Table 2 Pre-treatment conditions applied in this study.
Reactor No. | Pre-treatment | FNA (mg N/L) | H2O2 concentration (mg/g TS) | NO2−-N (mg N/L) | pH |
|---|---|---|---|---|---|
1 | Control | 0 | 0 | 0 | 6.4–6.9 |
FNA pre-treatment | |||||
2 | FNA | 1.54 | 0 | 200 | 5.5 ± 0.2 |
H2O2 pre-treatment | |||||
3 | HP1 | 0 | 10 | 0 | 6.4–6.9 |
4 | HP2 | 0 | 30 | 0 | 6.4–6.9 |
5 | HP3 | 0 | 50 | 0 | 6.4–6.9 |
6 | HP4 | 0 | 80 | 0 | 6.4–6.9 |
Combined FNA and H2O2 pre-treatment | |||||
7 | FNA + HP1 | 1.54 | 10 | 200 | 5.5 ± 0.2 |
8 | FNA + HP2 | 1.54 | 30 | 200 | 5.5 ± 0.2 |
9 | FNA + HP3 | 1.54 | 50 | 200 | 5.5 ± 0.2 |
10 | FNA + HP4 | 1.54 | 80 | 200 | 5.5 ± 0.2 |
