Wastewater pumping stations have a maximum hydraulic capacity. Knowing the hydraulic limits of a wet well is the challenge to the design engineer. Physical modeling and numerical analysis computer programs are tools that the design engineer can use to aid in the evaluation of pumping
station wet wells. A physical model was used in the evaluation of a 10 mgd raw sewage pumping station. The model results determined that the most practical method of expanding the current structure while reducing the damaging effects of pre-rotation and free surface vortices was to fill the
existing wet wells with concrete and install immersible pumps at the end of the headwork's inlet channel. Construction cost of the proposed expansion was 384,850 versus a new influent pumping station and headworks complex estimated at 2.9 million. Challenges to the designer as well as
contractor are discussed in this paper.
Proceedings of the Water Environment Federation is an archive of papers published in the proceedings of the annual Water Environment Federation® Technical Exhibition and Conference (WEFTEC® ) and specialty conferences held since the year 2000. These proceedings are not peer reviewed. WEF Members: Sign in (right panel) with your IngentaConnect user name and password to receive complimentary access.