Study on constructed wetland of Buji Sewage Plant in Shenzhen

In order to improve the water quality of the Buji River in Shenzhen, and on the basis of earlier larger-scale experiments at the Buji Sewage Plant,a small-scale constructed wetland was constructed for advanced treatment of secondary effluent from the sewage plant.The improvement after advanced treatment of the secondary effluent by a constructed wetland was studied,providing a reference for whether the construction of a wetland should be planned after the construction of the Buji Sewage Plant is completed.The experimental results indicated that the constructed wetland had a quite significant advanced treatment effect on important water quality indexes such as COD,NH+4-N,TN,and TP of secondary effluent.The treatment effect was generally better in the summer than in the autumn and winter.The seasonal variation affected the removal rate of TN more significantly than that of COD,NH+4-N,and TP.