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冀西北典型北方小城镇污水处理厂中抗生素的分布和去除
摘要点击 134  全文点击 42  投稿时间:2017-10-16  修订日期:2017-12-08
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中文关键词  小城镇  污水处理厂  高效液相色谱-质谱联用法  抗生素  抗生素分布特征  进水和出水
英文关键词  small town  WWTP  SPE-LC-MS/MS  antibiotics in wastewater  distribution of antibiotics  influent and effluent
作者单位E-mail
柴玉峰 中国矿业大学(北京)化学与环境工程学院, 北京 100083
中国科学院生态环境研究中心环境模拟与污染控制国家重点联合实验室, 北京 100085 
cyf2761888@163.com 
张玉秀 中国矿业大学(北京)化学与环境工程学院, 北京 100083 zhangyuxiu@cumtb.edu.cn 
陈梅雪 中国科学院生态环境研究中心环境模拟与污染控制国家重点联合实验室, 北京 100085
中国科学院生态环境研究中心水污染控制实验室, 北京 100085 
mxchen@rcees.ac.cn 
王瑞 中国科学院生态环境研究中心环境模拟与污染控制国家重点联合实验室, 北京 100085
中国科学院生态环境研究中心水污染控制实验室, 北京 100085 
 
柳蒙蒙 中国科学院生态环境研究中心环境模拟与污染控制国家重点联合实验室, 北京 100085
中国科学院生态环境研究中心水污染控制实验室, 北京 100085 
 
郑嘉熹 中国科学院生态环境研究中心环境模拟与污染控制国家重点联合实验室, 北京 100085
中国科学院生态环境研究中心水污染控制实验室, 北京 100085 
 
魏源送 中国科学院生态环境研究中心环境模拟与污染控制国家重点联合实验室, 北京 100085
中国科学院生态环境研究中心水污染控制实验室, 北京 100085
江西省科学院能源所, 南昌 330029 
 
中文摘要
      抗生素在环境中作为一种新型污染物,是目前污水处理厂中重要的污染物之一.为考察小城镇污水处理厂对抗生素的去除效果,选择3种典型小城镇污水处理工艺(CASS、A2/O及Orbal氧化沟工艺),研究了4种四环素类、3种β-内酰胺类、4种大环内酯类、3种喹诺酮类和2种磺胺类在进出水中的浓度分布、去除情况以及不同工艺抗生素去除效率,并对抗生素浓度与水质常规指标的相关性进行分析.结果表明,所研究的污水处理厂中氧氟沙星和诺氟沙星为主要抗生素,并且去除效果较好.5个污水处理厂运行情况良好,CASS工艺和Orbal氧化沟工艺对大部分抗生素的去除效果比A2/O工艺好,抗生素去除率均能达到60%以上.同时,发现CASS工艺和A2/O工艺对β-内酰胺类(氨苄西林、青霉素)、喹诺酮类(恩诺沙星、氧氟沙星和诺氟沙星)和大环内酯类(克拉霉素)的去除效果最好,Orbal氧化沟工艺对四环素类(四环素、土霉素)和磺胺类(磺胺嘧啶)的去除效果最好.将抗生素浓度和水质基本参数(NH4+-N、TN、COD、pH等)进行相关性分析后,发现抗生素浓度与水质基本参数NH4+-N、COD呈一定正相关,污染物浓度越高,红霉素(EM)、罗红霉素(ROX)、差向四环素盐酸盐(E-TC)、克拉霉素(CLR)、环丙沙星(CIP)、氧氟沙星(OFX)、差向土霉素(E-OTC)、四环素(TC)、土霉素(OTC)以及诺氟沙星(NOR)的浓度也相对更高,这为确保小城镇污水厂的稳定运行,降低抗生素类污染物的生态风险提供了重要参考.
英文摘要
      As a new, persistent pollutant in the environment, antibiotics are one of the most important pollutants in sewage treatment plants. The objective of this work was to investigate the concentration distribution and removal efficiency of antibiotics for three typical wastewater treatment technologies applied in small towns (CASS, A2/O, and Orbal oxidation ditch) using solid phase extraction-liquid chromatography-tandem mass spectrometry. Sixteen typical antibiotics, including four tetracyclines, three β-lactams, four macrolides, three quinolones, and two sulfonamides, were analyzed in the influent and effluent. In addition, the relationship between the presence of antibiotics and the basic water quality (NH4+-N, TN, COD, pH, etc.) in the WWTPs was analyzed. The results showed that ofloxacin (OFX) and norfloxacin (NOR) were the main antibiotics in the WWTPs in this study. However, the concentrations of these two antibiotics in the effluent were low, indicating effective antibiotic removal efficiency. The antibiotic removal efficiency was higher than 60% in five of the WWTPs. Compared with the A2/O process, the CASS and Orbal oxidation ditch technologies resulted in higher removals of most of the antibiotics. In addition, the CASS and A2/O processes worked best for the removal of β-lactam [ampicillin (AMP) and penicillin (PCN)], quinolones (ENR, NOR, and OFX), and macrolide (CLR), while the Orbal oxidation ditch worked best for the removal of tetracyclines (TC and OTC) and sulfonamides [sulfadiazine (SD)]. The correlation between antibiotic concentration and the basic parameters of water quality (NH4+-N, TN, COD, pH, etc.) was analyzed, and it was found that the water quality parameters had some effect on the concentration of antibiotics. With higher concentrations of the basic water quality parameters, higher the concentration of erythromycin (EM), roxithromycin (ROX), 4-epi-Tetracycline (E-TC), clarithromycin (CLR), ciprofloxacin (CIP), ofloxacin (OFX), epioxytetracycline (E-OTC), tetracyclines (TC), oxytetracycline (OTC), and norfloxacin (NOR) were observed. In summary, it is important to ensure the stable operation of small town WWTPs to reduce the ecological risk of antibiotics.

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