PFAS-Selective Single-Use Ion Exchange Resin For Drinking Water Systems

Designing effective drinking water treatment for per- and polyfluoroalkyl substances (PFAS) requires strict adherence to system parameters to ensure reliable contaminant removal and long service life. High-selectivity single-use ion exchange resins offer rapid kinetics and compact footprints compared to traditional media, but operational success depends heavily on proper design. Pretreatment is vital, as total suspended solids, dissolved metals like iron and manganese, and residual oxidants represent primary failure points that can clog or degrade resin beds. Utilizing a lead-lag vessel configuration optimizes throughput, provides security against sudden breakthrough, and improves cost efficiency. Additionally, careful hydraulic control during system startup—including ramping flow to prevent water hammer and maintaining proper linear velocity—preserves the mass transfer zone.