Table 1 The L9(34) orthogonal test and result.
Serial number | Rhodopseudomonas A/% | Lignite content B/% | SRB C/% | Particle size of lignite D/mesh | SO42− Test result | Cu2+ Test result | Zn2+ Test result | pH Test result | COD Test result | ORP Test result |
|---|---|---|---|---|---|---|---|---|---|---|
1 | 10 | 3 | 10 | 80 | 80.96 | 99.18 | 96.77 | 7.13 | 499 | − 134 |
2 | 10 | 5 | 30 | 100 | 77.70 | 99.93 | 95.58 | 7.28 | 482 | − 129 |
3 | 10 | 7 | 50 | 200 | 82.28 | 99.18 | 99.59 | 7.42 | 516 | − 123 |
4 | 30 | 3 | 30 | 200 | 75.17 | 98.81 | 98.28 | 7.31 | 511 | − 119 |
5 | 30 | 5 | 50 | 80 | 71.77 | 96.57 | 95.66 | 7.23 | 479 | − 124 |
6 | 30 | 7 | 10 | 100 | 72.21 | 95.59 | 96.58 | 7.23 | 485 | − 120 |
7 | 50 | 3 | 50 | 100 | 81.49 | 93.05 | 94.67 | 7.43 | 516 | − 119 |
8 | 50 | 5 | 10 | 200 | 83.21 | 95.59 | 97.12 | 7.35 | 521 | − 114 |
9 | 50 | 7 | 30 | 80 | 75.21 | 94.74 | 95.00 | 7.36 | 523 | − 116 |
