Occurrence, removal, and environmental risks of pharmaceuticals in wastewater treatment plants in south China

被引:0
作者
Huang Huang
Jie Wu
Jian Ye
Tingjin Ye
Jia Deng
Yongmei Liang
Wei Liu
机构
[1] Sun Yat-sen University,School of Environmental Science and Engineering
[2] Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology,undefined
[3] Foshan Water Group Co.,undefined
[4] Ltd.,undefined
来源
Frontiers of Environmental Science & Engineering | 2018年 / 12卷
关键词
Wastewater treatment; Pearl River Delta; Occurrence; Removal; Risk assessment;
D O I
暂无
中图分类号
学科分类号
摘要
Pharmaceutically active compounds in wastewater released from human consumption have received considerable attention because of their possible risks for aquatic environments. In this study, the occurrence and removal of 10 pharmaceuticals in three municipal wastewater treatment plants in southern China were investigated and the environmental risks they posed were assessed. Nifedipine, atenolol, metoprolol, valsartan and pravastatin were detected in the influent wastewater. The highest average concentration in the influents was observed for metoprolol (164.6 ng/L), followed by valsartan (120.3 ng/L) in August, while median concentrations were higher in November than in August. The total average daily mass loadings of the pharmaceuticals in the three plants were 289.52 mg/d/person, 430.46 mg/d/person and 368.67 mg/d/person, respectively. Elimination in the treatment plants studied was incomplete, with metoprolol levels increasing during biological treatment. Biological treatment was the most effective step for PhACs removal in all of the plants studied. Moreover, the removal of PhACs was observed with higher efficiencies in August than in November. The WWTP equipped with an Unitank process exhibited similar removals of most PhACs as other WWTPs equipped with an anoxic/oxic (A/O) process or various anaerobic-anoxic-oxic (A2/O) process. The environmental risk assessment concluded that all of the single PhAC in the effluents displayed a low risk (RQ<0.1) to the aquatic environments.
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