A commonly used aeration method, also known as blast aeration. It uses air compressors or blowers to pass air into the water body as fine bubbles through various forms of diffusers, and rise or circulate, and finally rupture on the surface of the liquid, thereby increasing the dissolved oxygen in the water to meet the oxygen requirements of aerobic biological treatment. demand.
The aeration diffuser is composed of three parts: air pressurized equipment (generally Roots or centrifugal fan diffuser and pipe system connecting the two. There are generally two types of diffuser, one is to generate small bubbles from porous equipment Most of the air bubbles are below 1.5mm and rise in a straight line in the water. The other is a device that uses large holes or hydraulic shears to generate large bubbles with a bubble diameter of more than 1.8mm.