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AWWA ACE56205
- Formation and Speciation of Trihalomethanes and Haloacetic Acids in Chlorinated Nanofiltered Waters
- Conference Proceeding by American Water Works Association, 06/16/2002
- Publisher: AWWA
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This paper focuses on several aspects of disinfection byproduct (DBP) control by nanofiltration (NF) membranes such as: changes in natural organic matter (NOM) reactivity towards free chlorine between feed and permeate waters; relationships between trihalomethanes (THMs), haloacetic acids (HAAs), total organic halide (TOX), and dissolved organic carbon (DOC) in chlorinated feed and permeate waters; and, universalities in THM and HAA formation and speciation including bromine incorporation and bromide utilization. One important contribution of this work is that all nine HAAs (HAA9) containing chlorine and bromine (species in HAA5 and CBr3COOH, CHClBrCOOH, CClBr2COOH, CCl2BrCOOH) were analyzed. All bench-scale ICR experiments were conducted using the Rapid Bench-Scale Membrane Test (RBSMT) methodology. One of the important components of ICR treatment studies were the SDS testing of nanofilter feed and permeate waters. Deionized water (total dissolved solids (TDS) concentration less than ~ 1 mg/L) was filtered at the start of each set of RBSMT experiments for approximately 24 hours. Includes 31 references, table, figures.
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