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AWWA WQTC65769
- Small Systems Remove TOC from Groundwater the Easy Way
- Conference Proceeding by American Water Works Association, 11/01/2007
- Publisher: AWWA
$12.00$24.00
Total organic carbon (TOC) present in source waters can be the precursor to the formation ofdisinfection byproducts (DBP) when chlorine is added for disinfection. While ubiquitous tomost surface waters, TOC can also be present in some groundwater sources. Although thetreatment techniques applicable to TOC reduction/removal in surface waters can be used ongroundwater systems, their complexity and costs typically are factors that concern mostgroundwater systems. The typical groundwater system is small, with limited staffing andexperience in operating complex water treatment processes.In this case study, the authors present the results of pilot testing and implementation of ananionic exchange resin process to remove elevated TOC from groundwater facilities in order toreduce the DBP formation potential below the Stage 1 DBPR levels. Key information to bepresented will include preliminary engineering evaluations, results from bench scale and pilottesting, critical issues for design and operation, costs (operational and capital), and full-scaleperformance to date. The case study demonstrates that, for small systems with elevated TOClevels, the application of an anionic exchange resin is a feasible, cost-effective alternative to beconsidered along with other more complex TOC reduction/removal strategies. Includes tables, figures.
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