Impact of EPA Drinking Water Stage 2 Disinfectant and Disinfectant ...
Impact of EPA Drinking Water Stage 2 Disinfectant and Disinfectant ... Impact of EPA Drinking Water Stage 2 Disinfectant and Disinfectant ...
22DBP: MonochloramineChlorinationAmmonia additionTreatedWaterMainlyFree ChlorineMainly Monochloramine.Some byproducts mightbe formedDistributionFreeChlorineFree ChlorineBefore Ammonia additionMonochloramineTotalChlorineDBP0.05ppm 1.00ppm 1.1ppm 0.05ppmFree ChlorineMonochloramineDisinfection byproductsIncreasing DBP values will raise alarmsand the source can be investigated.Disinfection
Chloramination Process23• To form the monochloramine compound, theappropriate weight ratio of chlorine and ammoniamust be determined and then properly managed.• Free ammonia entering the distribution systemmust be controlled to reduce the potential fornitrification.• Chloramines are weaker oxidizing agents,therefore a higher disinfectant residual is requiredfor similar results. A chloramine residual of 2.0mg/L is comparable to a free chlorine residual of0.5 mg/L.Disinfection
- Page 1 and 2: 1Impact of EPA Drinking Water Stage
- Page 3 and 4: 3Safe Drinking Water Act of 1974•
- Page 5 and 6: Stage 2 Rule5• The Stage 2 Disinf
- Page 7 and 8: Chemistry of Chlorination7• Free
- Page 9 and 10: 9Chemistry of Chlorination• Free
- Page 11 and 12: 11Chemistry of Chlorine• Atomic N
- Page 13 and 14: 13Chemistry of Chlorination• Duri
- Page 15 and 16: 15History of Monochloramine Use•
- Page 17 and 18: 17Chemistry of ChloraminesThe Basic
- Page 19 and 20: 19Chemistry of Chloramines• The m
- Page 21: 21CleanWaterDBP: Free Chlorine Trea
- Page 25 and 26: Chloramination Process25• Chlorin
- Page 27 and 28: 27Chemical AdditionChemicalFeed Rat
- Page 29 and 30: 29Chemical Addition• Goal: 5:1 we
- Page 31 and 32: 31Measurement ChallengesPhotometry,
- Page 33 and 34: 33Desired Analyzer Design FeaturesP
- Page 35 and 36: 35Desired Analyzer Design FeaturesQ
- Page 37 and 38: 37Summary of Desired FeaturesA cont
- Page 39 and 40: 39Measuring Process1. Zero measurem
- Page 41 and 42: Monochloramine Monitoring41• Chlo
- Page 43 and 44: Would You Benefit?43• Would you b
- Page 45: 45Questions?Thank you for your atte
22DBP: MonochloramineChlorinationAmmonia additionTreated<strong>Water</strong>MainlyFree ChlorineMainly Monochloramine.Some byproducts mightbe formedDistributionFreeChlorineFree ChlorineBefore Ammonia additionMonochloramineTotalChlorineDBP0.05ppm 1.00ppm 1.1ppm 0.05ppmFree ChlorineMonochloramineDisinfection byproductsIncreasing DBP values will raise alarms<strong>and</strong> the source can be investigated.Disinfection
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