| 摘要 |
<p>The sewage treatment plant includes an annular activation tank (1), which encloses a round tank (2) for the secondary clarification and is connected to this by a waste water line (3), a secondary clarification tank scraper (5) as well as an aeration unit (6) and a circulation propeller (7) for the activation tank (1). The circulation propeller (7) simultaneously serves to drive a rotating bridge (4) on which are mounted the secondary clarification tank scraper (5), the aeration unit (6) and the circulation and drive propeller (7). <IMAGE></p> |
