New Retrofit Technologies for Stormwater Treatment Andy Erickson, Research Fellow St. Anthony Falls Laboratory May 18, 2011.

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Presentation transcript:

New Retrofit Technologies for Stormwater Treatment Andy Erickson, Research Fellow St. Anthony Falls Laboratory May 18, 2011

Minnesota Filter Trenches (Prior Lake, MN) Photo Courtesy: A. Erickson

Minnesota Filter Permeable Weir Photo Courtesy: VLAWMO and EOR

Minnesota Filter Ditch Check Dams (under development)

Minnesota Filter Ditch Check Dams (under development) Longitudinal Profile Minnesota Filter Coarse Aggregate Natural Soil

“Minnesota Filter” (e.g., sand with 5% iron filings, Maplewood, MN) Photo Courtesy: A. Erickson

© Finance & Commerce SAFL Baffle

Photo Courtesy: A. Erickson

Conclusions There are technologies available for stormwater retrofits –Minnesota Filter for dissolved pollutants –SAFL Baffle for suspended sediment There are many retrofit opportunities in MN and beyond

Iron Enhanced Sand Filter, Prior Lake, MN (photo courtesy A. Erickson) Questions? For more information, contact: Andy Erickson

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