RAETTS Completes 220kW Maglev Turbo Blower Upgrade at Glazov WWTP — A Major Roots Blower Replacement Delivering 30–40% Energy Savings

Russia’s Glazov Wastewater Plant Transitions From Traditional Roots Blowers to High-Efficiency Maglev Blower Technology

RAETTS is proud to announce the successful installation and commissioning of two 220kW Maglev Turbo Blowers at the Glazov Wastewater Treatment Plant in Russia, marking a major technological upgrade from the site’s aging Roots blowers. This project represents a growing global shift toward high-speed, energy-saving, and low-maintenance blower technology across WWTPs.

The newly installed RAETTS maglev blowers have already demonstrated 30–40% real-world energy savings, significantly reducing the facility’s aeration energy consumption—the biggest power load in wastewater treatment. Based on operational data, the project is expected to achieve full payback within one year, driven solely by reduced electricity costs.

Why Glazov WWTP Chose RAETTS Maglev Blowers

Modern wastewater plants require aeration equipment that is both energy-efficient and operationally stable. The Glazov engineering team evaluated multiple alternatives and selected RAETTS due to several key advantages:

1. PMSM High-Efficiency Motor (up to 96%)

RAETTS maglev blowers use a Permanent Magnet Synchronous Motor, operating up to 50,000 rpm with outstanding electrical efficiency. Compared to traditional three-phase asynchronous motors, PMSM delivers higher torque, lower losses, and superior energy performance.

2. Magnetic Bearing Technology — Zero Contact, Zero Oil

Traditional Roots blowers rely on mechanical bearings, lubricating oil, and constant maintenance.
In contrast, RAETTS magnetic bearings provide:

• Fully suspended, frictionless operation

• No lubrication or oil replacement

• Near-zero vibration

• Long operational lifespan

This reduces maintenance workload dramatically and eliminates contamination risks inside biological treatment tanks.

3. High-Efficiency Three-Dimensional Impeller

With aerodynamic efficiency up to 87%, RAETTS’ 3D impeller design delivers greater airflow and pressure while consuming far less energy. This is a major advantage over the 60% efficiency typical of two-dimensional Roots impellers.

4. Advanced UFRC Algorithm & Self-Sweep Frequency

RAETTS’ independent control system ensures:

• Early detection of rotor imbalance

• Automatic correction during operation

• Stable airflow and pressure

• Optimized aeration for biological treatment

This is particularly important for WWTPs that require consistent DO levels and frequent load fluctuations.

Noise, Maintenance, and Operating Cost Comparison

Noise Level

• Maglev blower: <80 dB, smooth and quiet

• Roots blower: 95–105 dB, strong vibration and noise

The difference is immediately noticeable in blower rooms and improves operator comfort.

Maintenance

• Maglev blower: No oil, no gears, minimal wearing parts

• Roots blower: Oil replacement, belt tensioning, gear lubrication, bearing checks

Maglev blowers are essentially maintenance-free, reducing downtime and labor cost.

Energy Consumption

Aeration often accounts for 50–65% of a plant’s total energy use.
Replacing Roots machines with RAETTS maglev blowers can cut that consumption by 30–40%, the main reason the Glazov upgrade achieves a 1-year ROI.

A Major Milestone for WWTP Modernization

The Glazov project demonstrates a growing industry trend:
Wastewater treatment plants worldwide are moving from outdated Roots technology to high-efficiency turbo blowers.

As global energy costs rise and sustainability becomes mandatory, technologies like maglev blowers, air bearing blowers, and high-speed turbo blowers are becoming the new standard for aeration.

RAETTS Leads the Future of Smart, Energy-Efficient Aeration

With successful installations across Asia, Europe, Russia, and the Middle East, RAETTS continues to deliver advanced blower solutions that combine efficiency, reliability, and intelligent control.

For water utilities, EPC contractors, and industrial wastewater treatment projects seeking long-term cost reduction, RAETTS provides a proven, future-ready solution for aeration upgrades.

E-mail: sales@raettsgroup.com

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