Table 11 . Classifications of broad treatment pathways in wastewater treatment.
| Process type | Examples | Resource recovery |
|---|---|---|
| Biological | Anaerobic digestion | Biogas |
| Decoupled HRT and SRT | Digestate/Biosolids/liquid fraction | |
| UASB | Biofuel production | |
| Wet and dry composting | Compost fertilizer | |
| Thermal processes | Pyrolysis/gasification | Energy/Char |
| Incineration | Energy/Ash | |
| Separation | Biofiltration | Pathogen free water |
| Membrane pervaporation | Pyrolysis | |
| Chemical processes | Electrochemical disinfection | Pathogen free products |
| Ammonia disinfection | NPK irrigation water/fertilizer | |
| Struvite | Phosphorus | |
| Ammonia stripping | Fertilizer |