Water & Wastes Digest | Kaeser Compressors

Picking the Right Blower Technology

Blowers are critical assets for wastewater treatment plants, and they are often the biggest energy consumers in the plant. Choosing the best blower is vital for plant operational success; however too often engineers, operators, designers, and managers stick to the existing technology in the facility or one they know best, rather than taking the time to compare blower technologies. Making the effort to reassess aeration needs and finding the best solution from a slightly wider range of options can go a long way to cutting energy costs while improving performance and control of the wastewater process.

Did you know the isentropic efficiency for variable speed screw and turbo blowers is 20-35% better than single speed multi-stage blowers?

For wastewater aeration and other applications that run all the time and with varying demands, the combination of higher efficiencies and better part load controls creates significant savings and better control of dissolved oxygen using screw or turbo blowers.

By taking the time to compare the isentropic efficiency (or specific performance) of different blowers, you could save BIG on energy savings. Evaluate your current power consumption and existing blower operations with an Air Demand Analysis, and then look at different options for blower technologies to see which will deliver the most effective aeration with the least energy. The differences will surprise you. Rotary screw and turbo blowers are far more efficient than rotary lobe and multi-stage centrifugals and have better energy efficiency over a wider flow range. These simple actions can save you thousands of dollars in energy savings each month.

If you are thinking about replacing aging blowers—or adding blowers to an expanding plant—you owe it yourself to compare. Fortune favors the bold.

Fill out the form below to take the first step and get a system assessment to learn about potentially better blower options.

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