Stormwater chemical Best Management Practices

Iron enhanced sand filter basin, Maplewood, MN. Photo courtesy of Barr Engineering.

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.

Links to pages specifically discussing chemical treatment BMPs

• Iron enhanced sand filter (Minnesota Filter) (+)
• Chemical treatment

Other pages that include information on chemical treatment

• Bioretention filter media. This section on the Design criteria for bioretention page provides a discussion on phosphorus management with bioretention media, including a discussion of iron enhanced technologies.
• Soil amendments to enhance phosphorus sorption.