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AWWA ACE90109
- Use of Anion Exchange Resins for the Removal of Trihalomethane Precursors
- Conference Proceeding by American Water Works Association, 01/01/1990
- Publisher: AWWA
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This study was conducted on filtered water (prior to post- disinfection) at the water treatment plant in the City of Houston that treats Lake Houston water. Lake Houston contains both urban and rural runoff and has a total organic carbon (TOC) of 4 to 8 mg/L. For the purpose of investigating the control of trihalomethanes (THMs) using ion exchange resins, trihalomethane formation potentials (THMFPs) of each organic fraction (greater than 10K, 5-10K, 1-5K, 0.5-1K and less than 0.5K AMW) in the influent to the various column systems under study were compared. The specific objectives of this study were to determine: 1) the chlorine reactivity of the various molecular weight fractions of natural organic carbon, 2) the breakthrough pattern of THM precursors in various organic fractions, and 3) the impact of regeneration and recycling regenerant on ion exchange resin performance.
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