Problem: The 90-year-old, manually operated Spring Creek Water Treatment Plant in Springfield, Illinois, had far exceeded its operational lifespan. Designing a new plant presented unique pumping challenges due to a combined sewer system.
Solution: A new $120 million treatment plant design specified several Pentair Fairbanks Nijhuis pumps at the influent station. Return activated sludge is moved by 10 12-inch Vertical Close-Coupled Angleflow pumps. The pumps deliver this constant movement, while providing backups for maintenance. Vertical-turbine solids handling pumps from Fairbanks Nijhuis, sized at 20 and 30 inches, help the influent station meet maximum flow demands.
Result: For more than a decade, the pumps have performed reliably with 16 mgd average flows and a maximum storm capacity of 120 mgd. 888-416-9510; www.pentair.com/future-proof
