A Robuschi blower at the Shepetivka Wastewater Treatment Plant.

Until now, the Shepetivka Wastewater Treatment Plant has been using a TV-80-1.6 turbo blower with a 160 kW electric motor for wastewater aeration. As of today, the amount of incoming wastewater has been reduced by more than half. Due to the lack of a mechanism for regulating the turbo blower’s performance, the overestimated amount of compressed air supplied to the aeration tanks led to an overconsumption of electricity at the wastewater treatment plant.

The solution to the problem was made possible by supplying an ItalianRobuschi EL 125/4P Robox Evolution blower with the characteristics required by the consumer. Many years of experience in supplying blowers to Dalgakiran Compressor Ukraine LLC allowed the company’s specialists to select the most economical blower that fully meets the needs of the treatment plant in compressed air. The power of the electric motor of the RobuschiEL 125/4P RoboxEvolution blower is 90 kW. In addition, the shaft speed of the electric motor installed on the EL 125/4P blower is 1500 rpm, while the old turbo blower used an electric motor with a speed of 3000 rpm. The lower speed of the electric motor reduced the load on the bearings and thus increased their service life to 70,000 hours.

The Robuschi EL 125/4P RoboxEvolution blower was put into operation in August 2014. Electricity savings amounted to more than 30,000 kW per month. During the first three months of operation, the new equipment allowed Shepetivka Municipal Utility Company to save more than UAH 100,000. Thus, the payback period for the new equipment, namely the Italian Robuschi EL 125/4P RoboxEvolution blower, is less than 10 months!

Among other things, the Robuschi EL 125/4P RoboxEvolution blower is equipped with an Italian FELM electric motor adapted for frequency control, which allows you to adjust the blower’s performance using a frequency converter. A wide range of capacity control while maintaining the working pressure makes it possible to supply the required amount of compressed air to the aeration tanks depending on the amount of incoming wastewater, thus obtaining additional energy savings.