| 摘要 |
<p>A water-aeration apparatus has a tubular frame defining a substantially closed chamber and capable of floating and carrying a load when the chamber is filled with air. Flood and bleed valves are provided at respective underwater water intakes and above-water air exhausts for introducing water into the chamber and for withdrawing air therefrom. A double-walled conduit is supported on the frame and has an outer substantially gas-impervious wall and, spaced inwardly therefrom, an inner gas-pervious wall. The conduit is inclined to the horizontal when the frame is floating and has an upper conduit end and a lower conduit end. A pump carried on the frame has an air intake above the water when the frame is floating and an air output at the lower end and directed toward the upper end.</p> |
