Is it better to use centrifugal fan or roots blower for water treatment?

Is it better to use centrifugal fan or roots blower for water treatment?

In water treatment, centrifugal fan and roots blower have their own advantages and application scenarios.

Centrifugal fan:

Advantages: high efficiency, long service life, no need for lubrication in the housing, gas will not be polluted by oil, etc.

Scope of application: generally applicable to shallow pool with small air volume and pressure.

Air volume control: frequency conversion adjustment control can be adopted to ensure the flexibility of process operation adjustment and reduce power consumption.

Roots blower:

Advantages: the pressure is high, the output air volume is proportional to the number of revolutions, the air compression process is carried out by several working impellers under the action of centrifugal force, the structure is simple, and the use and maintenance are convenient.

Scope of application: generally applicable to deep pools with large air volume and pressure.

Air volume control: Roots blower is a constant flow fan, and the main working parameter is air volume. The output pressure changes with the change of pipe and load, and the air volume changes little.

In conclusion, for the aeration tank in water treatment, if the required air volume and air pressure are large and the tank depth is deep, then roots blower may be more appropriate. If the required air volume and air pressure are small, and the pool depth is shallow, then the centrifugal fan may be more suitable. When selecting, you need to select according to the actual needs.