| 摘要 |
<p>1298601 Treating waste waters TATABANYAI SZENBANYAK 24 Feb 1970 8884/70 Heading C1C [Also in Division B1] Sewage &c. in tank 1 is aerated and mixed by rotary aerator 2 which also sucks sludge through pipe 8 from settling tank 5. The lower portion of the uptake tube 3 is telescopic to allow adjustment of the size of the gap 10 between the tube and the bottom of tank 1.</p> |
