Optimized Constructed Wetlands
Optimized Constructed Wetlands (OCW) will be optimized by separation into compartments by subsurface ridges with intense vegetation, in order to slow down water velocity and to increase retention and sedimentation. The ridges with vegetation slow down the water movements and thus increase sedimentation and denitrification. They are also shallow, further enhancing sedimentation due to shorter sedimentation distances. Furthermore, they will be fitted with outlets to adjust the water level which will improve conditions for management actions.
Photo : This wetland constructed in Denmark is divided in 3 sections in order to optimize nutrient reduction.