| 摘要 |
<p>An aerator 2 for fluid waste, eg. a liquid/solid mixture, comprises an aeration chamber 14a and an impeller 7 at the top of the chamber, the impeller directing the fluid waste downwardly against the upward flow of an aeration medium, eg air or oxygen, the aeration medium being distributed from the base 3 of the chamber. The aerated fluid waste is subsequently discharged from the chamber via an outlet adjacent the impeller. Preferably the aerator also comprises a distributor in the form of a coiled pipe (3, Fig 6), below the impeller, for introducing the aeration medium into the aeration chamber and a discharge chamber 13a which receives the aerated fluid waste from the aeration chamber through an inlet adjacent the hub of the impeller, the discharge chamber being surrounded by the aeration and distributor chambers (Fig 6). The discharge chamber may have an outlet below the distributor.</p> |
