| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an aeration tank which prevents sludge accumulation on a tank bottom part and permits high efficiency of oxygen dissolution. <P>SOLUTION: Aeration members 2, 3 and 4 are installed on a half side of the vertical cross section of the tank 1. The plain view shape of the tank 1 is rectangular. The vertical cross section is a vertical cross section in the short width direction of the tank 1 and the width of the tank 1 in the vertical cross section in the short width direction is (w). The distance from one end in the width direction of the tank 1 to the center in the width direction of the respective aeration members 2, 3, 4 is (a) and the range of arrangement of the aeration members 2, 3, 4 is (b). The ratio a/w is 0.22 to 0.32, preferably 0.24 to 0.3 and the ratio b/w is 0.1 to 0.4, preferably 0.2 to 0.3. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
