| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To increase the maintainability of a diffusion part 4 while maintaining biological treatment performance regarding a waste water treatment device 1. <P>SOLUTION: The waste water treatment device 1 is equipped with: a treatment tank 2 for subjecting waste water to biological treatment; an oscillation bed 3 provided in the treatment tank 2; a diffusion part 4 arranged at the lower part of the oscillation bed 3; and a feed pipe 9 connected with the diffusion part 4 and feeding air, and, by making a fixing rod 7 or a supporting frame 8 in the oscillation bed 3 movable, the diffusion part 4 is made easy to be separated upon maintenance. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
