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| Removal efficiency, % | |
| OTC, 20 mg/L (control) | 80.7±0.9 |
| Ca2+, 150 mg/L | 80.5±0.2 |
| Ca2+, 50 mg/L | 81.3±0.4 |
| Mg2+, 50 mg/L | 80.4±0.1 |
| Mg2+, 8 mg/L | 80.8±0.8 |
| DOM, 10 mg/L | 80.7±1.0 |
