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.
Organic Chemistry
8th Edition
ISBN:9781305580350
Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote
Publisher:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote
Chapter7: Alkynes
Section: Chapter Questions
Problem 7.7P
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Transcribed Image Text: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
Transcribed Image Text: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.
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