| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an air diffusion method and an air diffuser, in which oxygen dissolving efficiency is improved by eliminating the effect of sludge and retaining fine bubbles in a vessel for a long time. SOLUTION: Water to be treated is supplied to a reaction part 4 communicating with a dissolving part 3 or the dissolving part through a separation means 2, an inside-vessel mixed liquid in the reaction part 4 is supplied to the dissolving part 3 through the separating means 2 and is aerated with air diffused from a diffusing pipe 8 arranged in the dissolving part 3 and the biological treatment is performed by circulating the inside-vessel mixed liquid, in which oxygen is dissolved, in the reaction part 4 through a circulation line 10.</p> |
