Supported by Application Expertise and Site-specific Design, Proven Cr(VI) Removal Pathways
Hexavalent chromium (Cr(VI)) is a regulated drinking water contaminant and a known health concern. Selecting the right treatment approach requires balancing performance, operating complexity, residuals management, and long‑term cost—while staying compliant with state and federal MCLs.
Hexavalent Chromium Requires a Targeted Approach
Not all chromium treatment challenges look the same. Hexavalent chromium behaves differently depending on water chemistry. Competing anions, alkalinity, sulfate, TOC, uranium, and pH all influence treatment performance and operating cost. As a result, chromium treatment technologies must be carefully selected and designed for the specific conditions at each site.
Ion exchange is a highly effective technology for Cr(VI) because it selectively removes chromate species while supporting flexible system designs—whether the objective is full treatment, partial treatment with blending, or footprint constrained upgrades.
Selective removal with predictable performance
Ion exchange removes hexavalent chromium by exchanging chromate anions for other ions on the resin. Compared to alternative technologies, ion exchange systems can be designed to:
- Achieve low‑ppb compliance targets
- Operate in compact footprints
- Support either single‑use or regenerable operating strategies
- Accommodate partial treatment and blending approaches for cost optimization
Purolite™ Resins are engineered to perform across a range of influent chemistries, enabling utilities to match resin type and operating strategy to local constraints and preferences.
Purolite™ S106 Epoxy, Polyamine Chelating Resin, Potable Water Grade
Purolite™ PGW6002E Polystyrenic Gel, Type I Strong Base Anion Resin, Chloride Form,
Potable Water Grade
Purolite™ A600E/9149 Polystyrenic Gel, Type I Strong Base Anion Resin, Chloride Form,
Potable Water Grade
