HiPOx Case Study: Class I Industrial Waste Disposal Site Stringfellow Acid Pits Superfund Site, CA

Over the past 50 years more than 34 million gallons of electroplating, metals finishing, and pesticide industrial waste was released from the Stringfellow facility near Riverside, California. The resulting groundwater contaminant plume threatened nearby water supplies that serve nearly 5 million people. A pre-treatment process (PTP) system using Fenton's Reagent Oxidation (FRO) process was unable to consistently achieve discharge limits for 1,4-dioxane and NDMA. Pilot testing using APTwater's HiPOx Advanced Oxidation Process (AOP) demonstrated the ability to consistently achieve permit limits, even under upset conditions that were 30% greater than the original system design. In addition, the HiPOx process was shown to provide ~35% savings when compared to competing technologies. As a result of the success of the rigorous pilot testing at the site, the HiPOx process was selected as the AOP technology for the full-scale new PTP project, which is scheduled for completion in 2011.