Case Study | January 13, 2014

Minimizing Energy Use At Pump Stations With Extreme Variable Flows

Source: Flygt -- A Xylem Brand

Every spring, the wastewater municipality in Dalarna, Sweden, experienced melting snow and heavy rainfall that caused a dramatic increase in pump station inflow. To handle this seasonal volume, the station had oversized pumps that consumed more energy than needed during drier months. This case study illustrates how the installation of a variable-speed pump controller decreased energy consumption by almost 50 percent while allowing for variations in flow.