Table 1.
Reactor | Temp. (°C) | Substrate (% volume fraction of total substrate) | pH | Free Ammonia (mg NH3‐N l−1) | OLR (kg VS m−3 day−1) | HRT (days) |
---|---|---|---|---|---|---|
CD1 | 38 | Wheat stillage (47%), grain (37%) and water (14%) | 7.5 | 204 | 3.3 | 55 |
CD10 | 38 | OFMSW (77%), fat (12%) and silage (11%) | 7.7 | 162 | 2.2 | 28 |
CD11ap | 38 | SHW in majority | 8.0 | 558 | 3.7 | 55 |
CD11 bp | 38 | SHW in majority | 8.0 | 541 | 3.7 | 55 |
CD2T | 53 | OFMSW (62%), dry fodder (13%) and SHW (9%) | 7.9 | 424 | 2.4 | 25 |
CD3T | 52 | SHW (45%), manure (cow) (29%) and whey (14%)a | 7.9 | 751 | 3.9 | 20 |
CD4ap | 37 | SHW (45%), manure (pig and cow) (32%) and OFMSW (20%)a | 7.7 | 178 | 3.4 | 25 |
CD6ap | 38 | Manure (pig and cow) (67%) and SHW/OFMSW (32%)b | 7.9 | 289 | 3.6 | 26 |
CD6 bp | 38 | Manure (pig and cow) (67%) and SHW/OFMSW (32%)b | 7.9 | 261 | 3.6 | 26 |
CD7a | 37 | OFMSW (57%), FIW (21%) and SHW (12%)2)c | 7.6 | 123 | 2.5 | 35 |
CD7b | 37 | OFMSW (57%), FIW (21%) and SHW (12%)2)c | 7.3 | 49 | 3.6 | 24 |
CD8Tap | 53 | OFMSW (95%) and fat (5%) | 7.7 | 176 | 3.2 | 20 |
CD9T | 55 | OFMSW (85%) and SHW (15%) | 8.2 | 803 | 1.8 | ‐ |
SS1as | 37 | FIW (58%) and PS/WAS (42%) | 7.1 | 13 | 3 | 39 |
SS1bs | 37 | Sludge from SS1as | 7.3 | 20 | 1.1 | 39 |
SS2T | 52 | PS/WAS | 7.5 | 112 | 2.5 | 12 |
SS3a | 37 | PS | 7.1 | 16 | 2.7 | 14 |
SS3b | 37 | PS (54%) and WAS (46%) | 7.2 | 26 | 2.4 | 10 |
SS4ap | 37 | WAS (55%), PS (42%), sludge from external source (3%) | 7.6 | 39 | 2.4 | 18 |
SS5 | 38 | PS | 7.3 | 26 | – | 50 |
FIW, food industry waste; OFMSW, organic fraction municipal solid waste; PS, primary sewage sludge; SHW, slaughterhouse waste; WAS, waste‐activated sludge.
a. 2–6% fat is included in the remaining substrate.
b. 1–1.5% iron‐rich sludge is included in the remaining substrate.
c. 8% pig manure is included in the remaining substrate.