Advanced Stormwater Treatment:
Presenter: Andrew J. Erickson, M.S., P.E.,
St. Anthony Falls laboratory, University of Minnesota.
On-Demand Webcast, 1hr*
Credits: 1 PDH / 0.1 CEUs
How effective are your stormwater treatments in capturing dissolved loads? With an average of 45% of the phosphorus load and up to 50% of the metal load transported through treatment practices to receiving waters in dissolved form, advanced treatment is imperative. Join Andrew Erickson to explore cost-effective, field-tested methods to capture stormwater dissolved pollutants and optimize stormwater treatment performance. We’ll explore several field applications and data demonstrating significant improvements in dissolved pollutant fraction capture.
Stormwater treatment practices are designed to remove pollutants from stormwater, but many practices only remove a fraction of the pollutant load. On average, 45% of the phosphorus load and up to 50% of the metal (cadmium, copper, zinc) load is present in stormwater in dissolved form. Physical treatment processes such as sedimentation and filtration only capture the particulate forms; the dissolved fraction is often transported through the practice untreated to downstream receiving waters. Dissolved nutrients have a higher bioavailability factor than particulate forms, and metals in the dissolved form are more readily absorbed by aquatic species. Therefore, removing particulate fractions from stormwater only minimally reduces the bioavailability and toxicity of pollutants in stormwater delivered to downstream water bodies.
Advanced treatment is required to capture the dissolved pollutant fraction. Fortunately, recent developments in research have yielded modifications and enhancements to existing treatment practices for capturing dissolved pollutants. Join Erickson to explore the processes used to capture dissolved pollutants and how stormwater treatment practices can be designed to optimize these processes. This Webcast will examine several field applications that have incorporated these enhancements or modifications, and data from these installations demonstrates how these practices significantly capture the dissolved pollutant fraction.
Webcast attendees can expect the discussion and education of the following learning objectives.
- Understanding of methods and applications to effectively capture stormwater dissolved pollutants and optimize stormwater treatment performance
- Understanding that the dissolved fraction of stormwater pollutants is significant
- Understanding that chemical and biological processes can be incorporated into stormwater treatment practices specifically to capture dissolved pollutants
- Understanding that data from field installations of enhanced treatment practices show that dissolved pollutant fractions can be significantly removed from stormwater
- Understanding that the sustainability of dissolved pollutant capture can be the same or better than particulate removal
* Webcast presentations are scheduled for approximately one hour. Webcast may exceed scheduled time.
*Each state and certification agency has different requirements; it is your responsibility to know what they are.
Note that 1 PDH = 0.1 CEU.