ABSTRACT

At present, the distribution of antibiotics in wastewater is mainly concentrated in municipal sewage treatment plants, and little attention is paid to the distribution and removal of antibiotics in landfill leachate. The concentrations of five sulfonamide, three tetracycline, and two macrolide antibiotics in leachate from a solid waste incineration plant were measured and the efficiency of the leachate treatment process in removing them was investigated. All target antibiotics were detected in the raw leachate samples. The total sulfonamide, tetracycline, and macrolide concentrations in the raw leachate ranged from 0.98 to 90.25, 1.90 to 50.64, and 146.41 to 382.90 ng/L, respectively. The leachate treatment process simultaneously removed all ten antibiotics with high removal efficiencies ranged from 96.0% to 100%. Biological and physical processes affected the removal of different types of antibiotics differently, with macrolides being more difficult for microorganisms to degrade than the other two categories. Leachate contaminants correlated to antibiotics suggesting environmental factors impact the removal of antibiotics. The accumulation of antibiotics in the leachate treatment process may create environmental problems.

摘要

目前，废水中抗生素的分布主要集中在城市污水处理厂，对垃圾渗滤液中抗生素的分布和去除关注较少。测量了固体废物焚烧厂渗滤液中五种磺胺、三种四环素和两种大环内酯类抗生素的浓度，并研究了渗滤液处理工艺去除它们的效率。在原始渗滤液样品中检测到所有目标抗生素。粗浸出液中磺胺、四环素和大环内酯的总浓度分别为 0.98 至 90.25、1.90 至 50.64 和 146.41 至 382.90 ng/L。渗滤液处理过程同时去除了所有十种抗生素，去除效率从 96.0% 到 100% 不等。生物和物理过程对不同类型抗生素的去除产生不同的影响，大环内酯类比其他两类更难被微生物降解。与抗生素相关的渗滤液污染物表明环境因素会影响抗生素的去除。渗滤液处理过程中抗生素的积累可能会造成环境问题。