Effects Of Typical Endocrine Disruptor BPA And 2,4-diclorophenol In Artificial Wetland

BPA and 2, 4- DCP widely exists in the urban sewage treatment plant of tail water. Artificial wetland in sewage treatment plant of tail water depth purification landscape reuse has been frequentlyused.Itis one of the focus areas of today’s environment.The research on EDCs on the artificial wetland system is still in its infancy.In this study, in order to grasp the typical response mechanism EDCs,we add BPA and 2,4-DCP in the simulation of artificial wetland system,and study the effects of conventional pollutants and purifying influence wetland system for wetland microbial,andprovides a scientific basis and stable operation for EDCs interferencewetland system.This study use conventional pollutants detectionanalysis methodand quinone fingerprint technology in order to explore the artificial wetlands under EDCs interference from the micro level and the apparent level Interference.Studies show that the number and diversity of microbial subsurface flow wetland system(TQ:5.568 DQ:13.37) are greater than the table flow wetland system(TQ:3.932 DQ:13.37).The resistance ofsubsurface flow wetland system is improved.Table flow constructed wetlands with 2,4-DCP in the removal of COD and TN were reduced by 16.6% and 10.22%.The subsurface flow wetland system is only reduced by 11.5% and 3.58%.The removal of COD of the subsurface flow constructed wetland system with BPA were reduced by 8.61%.The inhibition of this system is mainly concentrated in the upper layer.Theupper inhibition rate is 27.3%.In comparison.The inhibition of 2,4-DCP is mainly concentrated in the lower layer.2,4-DCP affect the whole system.BPA greater impact on the denitrifying bacteria flora.The degree of influence is significantly higher than 2,4-DCPwhich led to the removal of TN.The TN removal efficiency of the constructed wetland system with BPA decreased 6.19% and the TN removal efficiency of the constructed wetland system with 2,4-DCP decreased 3.58%.