| Dry swale | Filter strip / grass buffer | Grass channel | Level spreader | Wet swale | ||
|---|---|---|---|---|---|---|
| Pretreatment | X | X | ||||
| HYDRAULIC PROCESSES | Attenuation | X | X | X | ||
| Infiltration / Runoff reduction | ||||||
| Evaporation | X | |||||
| Transpiration | X | |||||
| PHYSICAL PROCESSES | Screening | X | ||||
| Sedimentation | X | X | X | |||
| Filtration | X | X | X | X | ||
| Flotation / Skimming | X | |||||
| Laminar Separation | ||||||
| Swirl concentration | ||||||
| BIOLOGICAL PROCESSES | Plant metabolism | X | ||||
| Pathogen die-off | X | X | X | X | ||
| Nitrification / denitrification | ||||||
| CHEMICAL PROCESSES | Precipitation | |||||
| Coagulation | ||||||
| Sorption/Ion Exchange | X | |||||
| OTHER | Thermal / temperature | X | X | X | X |