| Acronym | Meaning |
| WWT | Wastewater Treatment |
| EROD | Ethoxyresorufin-O-deethylase (REG 59793-97-4) |
| VSEPR | Valence-shell Electron-pair Repulsion |
| PCA | Principal Component Analysis |
| SXAPS | Soft X-ray Appearance Potential Spectroscopy |
| GEOS | General Earthquake Observation System |
| SW X(ALPHA) | Scattered Wave X(alpha) |
| BOM | Biodegradable Organic Matter |
| SCP | Single-cell Protein |
| OMNMHCE | Organic Material Nonmethane Hydrocarbon Equivalent |