| 摘要 |
<p>PROBLEM TO BE SOLVED: To enhance the purifying efficiency of water to be treated by certainly fluidizing a carrier without stagnating the same. SOLUTION: Long air diffusing devices 22 and long ejecting devices 20 are alternately arranged on the bottom surface of an aeration tank 10 in parallel and the ejecting devices 20 are connected to a pump 24 through a supply pipe 26 to eject water 14 to be treated toward the air diffusing devices 22. The interval between the ejecting devices 20 and the air diffusing devices 22 is determined corresponding to the height of ejecting orifices, the density of a carrier 16 or the like.</p> |
