| ASP | Activated Sludge Process |
| COD | Chemical Oxygen Demand |
| DO | Dissolved Oxygen |
| EPS | Extracellular Polymeric Substances |
| F/M | Food to Microorganisms |
| FI | Filament Index |
| MBR | Membrane Bio-Reactor |
| MLSS | Mixed Liquor Suspended Solids |
| Qin | influent rate |
| Qout | filtration rate |
| Qr | recirculation rate |
| SCADA | Supervisory Control and Data Acquisition |
| SMP | Soluble Microbial Products |
| SMPc | carbohydrate fraction of SMP |
| SMPp | protein fraction of SMP |
| SRT | Solids Retention Time |
| TMP | Trans-Membrane Pressure |
| TN | Total Nitrogen |
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