This course will provide a good baseline about what key elements go into planning and design of a constructed wetland system for use in treating wastewater. Constructed wetlands function as natural wastewater treatment systems. They are subsurface or surface wetlands, which are an engineered sequence of water bodies designed to filter and treat pollutants found in storm water runoff or effluent.
Wastewater contaminants are treated using physical, chemical, and biological processes. Constructed wetlands are designed using flow beds to support wetland plant growth. Constructed wetlands can be designed for projects large or small, including single family homes, schools and entire villages.
This class will discuss the different types and uses of constructed wetlands. Surface or subsurface flow can be used; layout designs can include one or more cells. Some constructed wetland systems are more applicable for uses such as treating wastewater from farm applications. Constructed wetland systems can be modified to include a filter bed or strip, septic tanks, and a distribution method (such as an organic matter bed).
In this course, we will discuss typical site specific requirements. We will cover the planning, permitting, plant selection and design elements of several actual sites in Southeastern Wisconsin where systems were installed. The course will include a class trip (Day 2) to visit several systems to discuss the practical aspects of layout, design, dealing with surprises, and typical management and maintenance considerations.
This two-day course will cover:
• When and why a constructed wetland is the right choice.
• How to plan for a constructed wetland project.
• Water: depth, duration and timing
• The basics of plant selection for constructed wetland
• How to select and order plants and seed ideal for a constructed wetland project.
• Proper planting and maintenance techniques.
Who should attend?
• Engineers and technical professionals involved in design of sustainable wastewater and stormwater treatment systems.
• Landscape designers who would like to learn more about plant selection and identification for constructed wetlands, buffers, stormwater ponds, etc.
• Planners or designers with an interest in future onsite wastewater treatment for small communities