A large combined sewage and stormwater station will be built in one of the largest cities in the world. The flow is high, the head is fairly low, and the footprint is limited.
Using Flygt submersible pumps in a circular wet well design, the footprint of the installation was kept to a minimum. For the flow and head conditions of the stormwater, Flygt propeller pumps were the most suitable. A circular sump is generally not preferred for propeller pumps due to the adverse flow conditions that can occur. To avoid such conditions, Flygt Formed Suction Intake devices were successfully used in order to achieve uniform inflow to the pumps