| Pond forebay | Wet detention pond | Stormwater wetland | Dry pond | ||
|---|---|---|---|---|---|
| Pretreatment | X | ||||
| HYDRAULIC PROCESSES | Attenuation | X | X | X | |
| Infiltration / Runoff reduction | |||||
| Evaporation | |||||
| Transpiration | |||||
| PHYSICAL PROCESSES | Screening | ||||
| Sedimentation | X | X | X | X | |
| Filtration | |||||
| Flotation / Skimming | X | X | |||
| Laminar Separation | |||||
| Swirl concentration | |||||
| BIOLOGICAL PROCESSES | Plant metabolism | X | |||
| Pathogen die-off | X | X | |||
| Nitrification / denitrification | X | X | |||
| CHEMICAL PROCESSES | Precipitation | X | X | ||
| Coagulation | X | X | |||
| Sorption/Ion Exchange | X | ||||
| OTHER | Thermal / temperature |