Chick-Watson and Rennecker- Mariñas b, Acw, mg.min/L Organism Disinfectant L/mg-min or m²/J or J/m² E. coli Cl₂, pH 8.5, T=2-5°C 3.75 0.2 NH,CI NH,CH 0.0375 0.0327 CIO₂ 3.3 03 8330 UV 0.83 21° 11 10 0.33 Total coliform (wastewater or HOCI wastewater seed) OCI NH,CI CIO₂ Poliovirus UV HOCI 7304 609 0.005 0.1 3.0 0.9 0.2 NH,CI CIO2 0.47 03 0.85 UV 0.96 3.4 0.005 ollow wool | | || | 28 MS-2 Cl₂ NH,CI CIO₂ 03 UV Giardia Cl₂, pH 7 NH,CI CIO2 03 03 UV 68 300 0.21 0.02 - 1.9 38 C. parvum Cl₂, pH 6 NH,CI 0.0013 375 0.00077 5500 CIO2 0.083 35 03 1.7 0.22 03 0.83 UV 25 B. subtilis Cl2, pH 6 0.0006 NH,CH CIO2 0.00054 4560 0.13 03 UV 2.12 4.91 0.004 170 1. Using data from Table 13-3 of MWH, reproduced in your class notes, estimate the Ct required for a 3 log reduction of B. subtilis using a. Chlorine (Cl2 at pH=6) b. Chloramine (NH2Cl) c. Ozone Comment on the practicality of the calculated Ct values and their implications for which disinfectant(s) you would recommend.

Chick-Watson and Rennecker- Mariñas b, Acw, mg.min/L Organism Disinfectant L/mg-min or m²/J or J/m² E. coli Cl₂, pH 8.5, T=2-5°C 3.75 0.2 NH,CI NH,CH 0.0375 0.0327 CIO₂ 3.3 03 8330 UV 0.83 21° 11 10 0.33 Total coliform (wastewater or HOCI wastewater seed) OCI NH,CI CIO₂ Poliovirus UV HOCI 7304 609 0.005 0.1 3.0 0.9 0.2 NH,CI CIO2 0.47 03 0.85 UV 0.96 3.4 0.005 ollow wool | | || | 28 MS-2 Cl₂ NH,CI CIO₂ 03 UV Giardia Cl₂, pH 7 NH,CI CIO2 03 03 UV 68 300 0.21 0.02 - 1.9 38 C. parvum Cl₂, pH 6 NH,CI 0.0013 375 0.00077 5500 CIO2 0.083 35 03 1.7 0.22 03 0.83 UV 25 B. subtilis Cl2, pH 6 0.0006 NH,CH CIO2 0.00054 4560 0.13 03 UV 2.12 4.91 0.004 170 1. Using data from Table 13-3 of MWH, reproduced in your class notes, estimate the Ct required for a 3 log reduction of B. subtilis using a. Chlorine (Cl2 at pH=6) b. Chloramine (NH2Cl) c. Ozone Comment on the practicality of the calculated Ct values and their implications for which disinfectant(s) you would recommend.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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