How to select Roots blower for sewage treatment? How about the air volume?

When selecting Roots blower for sewage treatment, the following factors shall be considered:

1. Air volume: select a suitable fan according to the air volume demand of sewage treatment equipment. Generally, the flow range of Roots blower is 0.4~188m3/min, and the pressure range is 9.8-98KPa.

2. Model: determine the required pressure according to the water depth, determine the flow through the oxygen demand, and then select the appropriate model through the pressure and flow.

3. Quality: select high-quality fans to ensure performance and service life.

4. Maintenance: consider the maintenance of fans, and select fans that are easy to maintain.

The air volume can be calculated according to the following formula:

1. Flow method: air volume=design flow × air volume coefficient of sewage treatment equipment.

2. Load method: air volume=load of sewage treatment equipment × air volume coefficient of sewage treatment equipment.

The air volume shall be determined according to the specific design parameters and requirements. You can generally refer to the design manual or consult technicians to determine the air volume demand.