Disinfection Design: ct value
ct chloramine virus 3log to ct chlorine dioxide giardia lamblia 1log
Wastewater disinfection design data from Metcalf & Eddy 5th Ed. Covers CT values (concentration × time) for log inactivation of bacteria, viruses, Cryptosporidium, and Giardia lamblia by chlorine, chloramine, chlorine dioxide, ozone, and UV radiation; specific lethality coefficients; physical/chemical properties of Cl2, ClO2, SO2, and O3; ozone Henry's law constants; HOCl ionization constants vs. temperature; chloramine activation energy; TDS contributions from breakpoint chlorination; dechlorination agent stoichiometry; chlorine dosage ranges for process applications; total coliform removal by treatment process; disinfection byproduct (DBP) compounds; ozone system energy consumption; and peracetic acid (PAA) commercial formulation specifications.
| parameter type | parameter id | ct unit | ct value max (mg·min/L or mJ/cm2) | ct value min (mg·min/L or mJ/cm2) | description | disinfectant | log inactivation (log10) | organism |
|---|---|---|---|---|---|---|---|---|
| ct value | ct chloramine virus 3log | mg·min/L | 600 | 550 | CT value for 3-log inactivation of Virus with Chloramine | Chloramine | 3 | Virus |
| ct value | ct chloramine virus 4log | mg·min/L | 800 | 750 | CT value for 4-log inactivation of Virus with Chloramine | Chloramine | 4 | Virus |
| ct value | ct chlorine dioxide bacteria 1log | mg·min/L | 0.6 | 0.4 | CT value for 1-log inactivation of Bacteria with Chlorine dioxide | Chlorine dioxide | 1 | Bacteria |
| ct value | ct chlorine dioxide bacteria 2log | mg·min/L | 1.2 | 0.8 | CT value for 2-log inactivation of Bacteria with Chlorine dioxide | Chlorine dioxide | 2 | Bacteria |
| ct value | ct chlorine dioxide bacteria 3log | mg·min/L | 1.8 | 1.2 | CT value for 3-log inactivation of Bacteria with Chlorine dioxide | Chlorine dioxide | 3 | Bacteria |
| ct value | ct chlorine dioxide bacteria 4log | mg·min/L | 2.4 | 1.6 | CT value for 4-log inactivation of Bacteria with Chlorine dioxide | Chlorine dioxide | 4 | Bacteria |
| ct value | ct chlorine dioxide cryptosporidium 1log | mg·min/L | 150 | 120 | CT value for 1-log inactivation of Cryptosporidium with Chlorine dioxide | Chlorine dioxide | 1 | Cryptosporidium |
| ct value | ct chlorine dioxide cryptosporidium 2log | mg·min/L | 260 | 235 | CT value for 2-log inactivation of Cryptosporidium with Chlorine dioxide | Chlorine dioxide | 2 | Cryptosporidium |
| ct value | ct chlorine dioxide cryptosporidium 3log | mg·min/L | 400 | 350 | CT value for 3-log inactivation of Cryptosporidium with Chlorine dioxide | Chlorine dioxide | 3 | Cryptosporidium |
| ct value | ct chlorine dioxide giardia lamblia 1log | mg·min/L | 5.5 | 5 | CT value for 1-log inactivation of Giardia lamblia with Chlorine dioxide | Chlorine dioxide | 1 | Giardia lamblia |
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