上海交通大学学报

上海交通大学学报（自然版）

• 环境科学 • 上一篇    下一篇

污水厂头孢类抗生素去除规律及潜在风险评估

王朋华,袁涛
  

  1. (上海交通大学 环境科学与工程学院, 上海 200240)
  • 收稿日期:2009-05-14 修回日期:1900-01-01 出版日期:2010-11-30 发布日期:2010-11-30

Removal of Cephalosporin Antibiotics in Wastewater Treatment Plant and Preliminary Risk Assessment

WANG Penghua,YUAN Tao
  

  1. (School of Environmental Science and Engineering, Shanghai Jiaotong University, Shanghai 200240, China)
  • Received:2009-05-14 Revised:1900-01-01 Online:2010-11-30 Published:2010-11-30

摘要： 利用固相萃取高效液相色谱紫外检测(SPEHPLCUVD)分析方法，研究了不同季节5种头孢类抗生素在上海市两污水厂(MH和XZ污水厂)进水及出水中的含量水平及去除规律，并初步评价了其对受纳水体的潜在风险.结果显示，5种头孢类抗生素在污水厂进水(出水)中检出浓度(均值)为 1.12～2.75 μg/L(0.01～1.32 μg/L).综合MH污水厂的季节采样分析，发现7月份的检测浓度均低于其他3个月份，这可能与头孢类抗生素使用量的季节波动和温度升高促进其降解有关.比较分析两污水厂数据，结果提示氧化沟工艺对头孢类抗生素的去除效果比A2/O工艺好.另外，出水中的日流量计算结果表明，在不同时期，不同头孢类抗生素的排放负荷不同，对受纳水体的影响也不同.

关键词: 污水, 头孢类抗生素, 含量水平, 去除, 潜在风险

Abstract: The occurrences and removals of five cephalosporin antibiotics in two local Wastewater Treatment Plants (MHWWTP and XZWWTP) at different seasons were investigated by applying the analytical method of Solid Phase ExtractionHigh Performance Liquid ChromatographyUltraviolet Detector (SPEHPLCUVD). The preliminary risk assessment of discharge wastewater to the receiving water was performed. The results showed that all the five cephalosporin antibiotics were identified in the influent and effluent of WWTPs with the range (average values) of 1.122.75 μg/L and 0.011.32 μg/L, respectively. The comparison of seasonal data in MHWWTP showed the analyte concentrations in samples collected in July were relatively lower than those in samples collected in other seasons. This might be due to the usage fluctuation of cephalosporin antibiotics and the enhanced degradation by high temperature. In addition, it was indicated that higher removal efficiencies of cephalosporin antibiotics were obtained in the treatment process of oxidation ditch rather than that of A2/O. According to the daily mass flow of five cephalosporin antibiotics in effluent samples, it was noted that different cephalosporin antibiotics had different discharge load in varied seasons and might potentially pose dissimilar ecological and environmental risks to the receiving water.

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