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

Revision as of 18:03, 14 March 2018

Stormwater filtration BMPs - treatment properties
Link to this table

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			TSS: High TN: Medium/High TP: Medium/High 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.

@@ Line 61: / Line 61: @@
 :TSS: High
 :TN: Low/Medium
-:TP: Medium/High
+:TP: Medium/High<sup>2</sup>
 :Chloride: Low
 :Metals: High
@@ Line 130: / Line 130: @@
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-<font size=1><sup>1</sup><sup>2</sup> Low = < 30%; Medium = 30‐65%; High = 65‐100%</font size>
+<font size=1><sup>1</sup><sup>2</sup> Low = < 30%; Medium = 30‐65%; High = 65‐100%<br>
+<sup>2</sup>Some media mixes can [https://stormwater.pca.state.mn.us/index.php?title=Design_criteria_for_bioretention#Addressing_phosphorus_leaching_concerns_with_media_mixes leach phosphorus].</font size>
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