For almost 50 years, CPS Energy of San Antonio has drawn water from the San Antonio River to recharge two man-made lakes that provide cooling water for their power plants. As is often the case with flat-water streams, the River can experience high water events that churn the meandering channel into a raging torrent of silty muck. These incidents left in their wake a thick buildup of mud on the floors of the 36-foot by 20-foot by 50-foot intake structure of the pump station.
Working closely with a Xylem representative and Flygt applications engineers, CPS Energy selected four Xylem Model 4640 mixers using mast guide rails for ease of maintenance to be installed at the CPS pumping station.
Read the full case study to learn how the mixers have continued to perform throughout the many high water events that have followed, solving the problem caused by micron-size silt and saving the man-hours once needed to clear the pits to help to ensure a reliable source of makeup water from the river.