Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Linggong Road 2, Dalian 116024, PR China.
Mar Pollut Bull. 2013 Aug 15;73(1):282-90. doi: 10.1016/j.marpolbul.2013.05.007. Epub 2013 Jun 14.
Antibiotics including three β-lactams, two fluoroquinolones and two macrolides, which were the top seven most prescribed antibiotics in Dalian, China, were selected to investigate their occurrence in six municipal wastewater treatment plants (WWTPs) and their distribution in the effluent-receiving waters of the Yellow Sea. Four WWTPs employing different treatment technologies were selected to explore the mechanism of antibiotics elimination during wastewater treatment. Results showed that fluoroquinolones and macrolides were dominant species in both WWTPs effluents and the surveyed coastal waters. Biodegradation was the main pathway for β-lactams removal, however, primary treatment performed better than biological treatment for fluoroquinolones removal. Concentrations of macrolides increased dramatically after the biological treatment, which was probably due to the release of macrolides enclosed in feces particles. In the surveyed coastal waters, reduction of antibiotic concentration with distance was observed. Potential environmental risk caused by the occurrence of these antibiotics should be evaluated in future work.
选取了包括三种β-内酰胺类、两种氟喹诺酮类和两种大环内酯类在内的七种中国大连最常使用的抗生素，以调查它们在中国六个城市污水处理厂（WWTP）的出现情况及其在黄海受纳水体中的分布情况。选取了采用不同处理技术的四个 WWTP 以探究抗生素在废水处理过程中的去除机制。结果表明，氟喹诺酮类和大环内酯类是 WWTP 出水和调查海域中的主要种类。β-内酰胺类的去除主要通过生物降解，但对于氟喹诺酮类的去除，初级处理优于生物处理。在生物处理后，大环内酯类的浓度显著增加，这可能是由于粪便颗粒中包裹的大环内酯类的释放。在所调查的海域中，随着距离的增加，抗生素浓度降低。在未来的工作中，应评估这些抗生素的出现所带来的潜在环境风险。
