Research on Domestic Sewage Treatment Technology Experiment of Constructed Wetland

This article establishes constructed wetland domestic sewage research model composed of 10 layers of substrate which focusing on the problem of domestic sewage purification effect with composite medium constructed wetlands, and it conducts the analysis of removal efficiency, influence factor and removal mechanism of COD_cr, NH₃-N, TP, BOD₅and other main indexes, the test shows that the removal rate of each index were above 86%.