Application of Combined Artificial Wetland Technology in Deep Purification of Wastewater Treatment Plant Tailwater
To solve the current problems of organic pollutants,nitrogen,and phosphorus in tail water from the Dafeng Sewage Treatment Plant in Yancheng City,the combined wetland technology of"enhanced purification wetland+deep conservation lake"was adopted to deeply purify the tail water of the sewage treatment plant.The results showed that the combined constructed wetland system had a good effect on the deeply purification of the tail water of the sewage treatment plant,and the average removal rates of COD,NH3-N,TN and TP were 76.01%,54.83%,63.46%and 40.72%,respectively.During the operation period of the system,the effluent basically reached the Class III standard of the Surface Water Environmental Quality Standard(GB 3838-2002).
tail water of sewage treatment plantcombined constructed wetland technologydeep conservation lakesenhanced purification wetland
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