Table 2.
Temperature and Pressure of Ambient Air, DFC and Sewage Surface during Sampling.
| Sampling date and points | Temperature (°C) | Ambient pressure(mmHg) | ||||
|---|---|---|---|---|---|---|
| Date(season) | Sampling Points | Ambient | DFC | Sewage | ||
| Summer | A.M | Primary settling basin | 31.5 | 29.3 | 22.0 | 751.5 |
| Aeration basin | 31.0 | 26.8 | 27.9 | |||
| Final settling basin | 29.5 | 27.9 | 23.0 | |||
| P.M | Primary settling basin | 31.9 | 30.4 | 22.9 | ||
| Aeration basin | 32.4 | 28.6 | 26.1 | |||
| Final settling basin | 31.4 | 32.1 | 23.5 | |||
| Winter | A.M | Primary settling basin | 11.2 | 12.6 | 14.1 | 756.5 |
| Aeration basin | 9.8 | 16.4 | 11.6 | |||
| Final settling basin | 10.1 | 12.9 | 13.2 | |||
| P.M | Primary settling basin | 9.1 | 18.2 | 14.0 | ||
| Aeration basin | 10.6 | 11.7 | 13.0 | |||
| Final settling basin | 10.5 | 14.6 | 12.7 | |||
| Winter | A.M | Primary settling basin | 9.5 | 9.5 | 12.2 | 754.6 |
| Aeration basin | 7.8 | 8.9 | 11.5 | |||
| Final settling basin | 8.4 | 14.7 | 11.7 | |||
| P.M | Primary settling basin | 9.4 | 23.3 | 12.1 | ||
| Aeration basin | 9.2 | 18.7 | 11.7 | |||
| Final settling basin | 9.4 | 20.4 | 11.4 | |||