Treatment Wetlands
Overview How Treatment Wetlands Work
Effectiveness and Problems Glossary, Links, and References

What are the Treatment Wetlands?

The Treatment Wetlands (Figure 1) are fully overgrown marsh cells consisting of mainly Cattails and Hardstem Bulrush. The dense canopy and biological processes aid in the overall treatment of the water flowing in from the oxidation ponds. The system requires a lower capital investment, energy demands, and labor requirements compared to other wastewater treatment processes (Gearheart, Wilbur, Williams, Hull, 1982).

Arcata's Treatment Wetlands

Figure 1. Arcata's Treatment Wetlands

What is the purpose of the Treatment Marsh?

A number of biological and physical processes contribute to how the Treatment Wetlands work.