| 摘要 |
<p>1,227,391. Aerating sewage. STENBERGFLYGT A.B. 3 April, 1968 [5 April, 1967], No. 16024/68. Heading C1C. Sewage enters scoop 28 by inlet 26 and tilts the scoop so as to feed regenerated aerated sludge from scoop 29, in regeneration chamber 5, to the mixing chamber 10 via the screen 31. The mixture is aerated by diffuser 12 and then transported by means of air lift 13 to the flocculation chamber 11 where further aeration takes place with diffuser 18 which also prevents sedimentation. The mixture passes via opening 20 to sedimentation chamber. Purified liquid is discharged at 32 while sludge passes through the openings 22 to be lifted by diffuser 23 for return to raw sewage. If the sludge level rises too high it is fed back to sedimentation tank by pipe 25.</p> |
