| 乡镇生活污水处理厂抗生素污染水平及生态风险评价 |
| 摘要点击 1530 全文点击 177 投稿时间：2024-01-20 修订日期：2024-04-08 |
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| 中文关键词 抗生素 污水处理厂（WWTPs） 污染水平 去除效率 生态风险评估 |
| 英文关键词 antibiotics wastewater treatment plants（WWTPs） pollution levels removal efficiency ecological risk assessment |
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| 中文摘要 |
| 抗生素的滥用使得大量抗生素进入污水处理厂中,但乡镇污水处理厂中抗生素的污染尚未引起重视. 为了解乡镇污水处理厂中抗生素的污染水平及去除特性,考察了15座乡镇污水处理厂进出水中15种抗生素的污染水平和去除效率,并评估了其对水生生物和人体健康构成的风险. 结果表明,进出水中四环素类抗生素（TCs）检出浓度最高,四环素（TC）和土霉素（OTC）最高检出浓度可达（4 943.69±4.31）ng·L-1和（3 907.81±52.04）ng·L-1. 在乡镇污水处理厂中,A/O和A2/O工艺对抗生素的去除能力强于MBR工艺. 生态风险评估表明,TCs和喹诺酮类抗生素（FQs）具有较大的风险商值,会对水生生物造成中高风险；而磺胺类抗生素（SAs）对水生生物造成低风险. 虽然抗生素会对水生生物造成风险,但对人体健康的风险可忽略不计. 研究结果可为今后乡镇污水处理厂工艺的升级改造和地区抗生素排放标准的制定提供支撑. |
| 英文摘要 |
| Due to the abuse of antibiotics, a large amount of antibiotics has been entering wastewater treatment plants （WWTPs）, but the pollution of antibiotics in township WWTPs has not attracted much attention. To understand the contamination level and removal characteristics, and the risks to aquatic organisms and human health, samples collected from the inlet and outlet of 15 township WWTPs were investigated. The results showed that tetracyclines （TCs） had the highest concentration in the inlet and outlet waters, in which the concentrations of TC and oxytetracycline （OTC） reached （4 943.69±4.31） ng·L-1 and （3 907.81±52.04） ng·L-1. As for antibiotic removal, the A/O and A2/O processes had a better antibiotic removal capacity than those of the MBR process. Ecological risk assessment showed that TCs and fluoroquinolones （FQs） had a higher risk to aquatic organisms. However, sulfonamides （SAs） would pose a low risk to aquatic organisms. Although antibiotics pose a risk to aquatic organisms, the risk to human health is negligible. The results of this study could provide support for the upgrading of township WWTPs and the formulation of regional antibiotic discharge standards in the future. |
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