Table 4.
Removal rate of pollutants by different plant species after 46 days of treatment (mean ± standard error, n = 3).
| Plants | Plant Removal Rate of Total Phosphorus | Plant Removal Rate of Total Nitrogen | ||
|---|---|---|---|---|
| Artificial Domestic Wastewater | Artificial Animal Farm Wastewater | Artificial Domestic Wastewater | Artificial Animal Farm Wastewater | |
| Eleocharis plantagineiformis | 21.2% e | 6.7% ab | 20.3% a | 5.0% ab |
| Hydrocotyle vulgaris | 84.4% ab | 8.3% ab | 6.9% b | - |
| Ipomoea aquatica | 90.6% a | 8.8% bc | 8.7% b | 0.6% de |
| Salvinia natans | 67.3% d | 14.2% bc | 14.1% b | 2.2% c |
| S. natans–E. plantagineiformis | 79.0% bc | 7.3% a | 15.7% b | 5.9% a |
| H. vulgaris–E. plantagineiformis | 82.8% abc | 6.7% ab | 13.6% b | 0.9% d |
| I. aquatica–E. plantagineiformis | 74.1% cd | 20.1% bc | 7.0% c | 1.6% cd |
| Salvinia natans–E. plantagineiformis–H. vulgaris | 88.4% ab | 33.7% a | 5.9% c | 4.0% b |
Values among the plant species having the same letter are not significantly different (p = 0.05).