AWWA WQTC62526

This slide presentation outlines a pilot study for treating taste and odor compounds and the characterization of disinfection byproduct formation that had the objectives of: optimizing peroxide dose based onElectrical-Energy-per-Order (EEO) forreduction of geosmin and 2-MIB;monitoring the effect of AOP on chlorinedecay; and, monitor disinfection byproduct (DBP)formation following chlorination. The reasons for optimizing peroxide dose are outlined as follows: H₂O₂ exerts chlorine demand;removal of H₂O₂: addition of excess chlorine, andoperational concerns (correct dosing); and,optimal H₂O₂ dose from practicalstandpoint needs to beas low as possible, effective taste and odor removal, andminimize costs. The second objective involved:testing hypothesis that AOP alters chlorinedecay characteristics of a sample throughaltering NOM;testing initial water, UV photolysis alone, AOPtreatment (UV/H₂O₂)- 1.5, 2.5, 4 mg/L chlorine;monitor free chlorine residual at 15 min,1 hour, 24 hrs, 48 hrs; and, increasing chlorine consumption may impactDBP production. The third objective of DBP formationfollowing chlorination involved:peroxide quenched with 0.2 mg/Lcatalase enzyme;NaOCl dosed to result in residualof 1 mg/L after 24 hrs (2.5 mg/L);simulated distribution system(SDS) testing: 15 min, 24 & 48 hrs; and,measure THM and HAA9. Includes 2 references, tables, figures.

Product Details

Edition:

Vol. - No.

Published:

11/01/2005

Number of Pages:

22

File Size:

1 file , 870 KB