This half-hour brown bag Webinar will provide you with an overview of technologies demonstrated at Glendale, California, to remove total and hexavalent chromium from its groundwater to low concentrations, which were provided the state to assist in its determination of a Cr(VI) MCL expected in July 2013. In addition, this session will serve as practical guidance for systems’ personnel who need to consider implementing similar treatment to remove hexavalent chromium from water sources.
In 2001, the City of Glendale sought to reduce hexavalent chromium in its groundwater to less than 5 µg/L (compared with the California regulatory standard of 50 µg/L) due to community concerns about the compound. At the time, no technology had been proven in flow-through drinking water treatment systems to achieve these clean-up levels. In response, a decade-long program was developed, the Advanced Water Treatment Research Program for Hexavalent Chromium in Drinking Water, to provide technical feasibility and cost information for removing hexavalent chromium from the city’s, and other utilities’, groundwater supplies.
The project involved three phases:
Having demonstrated the capability of removing hexavalent chromium through WBA resin and RCF, the pilot studies continue to assess additional anion exchange resins and adsorptive media. The WBA demonstration system continues to treat more than 400 gpm from one of the city’s wells.
800 551.7379 (614 898.7791 outside the United States)
8 a.m.-5 p.m. ET Monday through Friday
fax 614 898.7786
PO Box 715435
Columbus, OH 43271-5435
National Ground Water Association
601 Dempsey Rd.
Westerville, OH 43081
(614 898.7791 outside the US)
fax 614 898.7786