Circular wastewater lift station

Challenge
A 54,000-acre service area in a major city in Texas required assistance to handle a projected 50% increase in population and subsequent increase in wastewater processing demands.

Solution
With engineering expertise from Flygt, the city built the largest submersible pump station in the world with 14 constant-speed Flygt submersible pumps in operation. Prior to installation and commissioning, the lift station design underwent physical scale model testing to assure satisfactory flow conditions. The circular lift station design accommodates the entire facility within the confines of the restricted site and enables the use of sunken caisson construction. This circular wastewater lift station provided estimated cost-savings of approximately 37%, saving millions of dollars. City engineering staff reports that the multiple pump facility operates reliably and cost-effectively under variable conditions.