Disinfection Design: ct value
ct chlorine free cryptosporidium 2log to ct ozone bacteria 3log
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 chlorine free cryptosporidium 2log | mg·min/L | 5,000 | 4,000 | CT value for 2-log inactivation of Cryptosporidium with Chlorine (free) | Chlorine (free) | 2 | Cryptosporidium |
| ct value | ct chlorine free giardia lamblia 1log | mg·min/L | 30 | 20 | CT value for 1-log inactivation of Giardia lamblia with Chlorine (free) | Chlorine (free) | 1 | Giardia lamblia |
| ct value | ct chlorine free giardia lamblia 2log | mg·min/L | 55 | 45 | CT value for 2-log inactivation of Giardia lamblia with Chlorine (free) | Chlorine (free) | 2 | Giardia lamblia |
| ct value | ct chlorine free giardia lamblia 3log | mg·min/L | 80 | 70 | CT value for 3-log inactivation of Giardia lamblia with Chlorine (free) | Chlorine (free) | 3 | Giardia lamblia |
| ct value | ct chlorine free virus 2log | mg·min/L | 1.8 | 1.5 | CT value for 2-log inactivation of Virus with Chlorine (free) | Chlorine (free) | 2 | Virus |
| ct value | ct chlorine free virus 3log | mg·min/L | 2.6 | 2.2 | CT value for 3-log inactivation of Virus with Chlorine (free) | Chlorine (free) | 3 | Virus |
| ct value | ct chlorine free virus 4log | mg·min/L | 3.5 | 3 | CT value for 4-log inactivation of Virus with Chlorine (free) | Chlorine (free) | 4 | Virus |
| ct value | ct ozone bacteria 1log | mg·min/L | 0.01 | 0.005 | CT value for 1-log inactivation of Bacteria with Ozone | Ozone | 1 | Bacteria |
| ct value | ct ozone bacteria 2log | mg·min/L | 0.02 | 0.01 | CT value for 2-log inactivation of Bacteria with Ozone | Ozone | 2 | Bacteria |
| ct value | ct ozone bacteria 3log | mg·min/L | 0.03 | 0.015 | CT value for 3-log inactivation of Bacteria with Ozone | Ozone | 3 | Bacteria |
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