| 摘要 |
<p>The rotary surface aeration device used to rotate and aerate sewage is provided with a carrying part connected to a vertically running drive axle as well as with a plurality of liquid transporting units fastened to the carrying part. In order to improve the oxygen input, the liquid transporting units , which are adjacent to each other viewed in the circumferential direction of the rotary aerating device, have different jet exiting speeds. This is achieved by giving the scoop outlet edges of these liquid transporting units which are adjacent to each other, a different distance from the drive axle of the rotary aeration device. The liquid transporting units are arranged and constructed in such a way that the liquid jets of at least two liquid transporting units , which are adjacent viewed in the circumferential direction of the rotary aeration device, exiting from said units during the operation of the rotary aeration device strike each other before reentering into the liquid to be aerated.</p> |
