Table 1 Effect of dissolved oxygen experiment
Case | Experiment conditions (nitrogen blowing) (min) | CFe(II) (mg/L) | CCr(VI) (mg/L) | DO (mg/L) |
|---|---|---|---|---|
1 | 0 | 20 | 20 | Hyperoxia (5.95) |
2 | 15 | 20 | 20 | Hypoxia (3.98) |
3 | 30 | 20 | 20 | Hypoxia (2.21) |
4 | 60 | 20 | 20 | Hypoxia (1.20) |
5 | 120 | 20 | 20 | Anoxic (0.11) |