Unit processes of stormwater treatment techniques
Unit processes of stormwater treatment techniques (Adapted from WEF, 2008)
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| Control | Infiltration basin | Infiltration trench | Bioinfiltration | Permeable pavement | Tree box/tree trench | Enhanced turf |
|---|---|---|---|---|---|---|
| Peak flow attenuation | X | |||||
| Runoff volume reduction | ||||||
| Infiltration | X | X | ||||
| Dispersion | X | X | ||||
| Evapotranspiration | ||||||
| Runoff collection and usage | ||||||
| Sedimentation | X | X | X | X | X | |
| Flotation | X | X | X | |||
| Laminar separation | X | |||||
| Swirl concentration | X | |||||
| Sorption | ||||||
| Precipitation | ||||||
| Coagulation | ||||||
| Filtration | X | X | ||||
| Plant metabolism | X | X | ||||
| Nitrification/denitrification | ||||||
| Organic compound degradation | ||||||
| Pathogen die off | ||||||
| Temperature reduction | X | X | ||||
| Disinfection |