Hexavalent Chromium Removal Using Anion Exchange and Reduction With Coagulation and Filtration [Project #3167]

摘要

OBJECTIVES:The key objectives of this project included (1) conducting treatment studies to confirm the efficiencies of weak-base anion (WBA) exchange resins for hexavalent chromium [Cr(VI)] removal from groundwater; (2) characterizing WBA resin residuals to elucidate Cr(VI) removal mechanism(s); (3) investigating residuals handling and disposal options, (4) refining cost estimates of effective Cr(VI) treatment technologies, including WBA, strong-base anion (SBA) exchange resin, and reduction/coagulation/filtration (RCF); and (5) convening an expert panel to recommend treatment technologies for demonstration-scale testing.