| 摘要 |
<p>PURPOSE:To improve the treatment performance of waste water by making the volume of a reaction tank small and forming the uniform and high concentration in the whole area of the tank in a treatment device for waste water utilizing active sludge. CONSTITUTION:A first pipe 7 provided with an ejector 5 for sucking air at the upper end, a second pipe 9 for deaerating excessive air and a third pipe 11 for floating the mixed liquid of waste water and active sludge in a closed tank 2 are disposed upright in the closed tank 2, into which waste water 1 is fed for carrying out the waste water treatment by means of active sludge, and a pump 3 for extracting the mixed liquid of waste water and active sludge in the closed tank 2 and pumping up the same into the ejector 5 is provided.</p> |
