Inventory of treatment and final disposal of sludge and biogas referring to the treatment of 1,000 m3 effluent
| Process . | . | Amount (by Scenario) . | |||
|---|---|---|---|---|---|
| Baseline . | S1 . | S2 . | S3 . | ||
| Dewatering | Input | ||||
| Sludge (kg) | 2,508 | 2,508 | 2,508 | 2,508 | |
| Polymer (0.3%) (kg) | 0.19 | 0.19 | 0.19 | 0.19 | |
| Transport (tkm) | 0.18 | 0.18 | 0.18 | 0.18 | |
| Electricity (kWh) | 6.05 | 6.05 | 6.05 | 6.05 | |
| Sanitization | Dewatered sludge (kg) | 306 | 306 | 306 | 306 |
| Lime (kg) | 33.08 | – | – | – | |
| Energy (biogas) (kWh) | – | 336 | 99.26 | 99.26 | |
| Thermal energy (Sludge) (kWh) | – | – | 221.25 | 221.25 | |
| Electricity (kWh) | – | 38.28 | 38.28 | 38.28 | |
| Transport (lime) tkm | 3.37 | – | – | – | |
| Fuel (L) | 1.12 | – | – | – | |
| Output | |||||
| Water (kg) | 133.70 | 229.85 | 233.49 | 233.49 | |
| NH3 (kg) | 1.16 | – | – | – | |
| CO2 (kg) | 1.88 | – | – | – | |
| CO (kg) | 3.59 × 10−03 | 1.77 | 0.40 | 0.40 | |
| NOx (kg) | 7.78 × 10−03 | 0.03 | 0.28 | 0.28 | |
| SOx (kg) | – | 0.03 | 3.35 | 3.35 | |
| ∑BTEX (kg) | – | 6.15 × 10−03 | 6.15 × 10−03 | ||
| Dioxins (kg) | – | 2.34 × 10−06 | 2.34 × 10−06 | ||
| Particulates (kg) | 7.78 × 10−05 | 0.18 | 0.49 | 0.49 | |
| Effluent (L) | – | 107.63 | 102.51 | 102.51 | |
| Destination | Avoided products | ||||
| Urea (kg) | 1.48 | 0.89 | 2.30 | – | |
| P2O5 (kg) | 0.54 | 0.15 | 0.19 | – | |
| Agricultural lime (kg) | 43.60 | – | – | – | |
| Input | |||||
| Sanitized sludge/ash (kg) | 205.38 | 76.36 | 29.78 | 29.78 | |
| Transport (tkm) | 38.45 | 14.29 | 5.57 | 0.80 | |
| Fuel (L) | 0.08 | 0.03 | 0.01 | – | |
| Output | |||||
| Air | NH3 (kg) | 0.34 | 0.21 | 0.58 | – |
| N2O (kg) | 0.01 | 9.14 × 10−3 | 0.02 | – | |
| NOX (kg) | 3.78 × 10−3 | 2.13 × 10−3 | 4.71 × 10−3 | – | |
| CO (kg) | 2.63 × 10−04 | 9.76 × 10−05 | 3.81 × 10−05 | – | |
| Particulates (kg) | 5.69 × 10−06 | 2.12 × 10−3 | 8.26 × 10−04 | – | |
| Groundwater | NO3 (kg) | 0.05 | 0.02 | 0.07 | – |
| PO4 (kg) | 3.56 × 10−04 | 6.76 × 10−05 | 4.91 × 10−04 | – | |
| Surface water | PO4 (kg) | 2.34 × 10−3 | 5.18 × 10−04 | 1.75 × 10−13 | – |
| Water | Cd (kg) | 1.82 × 10−7 | 0 | 0 | – |
| Cu (kg) | 1.64 × 10−05 | 2.70 × 10−06 | 1.16 × 10−05 | – | |
| Zn (kg) | 1.46 × 10−04 | 2.43 × 10−05 | 7.67 × 10−06 | – | |
| Pb (kg) | 2.36 × 10−06 | 4.32 × 10−07 | 0 | – | |
| Ni (kg) | 0 | 0 | 0 | – | |
| Cr (kg) | 9.47 × 10−05 | 0 | 1.68 × 10−05 | – | |
| Hg (kg) | 5.93 × 10−09 | 0 | 0 | – | |
| Soil | Cd (kg) | 1.60 × 10−06 | 0 | 0 | – |
| Cu (kg) | 1.45 × 10−3 | 4.49 × 10−06 | 1.92 × 10−05 | – | |
| Zn (kg) | 0.011 | 1.09 × 10−05 | 3.43 × 10−06 | – | |
| Pb (kg) | 4.85 × 10−04 | 4.17 × 10−06 | 0 | – | |
| Ni (kg) | 3.54 × 10−04 | 5.11 × 10−06 | 7.67 × 10−06 | – | |
| Cr (kg) | 4.85 × 10−04 | 0 | 5.68 × 10−06 | – | |
| Hg (kg) | 4.19 × 10−05 | 0 | 0 | – | |
| Biogas | Input | ||||
| Biogas (Nm3) | 52.16 | 52.16 | 52.16 | 52.16 | |
| Output | |||||
| CO2 (kg) | 45.91 | 70.84 | 70.84 | 70.84 | |
| H2 (kg) | 0.14 | 0.14 | 0.14 | 0.14 | |
| SO2 (kg) | 0.23 | 0.19 | 0.19 | 0.19 | |
| CH4 (kg) | 12.97 | 3.89 | 3.89 | 3.89 | |
| N2 (kg) | 10.45 | 10.45 | 10.45 | 10.45 | |
| Heat (MJ) | 648.67 | 1,103 | 1,103 | 1,103 | |
| Process . | . | Amount (by Scenario) . | |||
|---|---|---|---|---|---|
| Baseline . | S1 . | S2 . | S3 . | ||
| Dewatering | Input | ||||
| Sludge (kg) | 2,508 | 2,508 | 2,508 | 2,508 | |
| Polymer (0.3%) (kg) | 0.19 | 0.19 | 0.19 | 0.19 | |
| Transport (tkm) | 0.18 | 0.18 | 0.18 | 0.18 | |
| Electricity (kWh) | 6.05 | 6.05 | 6.05 | 6.05 | |
| Sanitization | Dewatered sludge (kg) | 306 | 306 | 306 | 306 |
| Lime (kg) | 33.08 | – | – | – | |
| Energy (biogas) (kWh) | – | 336 | 99.26 | 99.26 | |
| Thermal energy (Sludge) (kWh) | – | – | 221.25 | 221.25 | |
| Electricity (kWh) | – | 38.28 | 38.28 | 38.28 | |
| Transport (lime) tkm | 3.37 | – | – | – | |
| Fuel (L) | 1.12 | – | – | – | |
| Output | |||||
| Water (kg) | 133.70 | 229.85 | 233.49 | 233.49 | |
| NH3 (kg) | 1.16 | – | – | – | |
| CO2 (kg) | 1.88 | – | – | – | |
| CO (kg) | 3.59 × 10−03 | 1.77 | 0.40 | 0.40 | |
| NOx (kg) | 7.78 × 10−03 | 0.03 | 0.28 | 0.28 | |
| SOx (kg) | – | 0.03 | 3.35 | 3.35 | |
| ∑BTEX (kg) | – | 6.15 × 10−03 | 6.15 × 10−03 | ||
| Dioxins (kg) | – | 2.34 × 10−06 | 2.34 × 10−06 | ||
| Particulates (kg) | 7.78 × 10−05 | 0.18 | 0.49 | 0.49 | |
| Effluent (L) | – | 107.63 | 102.51 | 102.51 | |
| Destination | Avoided products | ||||
| Urea (kg) | 1.48 | 0.89 | 2.30 | – | |
| P2O5 (kg) | 0.54 | 0.15 | 0.19 | – | |
| Agricultural lime (kg) | 43.60 | – | – | – | |
| Input | |||||
| Sanitized sludge/ash (kg) | 205.38 | 76.36 | 29.78 | 29.78 | |
| Transport (tkm) | 38.45 | 14.29 | 5.57 | 0.80 | |
| Fuel (L) | 0.08 | 0.03 | 0.01 | – | |
| Output | |||||
| Air | NH3 (kg) | 0.34 | 0.21 | 0.58 | – |
| N2O (kg) | 0.01 | 9.14 × 10−3 | 0.02 | – | |
| NOX (kg) | 3.78 × 10−3 | 2.13 × 10−3 | 4.71 × 10−3 | – | |
| CO (kg) | 2.63 × 10−04 | 9.76 × 10−05 | 3.81 × 10−05 | – | |
| Particulates (kg) | 5.69 × 10−06 | 2.12 × 10−3 | 8.26 × 10−04 | – | |
| Groundwater | NO3 (kg) | 0.05 | 0.02 | 0.07 | – |
| PO4 (kg) | 3.56 × 10−04 | 6.76 × 10−05 | 4.91 × 10−04 | – | |
| Surface water | PO4 (kg) | 2.34 × 10−3 | 5.18 × 10−04 | 1.75 × 10−13 | – |
| Water | Cd (kg) | 1.82 × 10−7 | 0 | 0 | – |
| Cu (kg) | 1.64 × 10−05 | 2.70 × 10−06 | 1.16 × 10−05 | – | |
| Zn (kg) | 1.46 × 10−04 | 2.43 × 10−05 | 7.67 × 10−06 | – | |
| Pb (kg) | 2.36 × 10−06 | 4.32 × 10−07 | 0 | – | |
| Ni (kg) | 0 | 0 | 0 | – | |
| Cr (kg) | 9.47 × 10−05 | 0 | 1.68 × 10−05 | – | |
| Hg (kg) | 5.93 × 10−09 | 0 | 0 | – | |
| Soil | Cd (kg) | 1.60 × 10−06 | 0 | 0 | – |
| Cu (kg) | 1.45 × 10−3 | 4.49 × 10−06 | 1.92 × 10−05 | – | |
| Zn (kg) | 0.011 | 1.09 × 10−05 | 3.43 × 10−06 | – | |
| Pb (kg) | 4.85 × 10−04 | 4.17 × 10−06 | 0 | – | |
| Ni (kg) | 3.54 × 10−04 | 5.11 × 10−06 | 7.67 × 10−06 | – | |
| Cr (kg) | 4.85 × 10−04 | 0 | 5.68 × 10−06 | – | |
| Hg (kg) | 4.19 × 10−05 | 0 | 0 | – | |
| Biogas | Input | ||||
| Biogas (Nm3) | 52.16 | 52.16 | 52.16 | 52.16 | |
| Output | |||||
| CO2 (kg) | 45.91 | 70.84 | 70.84 | 70.84 | |
| H2 (kg) | 0.14 | 0.14 | 0.14 | 0.14 | |
| SO2 (kg) | 0.23 | 0.19 | 0.19 | 0.19 | |
| CH4 (kg) | 12.97 | 3.89 | 3.89 | 3.89 | |
| N2 (kg) | 10.45 | 10.45 | 10.45 | 10.45 | |
| Heat (MJ) | 648.67 | 1,103 | 1,103 | 1,103 | |