Difference between revisions of "Summary of pollutant removal mechanisms"
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| − | <font size=3>'''Summary of attenuation-removal mechanisms for primary pollutants found in stormwater runoff. | + | <font size=3>'''Summary of attenuation-removal mechanisms for primary pollutants found in stormwater runoff. Adapted from [https://lake.wateratlas.usf.edu/upload/documents/Fundamentals%20of%20Urban%20Runoff%20Management%20Technical%20and%20Institutional%20Issues.pdf Fundamentals of Urban Runoff Management: Technical and Institutional Issues, 2nd Ed.]'''</font size><br> |
Link to this [[Summary of pollutant removal mechanisms|table]] | Link to this [[Summary of pollutant removal mechanisms|table]] | ||
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| − | [[Category: | + | [[Category:Level 2 - Pollutants/Pollutant removal]] |
| − | [[ | + | [[Category:Level 3 - General information, reference, tables, images, and archives/Tables/Pollutant removal]] |
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Latest revision as of 18:15, 3 October 2024
Summary of attenuation-removal mechanisms for primary pollutants found in stormwater runoff. Adapted from Fundamentals of Urban Runoff Management: Technical and Institutional Issues, 2nd Ed.
Link to this table
| Mechanism | Pollutants affected | Promoted by |
|---|---|---|
| Sedimentation | Solids, BOD, pathogens, particulate COD, P, N, metals, synthetic organics | Low turbulence |
| Filtration | Solids, BOD, pathogens, particulate COD, P, N, metals, synthetic organics | Fine, dense herbaceous plants, constructed filters |
| Soil incorporation | All | Medium-fine texture |
| Precipitation | Dissolved P, metals | High alkalinity |
| Sorption - adsorption | Dissolved P, metals, synthetic organics | High soil Al, Fe, high soil organics (Met), circumneutral pH |
| Sorption - ion exchange | Dissolved metals | High soil cation exchange capacity |
| Oxidation | COD, petroleum hydrocarbons, synthetic organics | Aerobic conditions |
| Degradation - photolysis | COD, petroleum hydrocarbons, synthetic organics | Direct sunlight |
| Degradation - volatilization | Volatile petroleum hydrocarbons, synthetic organics | High temperature and air movement |
| Degradation - biological | BOD, COD, petroleum hydrocarbons, synthetic organics | High temperature and air movement |
| Plant metabolism | P, N, metals | High plant surface area |
| Pathogen die off | Pathogens | Plant excretions |
| Nitrification | Ammonia | Dissolved oxygen >2 mg/L, low toxicants, temperature >5-7°C, circumneutral pH |
| Denitrification | Nitrate, nitrite | Anaerobic, low toxicants, temperature >15°C |
This page was last edited on 3 October 2024, at 18:15.