The Crooked Spring Water Treatment Plant PFAS Treatment Project involves the construction of a new treatment process designed to remove PFAS using granular activated carbon (GAC). A dedicated PFAS Treatment Building will be constructed of masonry brick with a hip roof, measuring approximately 131’-4” by 56’-8” with a depressed main process floor. Inside, the facility will house three process trains, each consisting of two 12-foot diameter pressurized GAC vessels, for a total of six vessels, along with provisions for future ion-exchange vessels. The building will also include a two-celled backwash supply tank with vertical turbine pumps, an electrical room with motor control and variable frequency drive systems, and a mechanical room with water and heating systems.
In addition to the new treatment building, the project includes construction of a two-celled spent wash water recycle tank with floating decant systems and recycle pumps, as well as targeted modifications to the existing Crooked Spring WTP. These upgrades include installation of a new sodium hypochlorite feed system, reorganization and replacement of analyzers, and other improvements to support process efficiency. Supporting site work includes stormwater infiltration trenches, a sanitary pump station, yard piping, and related appurtenances.
