RAETTS Air Suspension Blower: Smarter Operation, Lower Maintenance, Higher Efficiency
In modern wastewater treatment facilities, energy consumption and maintenance costs are two of the biggest operational challenges. For hospitals, which require reliable and quiet systems due to their sensitive environments, optimizing the aeration system is even more critical.
Recently, Hunan Children’s Hospital in China completed a successful energy-saving retrofit for its wastewater treatment system — replacing a traditional 55kW Roots blower with one 37kW RAETTS air suspension blower. The results speak for themselves: over 30% energy savings, noise reduction from 110dB to 65dB, and annual electricity cost savings of about USD 16,500.
From Roots Blower to Air Suspension Blower: A Smarter Choice
The original Roots blower at the hospital’s wastewater treatment plant operated continuously, consuming large amounts of electricity and generating high noise levels — up to 110 decibels. This not only increased the hospital’s operating costs but also caused maintenance fatigue due to frequent wear on bearings and belts.
By adopting RAETTS’ 37kW air suspension blower, powered by a Permanent Magnet Synchronous Motor (PMSM) and aerodynamic impeller, the hospital achieved a more efficient and quieter operation. The blower requires no lubrication, no gearbox, and no contact parts, which drastically reduces maintenance time and cost.
Proven Operational Benefits
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Energy Efficiency: The new system’s energy-saving rate exceeds 30%, reducing annual power consumption by 170,000 kWh.
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Lower Noise: The blower’s air suspension and aerodynamic design reduce operational noise to just 65dB, ideal for medical environments.
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Minimal Maintenance: Without mechanical friction components, the blower’s maintenance cycle is extended, saving both time and labor costs.
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Longer Service Life: Each RAETTS blower is designed for a 20-year service life, with a 2-year full warranty, ensuring long-term reliability.
Financial and Environmental Impact
Thanks to the retrofit, the hospital now saves around USD 16,500 in electricity bills each year. With an estimated payback period of one year, the investment is quickly recovered. Beyond financial savings, the reduction in noise and emissions contributes to a cleaner, quieter, and more sustainable medical environment.
This transformation not only demonstrates the strong return on investment (ROI) of air suspension technology but also shows how hospitals and other public institutions can reduce operational costs while achieving sustainability goals.
RAETTS: Redefining Efficiency in Wastewater Treatment
As one of the leading manufacturers of high-efficiency blowers, RAETTS continues to innovate in the field of air suspension and maglev turbo blowers. Each blower is 100% manufactured in-house — from PMSM motor to three-dimensional flow impeller — ensuring consistent quality and reliability.
By integrating advanced aerodynamic design and intelligent control systems, RAETTS blowers not only reduce energy consumption but also make daily operation and maintenance easier for engineers and operators.
Conclusion
The successful upgrade at Hunan Children’s Hospital highlights how RAETTS’ air suspension technology transforms traditional wastewater treatment operations. Lower maintenance, longer lifespan, quieter performance, and substantial energy savings — all make it a smart, sustainable choice for hospitals, industrial plants, and municipal wastewater projects.
With hundreds of similar retrofits across China and abroad, RAETTS continues to lead the movement toward energy efficiency and intelligent wastewater treatment.
✅ Want to learn more about RAETTS blower retrofit solutions?
Contact us today to discuss your project and discover how much energy and maintenance cost you can save with RAETTS.
E-mail: sales@raettsgroup.com
WhatsApp: +86 137 1270 2424
