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AWWA QTC97054
- Analyzing the Impacts of Predisinfection Through Jar Testing
- Conference Proceeding by American Water Works Association, 01/01/1997
- Publisher: AWWA
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A key issue during the Federal Advisory Committee Act discussions of the Microbial/Disinfection Byproduct (M/DBP) rule cluster was the allowance of predisinfection CT credit when chlorine-based disinfectants were added prior to the removal of DBP precursors in a conventional treatment plant. To address this issue, the impact of the point of chlorination during coagulation, flocculation and sedimentation of DBP formation was examined for a representative range of waters and treatment conditions. Both conventional and enhanced coagulation conditions were examined.