DENVER — The Water Research Foundation (WRF), a leading sponsor of research supporting the water community, and Soquel Creek Water District, recently completed bench- and pilot-scale testing to explore treatment process efficacies for removing hexavalent chromium (Cr(VI)) from the District’s groundwater supplies, according to a press release.

The primary goals of this study, continued the release, were to evaluate Cr(VI) removal performance of strong base anion exchange (SBA-IX) and to compare and validate commercially available SBA-IX resin performance in terms of Cr(VI) exchange capacity, regeneration quality, and frequency requirements.

These tests also investigated innovative brine management techniques, which would render the spent brine waste less hazardous and reduce expenses due to costly disposal.

“This research project demonstrated a viable treatment method for hexavalent chromium and developed an innovative method to minimize residuals,” said Rob Renner, executive director of the Water Research Foundation. “These results will be extremely valuable to utilities in California and states considering regulating hex chrome.”

The research report, Hexavalent Chromium Treatment with Strong Base Anion Exchange (Project #4488), can be accessed through the WRF website.