The Florida Department of Environmental Protection has accepted the Downstream Defender®hydrodynamic separator to remove nutrients and sediment from stormwater runoff.

Field testing for Downstream Defender® has shown 22% removal of nutrient-carrying sediments compared to the standard allowance of 10% for a generic hydrodynamic separator.

Engineers who specify stormwater treatment systems can enter the below data into BMPTrains to use Downstream Defender® on their next stormwater treatment project. 

Total Phosphorus

• 22%
• 1.67 lbs/acre feet

Total Nitrogen

• 22%
• 2.73 lbs/acre feet