| AB | Acrylonitrile Butadiene Styrene |
| A2/O | Anaerobic-Anoxic-Oxic |
| CASS | Cyclic Activated Sludge System |
| COD | Chemical oxygen demand |
| HRT | Hydraulic retention time |
| MPs | Microplastics |
| PA | Polyamide |
| PB | Polybutylene |
| PCL | Polycaprolactone |
| PE | Polyethylene |
| PET | Polyethylene terephthalate |
| PP | Polypropylene |
| PS | Polystyrene |
| PSF | Polysulfone |
| PTFE | Polytetrafluoroethylene |
| PVA | Polyvinyl Alcohol |
| PVC | Polyvinyl chloride |
| SAN | Styrene Acrylonitrile resin |
| SBR | Sequencing Batch Reactor |
| TN | Total nitrogen |
| TP | Total phosphorus |
| WWTPs | Wastewater treatment plants |
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