Disinfection Design: ct_value
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_bacteria_1log | mg·min/L | 70 | 50 | CT value for 1-log inactivation of Bacteria with Chloramine | Chloramine | 1 | Bacteria |
| ct_value | ct_chloramine_bacteria_2log | mg·min/L | 150 | 95 | CT value for 2-log inactivation of Bacteria with Chloramine | Chloramine | 2 | Bacteria |
| ct_value | ct_chloramine_bacteria_3log | mg·min/L | 220 | 140 | CT value for 3-log inactivation of Bacteria with Chloramine | Chloramine | 3 | Bacteria |
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