Diffuser Aerator
Price:Negotiable
Contact Info
- Add:江苏宜兴和桥创业园, Zip: 214211
- Contact: 吴建刚
- Tel:0510-87876970
- Email:87876970@163.com
Description
Additional Information
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II. Structure and Oxygenation Principle 1. Structure 1. Serrated air distribution head, similar in structure to Jinshan Type I. Its function is to cut and disperse air. Diameter D = 100 mm, height H = 120 mm, with 18 serrations. 2. Diffuser cover with serrations, designed in an inverted umbrella shape. At the center of the umbrella, there are 12 Φ12 aeration holes to supplement air and further evenly distribute it across the diffuser cover, reducing energy consumption and ensuring uniform mixing of water and air. This also reduces the requirement for installation levelness. The diffuser cover diameter D = 600 mm, with 60 downwardly inclined serrations around the perimeter to further cut air bubbles. 2. Oxygenation Principle As mentioned above, the main factors affecting the oxygen transfer rate are: turbulence in the aerated water body, mixing intensity, bubble diameter, air volume, and the partial pressure of oxygen in the liquid phase, etc. The Φ600 diffuser aerator primarily achieves oxygenation through the following mechanisms: 1. Intense liquid mixing: Gas is delivered through pipes to the aerator, passes through a Φ25 inner hole and the serrated air distribution head for the first cutting of air and water. After passing through the diffuser cover and being cut again by the peripheral serrations, it drives the surrounding static water upward. The energy difference causes intense mixing of gas and liquid. Additionally, since the aerators are distributed at the bottom of the tank, the rising bubbles and descending water flow create countercurrents, further enhancing gas-liquid mixing and accelerating the renewal of the water film at the gas-liquid interface. 2. After two rounds of serrated cutting and gas-liquid mixing, the bubble diameter decreases, increasing the gas-liquid contact area and facilitating oxygen transfer. 3. Diffusion effect of the diffuser cover: The diffuser cover spreads the concentrated gas stream into a cylindrical shape, altering the air distribution pattern at the tank bottom, expanding the distribution area, and intensifying bubble diffusion and gas-liquid mixing at the bottom, which further promotes aeration and oxygenation. The difference between the diffuser aerator and the Jinshan Type I lies in the secondary cutting and dispersion of the air flow, which expands the air distribution range and changes the flow pattern in the tank. Unlike fixed spiral aerators, this device has a significantly reduced height, a larger air distribution range, and greater mixing at the tank bottom, resulting in superior oxygenation performance. |
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