3, a diffusing member 5b for cleaning is installed. In the lower part of the vessel, an opening part 12 for communicating with a treatment water storage part 13 is provided, and in the filtration bed 3, a drainage port 8 for cleaned waste water connected to a discharge pipe 7 for cleaned waste water is arranged. In a mouth part of drainage port 8, a water-permeable member 11 which allows liquid to pass through and does not allow a filler (filter medium) 10b to pass through is provided.</p> |
