Advanced Processes for Simultaneous Arsenic and Manganese Removal

The overall objectives of this project were to modify, demonstrate, and optimize an existing treatment process to simultaneously remove both arsenic and manganese. The EPA established a new maximum contaminant level (MCL) for arsenic at 10 µg/L in January 2002, with compliance required by February 2006. Additionally the project set to establish an efficient process design approach for implementing this process. For this study the existing oxidation/filtration process at the Southern California Water Company's (SCWC) Centralia site was modified to include a ferric chloride feed system and a backwash waste handling system.