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

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Monochloramine Monitoring42• How can the a well designed analyzer support waterutilities in optimizing their disinfection process?– Measures Free Residual Chlorine (FRC), Total Chlorine 1(TC1), Total Chlorine 2 (TC2)– Calculate monochloramine (CMC, true monochloramine),Di-/ Tri-chloramines (CDC), Combined Chlorine (CCC)– Keep a minimum Free Chlorine (0.05 ppm) to avoidAmmonia overdosing– TC 2 should be equal [FRC & CMC] value, then theammonia has finished the conversion– If TC 2 is higher then [FRC&CMC], the difference is otherchloramines forms, indicating an overdose <strong>of</strong> Chlorine– Ammonia measurement or other additional instrumentsare not necessary but available if desiredDisinfection
Would You Benefit?43• Would you benefit from a single analyzer thatmonitors– Free chlorine– Total chlorine– Combined chlorine (chloramines)• If using monochloramine would you benefit froma single analyzer that measures– Free chlorine– Monochloramine– Total chlorine– Combined chlorine (chloramines)• Would you be interested in such an analyzer?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 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 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: Monochloramine Monitoring41• Chlo
Page 45: 45Questions?Thank you for your atte

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