| Acronym | Meaning |
| BAC | Biological Activated Carbon |
| IPA | Independent-pair Approximation |
| PBA | Poly(butyl Acrylate) |
| TNBS | Trinitrobenzene Sulfonic Acid |
| SCCF | Spin-correlated Crystal Field |
| FIDA | Fluorescence Intensity Distribution Analysis |
| SVI | Sludge Volume Index |
| TCA | Total Constituent Analysis |
| CSTBR | Continuous Stirred Tank Bioreactor |
| ARSCFC | Approximate Relativistic SCF (with) Corrections |