The Haliotis Wastewater Treatment Complex was designed, built and operated by SUEZ Treatment Solutions (formally known as Degrémont) since 1988, with its main objective to treat wastewater. Although composed of a primary treatment followed by settling, the majority of the treatment took place in the aeration tanks where carbon degradation occurred through air injection to the order of 22,000 Nm³/h using three (3) geared single stage centrifugal blowers made by Siemens* (*previously by HV Turbo). SUEZ TS decided to test the APG-Neuros High Speed Turbo Blower technology for a period of four (4) months starting in October, 2012. The APG-Neuros DEMO blower would be compared in performance with the existing geared single stage centrifugal blower, and a formal report would be issued to highlight its advantages and disadvantages observed during the testing period.
Modernization2
Dual core installation
The DEMO High Speed Turbo Blower model used for testing was an APG-Neuros NX350-C080 with a rated capacity of 9600 Nm³/h in comparison with the existing Siemens KA10 model single stage centrifugal blowers. The APG-Neuros turbo blower had a Programmable Logic Controller with an HMI ʺtouch screen” to monitor several operating parameters such as airflow, discharge pressure and energy consumption. SUEZ TS installed an energy meter at the power supply point to correlate with the indicated power consumption values along with a Pitot-static or Prandtl tube to measure the air flow rate. In reporting the power consumption, the measurements chosen were those with the most conservative values obtained from the power meter and the Pitot tube. The average value (Wh/Nm³/Barg) measured was 31.6 for the APG-Neuros Turbo Blower and 38.7 for the HV Turbo blower. The difference of which represents a 22% energy savings with the APG-Neuros Turbo Blower compared to the existing HV Turbo blower.
Modernization5
The APG-Neuros NX350-C080 Turbo Blower was successful at demonstrating power consumption savings at the Haliotis WWTP. To solidify the findings, a third party inspection of the electrical systems was completed by Veritas, which demonstrated the good condition of the electrical components following one year of operation. As a result, SUEZ TS purchased a Dual Core blower, NX700-C100, to replace the HV-Turbo turbo blower. The APG-Neuros NX700-C100 Turbo Blower offered a smaller footprint as well as demonstrated a lower vibration level and acoustic profile, both of which were monitored within the blower room. The noise level was observed at around 80 dBA (+/- 2 dBA) with the NX350 compared to 94 dBA with the existing Siemens blower, thus creating a safer working environment for the facility staff. The NX700-C100 Turbo Blower also featured an easy to use HMI touch screen which allows instant control and monitoring of blower status and data history not offered with the HV-Turbo turbo blowers. The NX700-C100 Dual Core Blower provided similar energy savings as the NX350-C080.
Modernization3
Modernization4
The improvement of the energy efficiency of the biological treatment air supply in the Haliotis WWTP was a major component of the Energy Efficiency Action Plan, which is part of the ISO 50001 Energy Management System put in place at the Nice WWTP, certified in 2014.◆
A division of APGN, APG-Neuros holds a strong foundation both in aeronautic technology and engineering. APG-Neuros was founded in 2006 to distribute, manufacture, provide aftermarket support and continued development of the high efficiency turbo blowers and complete aeration systems for the municipal and industrial markets in North America and Europe. For more information, visit www.apg-neuros.com.

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MODERN PUMPING TODAY, August 2015
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