TABLE 2.
Dark inactivation parameters for WSP effluent and raw sewage in fresh (river) watera
| Indicator | Effluent | kD (h−1) (n; CV%)b | T90 (h) |
|---|---|---|---|
| Fecal coliforms | WSP | 0.0162 (60; 14) | 144 |
| RS | 0.007 (17; 18) | 329 | |
| E. coli | WSP | 0.0171 (59; 18) | 135 |
| RS | 0.023 (17; 10) | 100 | |
| Enterococci | WSP | 0.0168 (60; 26) | 135 |
| RS | 0.012 (17; 18) | 192 | |
| Somatic coliphages | WSP | 0.008 (60; 26) | 288 |
| RS | 0.001 (17; 17) | 2,303 | |
| F-RNA phages | WSP | 0.014 (43; 12) | 165 |
| RS | ≈0 (17) | -c |
a
The kD values were calculated from the combined percent survival plots loge for all available experiments and are presented at up to 4 decimal places for comparison of the small differences. No dark controls were possible in experiments 5 and 7.
b
For each kD value, the number of samples (n) and the coefficient of variation (CV%) are given in parentheses as indicated.
c
Not calculated (near zero inactivation).