Table 1.
Summary of sampled facilities.
| Facility | Facility type | Digester type | Separator type | Feedstock | No. of animals |
|---|---|---|---|---|---|
| 1 | Dairy farm | Plug flow | Screw press | Dairy manure | 4600 |
| 2 | Dairy farm | None, separator only | Screw press | Dairy manure | 700 |
| 3 | Dairy farm | Complete mix | Screw press with blower | Dairy manure | 1400 |
| 4 | Dairy farm | Plug flow | Screw press | Dairy manure | 2600 |
| 5 | Abattoir | Plug flow | Screw press | Paunch manure, feed wastes | 2100, processed daily |
| 6 | Dairy farm | Plug flow | Screw press | Dairy manure | 2600 |
| 7 | Dairy farm | Plug flow | Screw press | Dairy manure | 1400 |
| 8 | Community digester serving three dairy farms | Complete mix | Centrifuge | Dairy manure, ethanol byproduct, miscellaneous | Not available |
| 9 | Dairy farm | None, separator only | Screw press | Dairy manure | 1200 |