Challenge

Operational efficiency and reliability should be priorities in wastewater treatment plants, but many plants are not using energy-efficient modern technology.

An example of a WwTP willing to embrace change was a facility for over eight million people that was working with three energy-intensive blowers that no longer met today‘s standards. AERZEN was brought in to help the wastewater treatment plant become more efficient and reduce its carbon footprint.

Solution

Turbo technology for efficient aeration

For this replacement, a detailed calculation of profitability showed potential energy savings. All three blower units were showing significant signs of wear. Instead of an extensive and costly refurbishment, it was decided that these old units should be replaced with three new efficient AERZEN Turbo Blowers.

  1. AERZEN consulted with Air Technology to determine the current load requirement. A detailed profitability calculation indicated energy savings of over 20%.

  2. AERZEN supplied 3 Turbo G5plus blowers (3 x AT150 0.8S DN250), which modernised the plant as they replaced the competitor's ageing blowers which were consuming a lot of energy.

  3. While these works were going on, the client involved AERZEN Rental to avoid downtime, who supplied the end user with 2 BVO 55000 skid-mounted assemblies.

Result

Modern technology reduces CO2 emissions

The space-saving installation of the new turbo technology from the G5plus series enables an efficiency gain of approx. 21% for the aeration of wastewater tanks, which ultimately leads to savings in operating costs. Additionally, in comparison to the earlier ventilation systems, the noise emissions were significantly decreased.

Testimonial

"It’s looking like a really good installation, and it is much quieter and more efficient than the old system."
– Ian Moore, Technical Director, Air Technology

Summary

This wastewater treatment facility can save over £21,000 by utilising state-of-the-art technology, the AERZEN Turbo G5plus blower. The calculation assumes a payback period of about three years. The cost and energy savings also contribute to the customer‘s desire to reduce its carbon footprint.