NH4+:Mg2+:PO43− molar ratio | pH | NH4+-N (mg/l) | NO3−-N (mg/l) | PO43−-P (mg/l) | N:P mass ratio | Transmittance (%) | Salinity (%) | NH4+-N removal rate (%) |
---|---|---|---|---|---|---|---|---|
1:1:0.95 | 8.0 | 142.52 ± 2.10a | 0.692 ± 0.021a | 35.47 ± 0.48a | 4.12 ± 0.68a | 70.00 ± 0.76a | 0.72 ± 0.21a | 81.18 ± 0.37a |
8.5 | 118.71 ± 0.48b | 0.771 ± 0.049a | 29.87 ± 0.32b | 4.05 ± 0.22a | 71.12 ± 0.66a | 0.69 ± 0.11b | 83.33 ± 0.08b | |
9.0 | 78.06 ± 0.25c | 0.755 ± 0.074a | 26.24 ± 0.70c | 3.06 ± 0.42b | 71.78 ± 0.74a | 0.70 ± 0.01ab | 86.41 ± 0.04c | |
1:1:1 | 8.0 | 90.07 ± 0.08d | 0.030 ± 0.019b | 34.12 ± 0.39d | 2.70 ± 0.73b | 74.65 ± 1.33b | 0.67 ± 0.07b | 85.32 ± 0.01d |
8.5 | 83.78 ± 0.82e | 0.092 ± 0.076b | 22.78 ± 0.51e | 3.75 ± 0.04b | 77.36 ± 1.34b | 0.61 ± 0.08b | 86.41 ± 0.14c | |
9.0 | 66.56 ± 0.52f | 0.063 ± 0.048b | 16.36 ± 0.07f | 4.16 ± 0.23a | 74.82 ± 0.86b | 0.62 ± 0.08b | 88.41 ± 0.09e | |
1:1.2:1.2 | 8.0 | 71.08 ± 1.38 g | 0.053 ± 0.032b | 18.92 ± 1.52 g | 3.86 ± 0.57b | 72.19 ± 1.53a | 0.64 ± 0.03b | 89.62 ± 0.24f |
8.5 | 57.85 ± 0.66 h | 0.046 ± 0.042b | 8.51 ± 0.84 h | 7.04 ± 0.72c | 78.28 ± 0.38bc | 0.66 ± 0.03b | 91.63 ± 0.11 g | |
9.0 | 38.95 ± 0.74i | 0.071 ± 0.016b | 7.02 ± 1.21 h | 5.65 ± 0.43d | 79.60 ± 0.01d | 0.67 ± 0.02b | 93.22 ± 0.13 h |