Occurrence and risk assessment of NP, BPA and TCS in sewage treatment plants

4th International Conference on Water Resource and Environment

地球科学;生态环境科学

Tang, Y.^1 ; Hong, C.Y.^2 ; Zeng, Z.Q.^2 ; Liu, G.Y.^1 ; Xu, Z.C.^2

Guangdong Polytechnic of Environmental Protection Engineering, Foshan

528216, China^1

South China Institute of Environment Sciences, MEP, Guangzhou

510655, China^2

关键词: Activated-sludge treatment process;    Aquatic environments;    Endocrine disrupting compound;    Estrogen activity;    Influent concentrations;    Removal performance;    Sampling campaigns;    Seasonal variation;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/191/1/012027/pdf
DOI  :  10.1088/1755-1315/191/1/012027

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

A long-term investigation, which covered 6 sampling campaigns over one year, was carried out to evaluate the occurrence, removal and risk of nonylphenol (NP), bisphenol A (BPA) and triclosan (TCS) in two full-scale sewage treatment plants (STPs) in Guangdong, South China. The target compounds were detected in every sample. The influent concentrations of NP were in the ppb level, while TCS in the ppt level. The seasonal variation in the influent was observed due to human consumption and the rainfall. Domestic sewage discharge was an important source of TCS to the STPs. Three kinds of endocrine disrupting compounds (EDCs) could not be completely removed in the STPs, and the activated sludge treatment process contributed to most of the removal of compounds. In addition, the oxic tank and the anaerobic tank both showed good removal performances for target EDCs. According to the results produced from the calculation of the risk quotient, in the STP1 effluents TCS could pose a high risk to the aquatic environment, and STP2 effluents existed high risk of estrogen activity.