Parameters | Reactors with different mixing ratios | ||||
---|---|---|---|---|---|
HR1 | HR2 | HR3 | HR4 | HR5 | |
Acidogenic reactor (HR) | |||||
pH | 7.47±.09 | 6.82±.47 | 6.41 ± .25 | 6.32 ± .16 | 6.00 ± .3 |
ORP (mv) | − 24.88 ± 4.85 | 11.00 ± 26.38 | 34.13 ± 14.55 | 39.00 ± 9.06 | 57.13 ± 16.88 |
TS (%) | .73 ± .41 | .96 ± .11 | 1.35 ± .44 | 2.13 ± 1.91 | 1.53 ± .23 |
VS (%) | 70.71 ± 3.58 | 64.14 ± 2.47 | 64.50 ± 14.47 | 57.25 ± 1.48 | 48.75 ± 10.29 |
NH3 (mg/l) | 1726.25 ± 139.99 | 1432.50 ± 185.76 | 1273.75 ± 316.45 | 866.25 ± 301.99 | 488.75 ± 155.97 |
TALK (g CaCO3/l) | 7.95 ± 2.47 | 6.82 ± 2.36 | 6.45 ± 1.77 | 5.90 ± 1.37 | 5.39 ± .95 |
TCOD (mg/l) | 9986.25 ± 1071.63 | 10,222.5 ± 912.07 | 10,175.0 ± 1059.3 | 10,622.5 ± 1103.28 | 10,791.25 ± 1033.81 |
VFA (g/L) | 38.71 ± 9.88 | 44.45 ± 10.72 | 44.53 ± 9.31 | 43.55 ± 7.98 | 36.94 ± 12.43 |
MR1 | MR2 | MR3 | MR4 | MR5 | |
Methanogenic reactor (MR) | |||||
pH | 8.02 ± .076 | 8.07 ± .06 | 7.98 ± .08 | 8.06 ± .11 | 7.99 ± .07 |
ORP (mv) | − 54.75 ± 4.062 | − 57.13 ± 3.09 | − 52.75 ± 4.80 | − 56.88 ± 6.06 | − 53.63 ± 3.89 |
TS (%) | .54 ± .17 | .63 ± .08 | 1.12 ± 1.20 | .78 ± .14 | 1.13 ± .16 |
VS (%) | 70.27 ± 12.51 | 53.21 ± 3.39 | 36.97 ± 13.65 | 34.92 ± 3.02 | 39.13 ± 11.26 |
NH3 (mg/l) | 1492.50 ± 175.15 | 1212.50 ± 131.99 | 901.25 ± 108.69 | 691.25 ± 129.88 | 402.50 ± 62.51 |
TALK (g CaCO3/l) | 8.61 ± 2.68 | 8.77 ± 2.47 | 8.57 ± 2.53 | 8.34 ± 2.764 | 7.94 ± 2.65 |
CH4 (%) | 56.64 ± 1.89 | 47.16 ± 3.12 | 59.95 ± 3.66 | 28.63 ± 3.76 | 31.81 ± 2.87 |
Biogas (ml/day) | 243.75 ± 35.03 | 342.50 ± 65.63 | 590.00 ± 49.86 | 331.25 ± 37.20 | 188.75 ± 45.18 |
CH4 (ml/day) | 138.34 ± 22.41 | 162.98 ± 39.46 | 353.86 ± 38.46 | 94.16 ± 11.94 | 59.16 ± 10.94 |
TCOD (mg/l) | 7212.50 ± 2028.19 | 6067.50 ± 2145.61 | 5730.00 ± 3070.31 | 3867.50 ± 2625.05 | 4227.50 ± 3373.28 |
TVFA (g CH3COOH/l) | 10.95 ± 6.41 | 11.47 ± 3.27 | 5.80 ± 1.37 | 4.91 ± 0.43 | 4.16 ± 0.96 |
VS removed (%) | 44.7 | 53.37 | 70.23 | 63.84 | 59.84 |
SMY (mlCH4/g VS add) | 20.30 | 22.84 | 36.53 | 9.00 | 5.37 |
BY (ml Biogas/g VS add) | 35.77 | 48.00 | 60.90 | 31.65 | 17.13 |