Field Studies on the Treatment Capacity of the Stormwater Wetland

Integrated wetlands combined with emerged macrophytes and hydrophytes provided an innovative option for treating storm water. The study evaluated the removal effect of nitrogen (ammonia, nitrate, nitrite, total phosphorus) and phosphorus (total phosphorus) for storm water in riparian wetland. The 15 month monitoring campaign investigated that most of the effluent nutrients (except nitrite) concentrations were significantly less than inlet concentrations. The nitrogen removal fluctuated widely over time, and the removal rates were associated with the cultivation of biofilm and reeds. Furthermore, the study also demonstrated that the removal efficiencies of nitrogen and phosphorus were not closely related to the rainfall duration.