Processes utilized by Best Management Practices - Infiltrators. Sources: WEF, 2012; Strecker, 2005.
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Bioinfiltration / rain garden Infiltration basin Infiltration trench Permeable pavement Tree trench / tree box Underground infiltration
Pretreatment
HYDRAULIC PROCESSES Attenuation X X X
Infiltration / Runoff reduction X X X X X X
Evaporation
Transpiration X X X X
PHYSICAL PROCESSES Screening
Sedimentation X X X X
Filtration X X X X X X
Flotation / Skimming
Laminar Separation
Swirl concentration
BIOLOGICAL PROCESSES Plant metabolism X X X X
Pathogen die-off X X X X X
Nitrification / denitrification X X X X
CHEMICAL PROCESSES Precipitation
Coagulation
Sorption/Ion Exchange X X X X X X
OTHER Thermal / temperature X X X X X X