For many years, maintaining efficient aeration control was a challenge for the 24 MGD Muncie, Indiana, Water Pollution Control Facility (WPCF). A manually operated system combined with severe mixing-limited conditions resulted in over-aeration and wasted energy. The plant alleviated this problem with automated control and Pulsed Aeration, allowing it to satisfy the needs of the bacteria and mix basin contents while expending less energy.

A deep-tunnel pumping system for Columbus, Ohio’s OARS project uses adjustable-speed Flygt pumps to manage extreme head variations and efficiently dewater a 215-foot-deep, high-capacity sewer tunnel after major flow events.