Controlling the flow allows natural processes to occur and clean the wastewater more efficiently. Constructed wetlands provide simple and effective wastewater treatment. They can be used to treat domestic, agricultural, industrial and mining wastewaters. Constructed wetlands are also pleasant to look at, attract desired wildlife, and provide environmental education opportunities. Wastewater flows through a pipe from a septic tank or other type of primary wastewater treatment system into the constructed wetland.
Flow is distributed evenly across the width of the wetland cell.
A waterproof liner is used on the sides and bottom of the cell to prevent leaks and assure adequate water for the wetland plants. This cell is planted with wetland plants such as cattails and bulrushes. Roots and stems of the plants form a dense mat. Here chemical, biological, and physical processes occur to treat the wastewater. Water levels are con trolled in both surface and subsurface systems.