Managing PFAS in RO Reject Through Foam Fractionation and Electro-Oxidation for Onsite PFAS Destruction – a Municipal Drinking Water

PFAS management in reverse osmosis reject streams from municipal drinking water systems is addressed through combined foam fractionation and electrochemical oxidation technologies. Foam fractionation concentrates surfactant-associated PFAS compounds from RO concentrate, while electrochemical oxidation achieves onsite destruction of recovered PFAS. The integrated approach addresses the persistent nature of PFAS in conventional treatment residuals and provides a viable concentrate management pathway to eliminate PFAS from RO reject streams without off-site disposal.