State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Science, Chinese Academy of Sciences, Beijing 100085, China.
Chemosphere. 2013 Jul;92(4):435-44. doi: 10.1016/j.chemosphere.2013.01.040. Epub 2013 Feb 8.
In this study, we investigated the occurrences and fates of eight quinolones (QNs), nine sulfonamides (SAs), and five macrolides (MCs) in a wastewater reclamation plant (WRP) in Beijing, China. Among all the 22 antibiotics considered, quinolones were the dominant antibiotics in all samples (4916ngL(-1) in influents, 1869ngL(-1) in secondary effluents, 123ngL(-1) in tertiary effluents, and 9200μgkg(-1) in sludge samples), followed by sulfonamides (2961ngL(-1) in influents, 1053ngL(-1) in secondary effluents, 25.9ngL(-1) in tertiary effluents, and 63.7μgkg(-1) in sludge samples) and macrolides (365ngL(-1) in influents, 353ngL(-1) in secondary effluents, 24.7ngL(-1) in tertiary effluents, and 32.7μgkg(-1) in sludge samples). The removal efficiencies of the target antibiotics were limited (-32 to 78%) in the conventional treatment. This study indicated that quinolones were mainly removed from the secondary clarifier, and sulfonamides were degraded in the oxic tank; while macrolides were considered as persistent during the conventional treatment. After the advance treatment, the target antibiotics could be effectively removed at high rates (85-100%), and the risks of antibiotic contamination significantly decreased. However, risk assessment showed that the risk of ofloxacin and erythromycin on organisms in recycled water needed further investigations.
本研究调查了中国北京一家污水再生厂（WRP）中 8 种喹诺酮类（QNs）、9 种磺胺类（SAs）和 5 种大环内酯类（MCs）的出现和归宿。在所考虑的所有 22 种抗生素中，喹诺酮类在所有样品中均占主导地位（进水 4916ngL(-1)，二级出水 1869ngL(-1)，三级出水 123ngL(-1)，污泥样品 9200μgkg(-1)），其次是磺胺类（进水 2961ngL(-1)，二级出水 1053ngL(-1)，三级出水 25.9ngL(-1)，污泥样品 63.7μgkg(-1)）和大环内酯类（进水 365ngL(-1)，二级出水 353ngL(-1)，三级出水 24.7ngL(-1)，污泥样品 32.7μgkg(-1)）。常规处理对目标抗生素的去除效率有限（-32%至 78%）。本研究表明，喹诺酮类主要从二级澄清池中去除，磺胺类在好氧池中降解；而大环内酯类在常规处理中被认为是持久的。经过预处理后，目标抗生素可以被有效去除，去除率高达 85-100%，抗生素污染的风险显著降低。然而，风险评估表明，再生水中氧氟沙星和红霉素对生物体的风险需要进一步调查。
