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Phone: 0510-87876970 87877260
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Information Type: Product Supply
Industry: Environmental protection materials and medicaments / diffuser aerator
Area: Jiangsu / Wuxi / Yixing
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[Product Supply] Supply diffuser aerator

I. Product structure and specifications

Material: FRP

Service area: Installed in push-flow and fully mixed aeration tanks, each serving area is 0.8-1.5m2. Oxygenation efficiency: When the water depth is 4m, the oxygen transfer efficiency η = -8-9%, and the oxygenation capacity is 0.3- 0.41 (kg · oxygen / hour.)

Specifications: Φ400, Φ600

Structure and oxygenation principle

Structure

1. Zigzag cloth air head, the structure is similar to Jinshan I type. The function is to cut and disperse air, diameter D = 100 mm, height H = 120 mm, 18 teeth.

2. The diffuser hood with sawtooth, the diffuser hood is designed as an inverted umbrella. There are 12 Φ12 aeration holes at the center of the umbrella, which can replenish air evenly. The entire diffuser hood can reduce energy consumption and reduce water consumption. The air mixture is evenly divided to reduce the requirements for the level of installation of the diffuser. The diameter of the diffuser hood is D = 600 mm, and there are 60 serrated teeth on the periphery to further cut the blisters.

2. Principle of oxygenation

It can be seen from the foregoing that the factors affecting the oxygen transfer rate are mainly: flocculation of the aerated water body, enterprise mixing, bubble diameter, air volume, and partial pressure of oxygen in the liquid phase, etc.

The oxygenation of Φ600 diffuse aerator mainly depends on the following functions:

1. Vigorous mixing of liquid gas is transported from the pipeline to the aerator. It passes through the inner hole of Φ25 and passes through the sawtooth cloth air head for the first time cutting as water vapor. After passing through the diffuser hood and cutting the peripheral serrations again, it drives the surrounding stationary water body to rise, and the gas-liquid mixing is caused by the energy difference. In addition, the aerator is distributed to the bottom of the pool. The convection of the water flow increases the gas-liquid mixing and accelerates the renewal of the water film at the gas-liquid interface.

2. After twice sawtooth cutting and gas-liquid mixing, the diameter of the bubble becomes smaller, which increases the gas-liquid contact area and facilitates the transfer of oxygen.

3. Diffusion effect of the diffuser hood The diffuser hood diffuses several bundles of gas into a cylindrical shape, which changes the gas distribution state at the bottom of the pool, increases the area of gas distribution, and intensifies the diffusion of bubbles at the bottom and the Gas-liquid mixing is more conducive to aeration and oxygenation.
The difference between the oxygenation of the diffuser aerator and the Jinshan Type I lies in the secondary cutting and dispersion of the airflow, which increases the air distribution range. Changed the flow pattern in the pool. The difference from the fixed spiral is that the height of the equipment is greatly reduced, and the gas distribution range is large. The bottom has a large mixing effect, so it has better oxygenation performance.

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