| 摘要 |
PURPOSE: A method for aerating air by increasing air pressure with water pressure is provided to reduce operational energy and to convert buoyancy generated by aerated air bubbles into energy because the load of an underwater motor aerator is reduced. CONSTITUTION: A method for aerating air by increasing air pressure with water pressure is as follows: One end(12) of a U-shaped pipe is closed and water(4) is put into an open water inlet port(10) of the U-shaped pipe in order to form a compressed air layer(7). Air in the compressed air layer corresponding to a compressed low water surface(6) is compressed by the deviation of the water pressure caused by the deviation of water levels(9) between a high water surface(11) and the compressed low water surface. The underwater motor aerator(3) operates in the lower part(2) of the U-shaped pipe to draw the compressed air in the compressed air layer through a compressed air transfer pipe(8). The air is aerated in the water to generate buoyancy. Air bubbles(5) having the buoyancy vertically ascend to a secondarily compressed air layer and entered the secondarily compressed air layer.
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