| 摘要 |
<p>PURPOSE:To efficiently perform aeration by uniformly supplying 3 required amount of air or oxygen even to a submerged aeration tank. CONSTITUTION:A draft tube 2 is arranged in an aeration tank 1 having a required depth in a vertical direction and an electromagnetic field generator 3 allowing an electromagnetic field to act on the water in the draft tube 2 to generate an ascending stream is arranged to the outer periphery of the draft tube 2 and one ore more self-suction type aerator 4 performing aeration and stirring is arranged to the upper layer part of the aeration tank 1 and a revolving descending stream is generated in the tank by the aerator to perform aeration. The water on the bottom of the tank is raised through the draft tube 2 by the electromagnetic field generator 3. By this constitution, a revolving descending stream and a circulating descending stream are generated throughout the tank to uniformly stirr and aerate the entire contents in the tank.</p> |
