Antibiotics in hospital effluents: occurrence, contribution to urban wastewater, removal in a wastewater treatment plant, and environmental risk assessment
Antibiotics in hospital effluents: occurrence, contribution to urban wastewater, removal in a wastewater treatment plant, and environmental risk assessment
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DOI：
10.1007/s11356-018-3563-0
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发表时间：
2019-01-01
影响因子：
5.8
通讯作者：
Kilic, Havva
中科院分区：
文献类型：
--
作者：
Aydin, Senar;Aydin, Mehmet Emin;Kilic, Havva
介绍了16种不同医院污水中抗生素的存在情况、城市污水处理厂对抗生素的去除情况以及污水排放对水生生态系统的潜在生态毒理学风险。医院废水中抗生素的总浓度在夏季为21.2 +/- 0.13至4886 +/-3.80 ng/L，在冬季为497 +/- 3.66至322，735 +/-4.58 ng/L。阿奇霉素、克拉霉素和环丙沙星在所调查的抗生素中检测到的浓度最高。医院污水处理厂夏季进水抗生素总负荷为3.46g/d，冬季为303.2g/d。医院对污水处理厂进水的总抗生素贡献在夏季为13%，冬季为28%。其余的87%在夏季和72%在冬季源于家庭。常规物理和生物处理工艺对抗生素的总去除率在夏季为79%，而在冬季下降到36%。在进行环境风险评估时，冬季处理厂出水中的阿奇霉素和克拉霉素对接收环境中的水生生物（藻类和鱼类）构成高风险（RQ>10）。根据这些结果，抗生素在污水处理厂的去除效率是不够的，应该改善工厂，通过深度处理工艺去除抗生素。
The study presented the occurrence of antibiotics in 16 different hospital effluents, the removal of antibiotics in urban wastewater treatment plant (WWTP), and the potential ecotoxicological risks of the effluent discharge on the aquatic ecosystem. The total concentration of antibiotics in hospital effluents was ranged from 21.2 +/- 0.13 to 4886 +/- 3.80ng/L in summer and from 497 +/- 3.66 to 322,735 +/- 4.58ng/L in winter. Azithromycin, clarithromycin, and ciprofloxacin were detected the highest concentrations among the investigated antibiotics. The total antibiotic load to the influent of the WWTP from hospitals was 3.46g/day in summer and 303.2g/day in winter. The total antibiotic contribution of hospitals to the influent of the WWTP was determined as 13% in summer and 28% in winter. The remaining 87% in summer and 72% in winter stems from the households. The total antibiotic removal by conventional physical and biological treatment processes was determined as 79% in summer, whereas it decreased to 36% in winter. When the environmental risk assessment was performed, azithromycin and clarithromycin in the effluent from the treatment plant in winter posed a high risk (RQ>10) for the aquatic organisms (algae and fish) in the receiving environment. According to these results, the removal efficiency of antibiotics at the WWTP is inadequate and plant should be improved to remove antibiotics by advanced treatment processes.