What are the advantages of roots blower in sewage treatment?

Roots blower is the mainstream equipment in sewage treatment (biochemical aeration), and its advantages are very clear. I will summarize it for you in the most straightforward and practical way on the project site:

First, the core advantages (aeration is the most critical)

Stable wind pressure, not afraid of water depth changes.

Roots is a positive displacement fan, and the wind pressure is basically constant.

The water depth of the pool is 3 ~ 6 meters, and the gas supply can be stable.

The fluctuation of water level will not lead to the fluctuation of aeration quantity.

Stable air volume and uniform aeration.

When the rotating speed is constant, the air volume is constant.

The aerobic pool has stable dissolved oxygen and good microbial treatment effect.

The effluent quality is more stable.

Low rotating speed, reliable operation and long service life.

Normal use for 3 ~ 5 years without overhaul.

Simple structure: casing, rotor, gear and bearing.

Easy maintenance and extremely low failure rate.

Suitable for long-term continuous operation

The sewage station does not stop for 24 hours.

Roots blower is heat-resistant and fatigue-resistant, suitable for long-term full load.

The efficiency is higher than that of ordinary centrifugal fan (middle and low wind pressure section)

Roots saves more electricity than centrifugation in sewage tanks with a water depth of 3 ~ 8 meters.

High utilization rate of air volume, no waste of air.

Not afraid of moisture and mild corrosion.

The sewage workshop environment is poor and humid.

Ordinary fans are easy to break down, and roots are more durable.

Can be used as antiseptic for acid-base wastewater.

Second, compare the advantages of other fans

Specific centrifugal fan:

The wind pressure is higher, the air volume is more stable, and the deep water aeration is stronger.

Specific magnetic levitation/air levitation:

Cheap price, simple maintenance, and no emphasis on the environment.