| 摘要 |
<p>Apparatus 3 for the removal of sedimented material from a settling tank floor comprises a trolley mobile or the floor carrying perforated suction pipe means 2, 4, and capable of reversible traction drive means via a rope drive 13,30, to reach each end of the floor, and having said suction means at each end of the trolley, and means to induce and to isolate the flow of sediment. <IMAGE></p> |
