| BOD | biochemical oxygen demand |
| COD | chemical oxygen demand |
| CSWW | cattle slaughterhouse wastewater |
| FOG | fats, oils and grease |
| TN | total nitrogen |
| TSS | total suspended solid |
| VSS | volatile suspended solids |
| UASB | upflow anaerobic sludge blanket |
| VSS | volatile suspended solid |
| IA | partial alkalinity |
| TA | total alkalinity |
| SMP | specific methane production |
| UASB | upflow anaerobic sludge blanket |
| HRT | hydraulic retention time |
| OLR | organic loading rate |