Energy-efficient and powerful: The iTURBO®-Blower Solution in Prerov, CZ

Efficient submerged aeration systems in wastewater treatment involves an air supply to compress the air for discharge beneath the water surface. INVENT has designed an advanced turbo blower and implemented manufacturing techniques that allow every blower to be customized to the unique requirement of each wastewater treatment plant. This ensures the energy consumption and operating range is optimized for the specific process. The result is a dedicated machine operating at peak performance.

First installation in the Czech Republic

The wastewater treatment plant in Prerov in the eastern part of the Czech Republic, commissioned in 1969, is designed for a municipal capacity of 95,000 p.e. (population equivalent). In addition, the wastewater from a nearby sugar beet factory is discharged into the plant between October and February. In the late 1990s, several expansions were carried out to counteract the increasing hydraulic pressure on the facility. The installation of an iTURBO®-Blower took place in Prerov when the blowers for the disc aerators installed in the aeration tanks were successfully replaced in 2020.

Optimization of Energy Consumption

Several INVENT products have already been installed at the facility to optimize energy usage: 2017 the robust hyperboloid-shaped, HYPERCLASSIC®-Mixers for the anaerobic tanks and 2022 innovative, high-quality CYBERSLUDGE®-Mixers for the digesters. Using a Computational Fluid Dynamics (CFD) analysis, also developed by INVENT, and additional fine-tuning, maximum efficiency was achieved for the iTURBO®-Blower. A comprehensive analysis of the potential energy savings at the Prerov wastewater treatment plant convinced the operators to replace the four old 132 kW machines with four units of the more efficient 75 kW iTURBO®-Blowers. This resulted in a 36% reduction in electricity consumption for blowers and a 65% increase of the provided air to the aeration system (from 10,802 m³/day to 17,847 m³/day).

Space and Noise Reduction

The building that housed the old blowers was able to be repurposed. The significantly more compact size of the iTURBO®-Blowers even created additional storage space. The noise level was also noticeably reduced thanks to the quieter iTURBO®-Blowers.

Conclusion

The project in Prerov clearly demonstrates the advantages of the iTURBO®-Blower technology, both in terms of energy efficiency as well as space and noise reduction. It highlights INVENT’s expertise in developing customized solutions that optimally meet the specific requirements of wastewater treatment plant operators.