| 摘要 |
<p>To provide a device for diffusing aeration air of a wastewater purification apparatus, which is able to easily purify wastewater by increasing contact area of air with the wastewater and retention time of the air. A plurality of diffusion plates (10) is installed on the upper part of an air diffuser (5) in an aeration tank. A plurality of through holes (10a) and a plurality of penetrations (10b) are formed on the diffusion plates. An air stay container (10c) having an open lower side is respectively installed on the upper part of each of the penetrations to trap air passing through the penetrations.</p> |
