Difference between revisions of "Stormwater filtration BMPs - treatment properties"
Stormwater filtration BMPs - treatment properties

Revision as of 18:34, 14 March 2018

Stormwater filtration BMPs - treatment properties
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Stormwater BMP	Pollutant Removal Mechanism	Location in Treatment Train	Pollutant Removal ¹	Potential Application
Dry swale or step pool	Sedimentation / Infiltration	Throughout	TSS: Medium TN: Low TP: Medium Chloride: Low Metals: Medium Oils and Grease: Low Pathogens: Low	Residential Commercial Industrial Highway/Road Recreational
Wet swale	Sedimentation / Transpiration	Throughout	TSS: Medium TN: Low TP: Low Chloride: Low Metals: Low Oils and Grease: Low Pathogens: Low	Residential Commercial Industrial Highway/Road Recreation
Biofiltration Basin	Sedimentation / Filtration	Beginning	TSS: High TN: Low/Medium TP: Medium/High² Chloride: Low Metals: High Oils and Grease: High	Residential: Yes Commercial: Yes Retrofit: Yes
Permeable pavement with underdrain	Filtration	Beginning	TSS: High TN: Medium/High TP: Medium/High Chloride: Low Metals: High Oils and Grease: High	Residential: Yes Commercial: Yes Ultra Urban: Yes Retrofit: Yes
Tree Trench/Tree Box (with underdrain)	Filtration, Transpiration	Throughout	TSS: High TN: Medium/High TP: Medium/High Chloride: Low Metals: High Oils and Grease: High Pathogens: High	Commercial: Yes Ultra Urban: Yes Retrofit: Yes
Green roof	Filtration	Throughout	TSS: High TN: Low TP: Low Chloride: Low Metals: High Oils and Grease: High Pathogens: High	Residential Commercial Ultra Urban Industrial Retrofit

¹² Low = < 30%; Medium = 30‐65%; High = 65‐100%
²Some media mixes can leach phosphorus.

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 <font size=1><sup>1</sup><sup>2</sup> Low = < 30%; Medium = 30‐65%; High = 65‐100%<br>