The Performance of Constructed Subsurface Flow Wetland For Wastewater Treatment

Constructed wetland systems are a promising wastewater treatment technology. The concept of constructed wetlands for wastewater treatment is still a relatively new idea. The systems are designed to maximize the physical, chemical and biological abilities of natural wetlands to reduce the BOD, TSS, TN, P, and pathogens as wastewater flows slowly through the vegetated subsurface. Precipitation and uptake of metals are also possible. The mechanisms of pollutant removal in SF wetlands include both aerobic and anaerobic microbiological conversions, sorption, sedimentation, volatilization and chemical transformations.