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− | Stormwater Best Management Practices (BMPs) that employ chemical treatment are typically designed for treatment of a specific pollutant. Phosphorus is the most common pollutant of concern. | + | [[File:Sand infiltration 4.jpg|thumb|300px|alt=photo of an iron ehanced sand filter basin|<font size=3>Iron enhanced sand filter basin, Maplewood, MN. Photo courtesy of Barr Engineering.</font size>]] |
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+ | Stormwater Best Management Practices (BMPs) that employ chemical treatment are typically designed for treatment of a specific pollutant. Phosphorus is the most common pollutant of concern, but chemical treatment may also be employed for nitrogen, metals, and organic pollutants. | ||
[[Iron enhanced sand filter (Minnesota Filter)]] ([[Iron enhanced sand filter combined|+]]) | [[Iron enhanced sand filter (Minnesota Filter)]] ([[Iron enhanced sand filter combined|+]]) |
Stormwater Best Management Practices (BMPs) that employ chemical treatment are typically designed for treatment of a specific pollutant. Phosphorus is the most common pollutant of concern, but chemical treatment may also be employed for nitrogen, metals, and organic pollutants.
Iron enhanced sand filter (Minnesota Filter) (+) Chemical treatment