中文摘要：

通过对美国某饮用水厂处理工艺和对象的介绍，研究各处理单元对克拉霉素（clarithromycin，CLA）、脱水红霉素（erythromycin—H20，ERY）、左氧氟沙星（1evofloxacin，LEV）、新诺明（sulfamethoxazole，SUL）和甲氧苄啶（trimethoprim，TRI）等5种目标抗生素的去除规律；从目标抗生素的残留和各处理单元的去除率角度分别分析时间和空间对去除规律的影响，并探讨抗生素和常规水质参数去除率间的相关关系。研究发现，原水中5种抗生素的平均浓度范围为0～26．8ng／L，出水降至0～2．3ng／L，该水厂工艺对5种抗生素的总去除率可达79．5％，其中CLA、ERY、LEV、SUL和TRI的去除率分别为92．8％、24％、100％、85．7％和53．2％；不同采样时间各采样点的抗生素浓度均呈现出秋季高的特点，但各处理单元的处理效率在不同的季节却表现出很大的差异；CLA可作为抗生素总量变化趋势预测的“指示抗生素”；抗生素的总量浓度和总去除率与UV254的浓度及去除率之间有很好的正相关性，可以通过对VU254值的测定和去除率的计算来预测抗生素浓度的大小和去除率变化趋势。该研究从抗生素去除角度为我国新建和改扩建饮用水厂工艺提供较好的理论依据。

英文摘要：

Abstract The study showed the removal performance of the five target antibiotics （clarithromycin（CLA] erythromycin-H20（ ERY）, levofloxacin（ LEV）, sulfamethoxazole（SUL） and trimethoprim（TRI） ） in each tre1 merit process of drinking water treatment plants in the U. S. The removal efficiency was analysed via the influenI of time and space, respectively, and the relationship between the removal rate of antibiotics and water quality 1~ rameters was discussed. The results showed that the average concentrations of the five antibiotics in source wa1 ranged from 0 to 26.8 ng/L, while 0 to 2.3 ng/L in effluent. The total removal efficiency of the antibiotics in t] water treatment processes was 79.5% with CLA 92.8% ,ERY 24% ,LE~ 100% ,SUL 85.7% ,TRI 53.2% ,~ spectively. The residual concentration of these antibiotics in each sampling place at different sampling time~ showed that autumn＇ s got to the highest, but the removal rates of different treatment units weren＇ t the same different seasons. CLA could be used as an indicating antibiotic to predict the trend of the total concentration antibiotic. There was a good positive correlation between the value or removal rate of UV254 and those of the an biotics. So we could forecast the fate of the antibiotics by calculating the value and removal rate of UV~54. It pr vided the basis to the plant design and choice of treatment processes in China with the research about remo~ performance of five antibiotics from drinking water treatment plants.