基于IV级逸度模型的典型抗生素多介质环境归趋研究

武亚林; 徐井旭; 凌文翠; 孙长虹; 刘桂中

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中国环境科学 ›› 2025, Vol. 45 ›› Issue (9) : 5204-5212.

新污染物

基于IV级逸度模型的典型抗生素多介质环境归趋研究

武亚林, 徐井旭, 凌文翠, 孙长虹, 刘桂中

作者信息 +

Study on multimedia environmental fate of typical antibiotics based on level IV fugacity model

WU Ya-lin, XU Jing-xu, LING Wen-cui, SUN Chang-hong, LIU Gui-zhong

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文章历史 +

摘要

逸度模型是应用较为广泛的有机污染物多介质环境归趋模型,基于IV级逸度模型,本研究模拟研究了再生水补水河流凉水河中典型抗生素(氧氟沙星和罗红霉素)多介质环境归趋行为,验证了模拟可靠性,分析了平衡时迁移通量,确定了主要迁移过程,并进行了模型关键参数灵敏度分析和不确定性分析.结果表明,模型模拟浓度与实测浓度吻合程度较高,表明模型在该研究区域的模拟有效性;研究区域内环境系统达到平衡时,水相中抗生素主要输出过程为平流过程,沉积物相主要过程是与水相的界面交换过程;平衡时氧氟沙星和罗红霉素在水和沉积物中的含量占比分别是8.73%和91.27%,27.46%和72.54%,可见沉积物是两种抗生素的主要储库;亨利定律常数H是影响两相迁移的主要因素.该研究为再生水补给型河流抗生素的环境预测与污染治理提供理论依据及决策参考.

Abstract

The fugacity model is a widely used multimedia environmental fate model for organic pollutants. Multimedia environmental fate of typical antibiotics including ofloxacin and roxithromycin in Liangshui River using reclaimed water was simulated and researched based on level IV fugacity model, and the reliability of model was verified in this study. For another, transfer flux and the main transport process were analysed and identified. Meanwhile, the model key parameters were conducted by sensitivity analysis and uncertainty analysis. The results showed that the simulated concentrations were in good agreement with the measured concentrations, which indicated the simulation effectiveness of the model in the study area. When the environmental system reached equilibrium in the study area, the water advection outflow was identified as the primary export process for target antibiotics in water, while the interfacial exchange process with water phase was the major process for sediment. Sediment was the main reservoir of two antibiotics in the study area because of the mass fraction of ofloxacin and roxithromycin in water and sediment, respectively, were 8.73% and 91.27%, 27.46% and 72.54% at equilibrium. Henry's Law constant (H) significantly influenced the two-phase migration behavior. This study provides theoretical basis and decision-making support for environmental prediction and pollution control of antibiotics in rivers using reclaimed water.

导出引用

武亚林, 徐井旭, 凌文翠, 孙长虹, 刘桂中. 基于IV级逸度模型的典型抗生素多介质环境归趋研究[J]. 中国环境科学. 2025, 45(9): 5204-5212

WU Ya-lin, XU Jing-xu, LING Wen-cui, SUN Chang-hong, LIU Gui-zhong. Study on multimedia environmental fate of typical antibiotics based on level IV fugacity model[J]. China Environmental Science. 2025, 45(9): 5204-5212

中图分类号： X522

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