A Better Way to Aerate

Operators in New Ulm improve the treatment process and save significant energy with high-efficiency blowers and fine-bubble aeration.
A Better Way to Aerate
New K-Turbo (since purchased by Aerzen) blowers will save the New Ulm plant about $100,000 a year on electricity.n

When an energy audit recommended variable-frequency drives for blowers, team members at the New Ulm (Minn.) Wastewater Treatment Plant weren’t so sure that was the best way to reduce energy use.

“I don’t think the energy audit took into account the cost of VFDs for motors that...

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