Impact of EPA Drinking Water Stage 2 Disinfectant and Disinfectant ...

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36Desired Analyzer Design FeaturesEasy maintenanceMaintained and operated to a demonstrably highstandard at all times;• Maintenance-free analyzer does not exist!• Maintenance must be possible without usingspecial tools and easy to perform.• Parts should be easily accessibleDisinfection
37Summary of Desired FeaturesA continuous photometer system with DPD thatmeasures free chlorine, monochloramine, and totalchlorine:– Provides reliable reading for the primary disinfectant.– Provides reliable reading for monochloramineproduction and process control.– Provides accurate information about DBP pre-cursorforming or process problems– Informs the operators about validity of his result– Eliminates need for multiple analyzersDisinfection
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 and 22: 21CleanWaterDBP: Free Chlorine Trea
Page 23 and 24: Chloramination Process23• To form
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: 35Desired Analyzer Design FeaturesQ
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

Impact of EPA Drinking Water Stage 2 Disinfectant and Disinfectant ...

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