Sometimes Passive/Semi-Passive stormwater treatment systems utilizing polyacrylamide (PAM) fail to achieve their intended function of reducing turbidity in construction stormwater. It is necessary to understand the fundamentals for effectively flocculating suspended solids in order to troubleshoot the system or design. We will review the criteria required to promote and create effective flocculation in passive treatment systems to reduce turbidity through the lens of a local Virginia project highlighting the challenges and solutions employed to achieve success.
Learning Objectives:
At the conclusion of this presentation, attendees will:
List the five fundamentals necessary to achieve effective flocculation and water clarification on construction projects.
Describe how each of the fundamentals fits into the overall design of a passive treatment system.
Conduct inspections and suggest modifications to passive treatment systems to achieve effective floccuation and water clarification.
.jpg)
.png)
