| 摘要 |
<p>A pump 2 forms a pressurised stream of waste water and supplies it to a ring main 4 which feeds the liquid to a plurality of conduits 6 which depend therefrom. Each conduit 6 has a venturi 8 whose throat has an inlet 10 for gaseous oxygen formed therein. Each conduit 6 ends in one or more nozzles 12 immersed in a volume of the waste water to be oxygenated. In operation, each venturi 8 restricts the flow of water therethrough and creates turbulence so that a turbulent flow of liquid containing oxygen bubbles is emitted from the associated nozzle 10 at relatively high velocity such that turbulence assisting the dissolution of oxygen is created in the volume of liquid.</p> |
