| 摘要 |
PROBLEM TO BE SOLVED: To provide an aerator capable of obtaining a high oxygen dissolving efficiency with a less power.SOLUTION: An aerator includes: an aeration tank; an air diffuser which is arranged at a position of 2-3 m below the water face in the aeration tank, and discharges air bubbles by receiving supply of pressure air from an air supplying pipe for air diffusion; and a descending flow generating means which arranged above the air diffusing apparatus and conveys air bubbles below the aeration tank. |
