DESCRIPTION

This module introduces the student to a relatively new technology for use in treating small scale wastewater flows. The capabilities and limitations of two types of constructed wetlands [free water surface (FWS) and vegetated submerged bed (VSB)] are discussed. In spite of the great amount of resources devoted to their proper use, design, application, and performance, there are four common misconceptions regarding these technologies. These misconceptions are discussed in an attempt to put their use into proper perspective.

The history and terminology pertaining to constructed wetlands and large polishing wetlands are covered. The removal mechanisms for pollutants such as biochemical oxygen demand (BOD), total suspended solids (TSS), nitrogen, phosphorous, pathogens, metals and trace organics are outlined. Construction, operation, maintenance, and design considerations are also discussed.

MATERIALS

A. Instructors Guide

Module Perspective (Adobe Acrobat, 63 Kb) (Mar, 2004) Suggested Course Materials (Adobe Acrobat, 175 Kb) (Mar, 2005)

B. Text

Constructed Wetlands Text (Adobe Acrobat, 1.1 MB) (Mar, 2005)

C. Powerpoint Files

Course Overview PowerPoint (Adobe Acrobat, 1.2 MB) (Mar, 2005)

COMMENTS

If you have comments regarding these materials, please send them to Nancy Deal.

Writing Team:

Review Team:

Robert Seabloom Adrian Hanson

Jim Kreissl Richard Otis David Lindbo Scott Wallace Mike Hoover Mark Gross