May | June | July | August | |
---|---|---|---|---|
pH | 7.62 | 7.39 | 8.15 | 8.06 |
COD | 615 | 1597 | 750 | 667 |
TSS | 30 | 140 | 150 | 65 |
total-P | 97 | 100 | 61 | 75 |
dissolved-P | 68 | 56 | 58 | 36 |
N(NH4-NH3+) | 683 | 622 | 930 | 872 |
organic-N | 8 | 8 | 53 | 67 |
nitrite-N | 0.010 | 0.036 | 0.041 | 0.023 |
nitrate-N | 6.200 | 1.300 | 0.152 | 0.274 |
Ca | 127 | 187 | 117 | 101 |
Mg | 38 | 59 | 17 | 33 |
Cu | 0.01 | 0.05 | 0.01 | 0.02 |
Cd | 0.003 | 0.001 | 0.001 | 0.001 |
Ni | 0.007 | 0.05 | 0.019 | 0.002 |
Pb | 0.012 | 0.017 | 0.002 | 0.005 |
Mo | 0.05 | 0.05 | 0.05 | 0.05 |
As | 0.01 | 0.01 | 0.016 | 0.01 |
Cr | 0.014 | 0.006 | 0.002 | 0.007 |
Fe | 1.71 | 5.26 | 1.18 | 1.04 |
pH | COD | Filtered COD | TSS | N(NH3- NH4) | NO2- | NO3- | TNK | PO4-P | TP | |
---|---|---|---|---|---|---|---|---|---|---|
Incoming raw wastewater | ||||||||||
mean | 7.7 | 575.8 | - | 313.7 | 55.3 | 0.49 | 1.5 | 71.4 | 15 | 10.4 |
error (±2SD) | 0.55 | 427.9 | - | 301.4 | 30.6 | 1 | 3.4 | 33.5 | 11.4 | 7.8 |
AD effluent | ||||||||||
mean | 8.1 | 7572.9 | 675.3 | 7842.4 | 1376.1 | - | - | 1688.9 | 53.2 | 263.5 |
error (±2SD) | 0.3 | 7801.1 | 347 | 8568.9 | 415.3 | - | - | 521.2 | 48.4 | 241.3 |
Legal thresholds | ||||||||||
6.5-9.0 | 125 | 35 | 10 | 35* | 5 |
Thickening table (m3) | Centrifuge (m3) | Press (m3) | Belt press (m3) | Total (m3) | |
---|---|---|---|---|---|
Monthly average volume (m3) | 19 886.61 | 25 965.42 | 3 029.19 | 8 032.57 | 52 381.40 |
error (±2SD) | ±6795.47 | ±9019.76 | ±1665.19 | ±11984.39 | ±9290.88 |
Annual total volume (m3) | 218 752.73 | 285 619.61 | 33 321.04 | 32 130.29 | 576 195.38 |
As μg kg-1 | Cd μg kg-1 | Co μg kg-1 | Cr μg kg-1 | Cu mg kg-1 | Mo μg kg-1 | |
---|---|---|---|---|---|---|
Batch 2 | 2674* | 52.1 | 567 | 4833 | 84.6** | 650* |
Batch 3 | 1848 | 80.8 | 631 | 6072 | 38.5* | 1195** |
Limit | 5000 | 500 | - | 50000 | 50 | 1000 |
Ni μg kg-1 | Pb μg kg-1 | Zn mg kg-1 | F mg kg-1 | Se mg kg-1 | Hg mg kg-1 | |
Batch 2 | 24986* | 2638 | 145* | 56.04* | 1.53** | 1.02** |
Batch 3 | 2166 | 4306 | 255** | 184.4** | 1.02** | 1.02** |
Limit | 25000 | 50000 | 150 | 100 | 0.75 | 0.5 |
Type | Dry matter [tonnes/a] | Organic matter w/w% |
---|---|---|
Concentrated sludge from on-site | 17900 | 73 |
Slaughterhouse waste | 2300 | 83 |
Dewatered sludge from other WWTPs | 1000 | 69 |
External liquid waste | 360 | 75 |
Precipitation | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
Na | B | Mn | TC | Zn | Ca | Cu | TN | TP | Mo | Hg |
1100 | 825 | 649 | 194800 | 142 | 208000 | 60.5 | 27550 | 103877 | 22.5 | 0.5 |
Se | TS | K | Pb | Fe | Mg | As | Co | Ni | Cd | |
9.02 | 3880 | 0.36 | 4.6 | 6.06 | 4830 | 1 | 0.54 | 0.79 | 0.2 |
Month of refilling | Settling time (day) | Recovered clean AD effluent (m3) |
---|---|---|
April | 34 | 3 |
May | 23 | 8 |
June | 27 | 5 |
August | 13 | 7 |
Input in AD effluent | Current nutrient concentrations | In form of microalgae | Loss | |
---|---|---|---|---|
Nitrogen | 100% | 41% | 4% | 55% |
Phosphorus | 100% | 22% | 40% | 38% |