| 摘要 |
<p>The invention relates to an open topped collector device (4) for scum for removing same from the surface of a liquid in a settling tank (2), the collector device being a receptacle suspended from and fixed to a boom which carries a travelling bridge scraper (6), the receptacle including an internal submerged pump (5) which pumps collected sludge from the receptacle via a conduit (21) to a central stilling tank (7).</p> |
