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Abstract：
BACKGROUND: Conventional wastewater treatment plants discharge significant amounts of antibiotic resistant bacteria and antibiotic resistance genes into natural water bodies contributing to the spread of antibiotic resistance. Some advanced wastewater treatment technologies have been shown to effectively decrease the number of bacteria. Nevertheless, there is still a lack of knowledge about the effectiveness of these treatments on antibiotic resistant bacteria and antibiotic resistant genes. To the best of our knowledge, no specific studies have considered how powdered activated carbon (PAC) treatments can act on antibiotic resistant bacteria, although it is essential to assess the impact of this wastewater treatment on the spread of antibiotic resistant bacteria.
METHODS: To address this gap, we evaluated the fate and the distribution of fluorescent-tagged antibiotic/ antimycotic resistant microorganisms in a laboratory-scale model simulating a process configuration involving powdered activated carbon as advanced wastewater treatment. Furthermore, we studied the possible increase of naturally existing antibiotic resistant bacteria during the treatment implementing PAC recycling.
RESULTS: The analysis of fluorescent-tagged microorganisms demonstrated the efficacy of the PAC adsorption treatment in reducing the load of both susceptible and resistant fluorescent microorganisms in the treated water, reaching a removal efficiency of 99.70%. Moreover, PAC recycling did not increase the resistance characteristics of cultivable bacteria neither in the sludge nor in the treated effluent.
CONCLUSIONS: Results suggest that wastewater PAC treatment is a promising technology not only for the removal of micropollutants but also for its effect in decreasing antibiotic resistant bacteria release.
METHODS: To address this gap, we evaluated the fate and the distribution of fluorescent-tagged antibiotic/ antimycotic resistant microorganisms in a laboratory-scale model simulating a process configuration involving powdered activated carbon as advanced wastewater treatment. Furthermore, we studied the possible increase of naturally existing antibiotic resistant bacteria during the treatment implementing PAC recycling.
RESULTS: The analysis of fluorescent-tagged microorganisms demonstrated the efficacy of the PAC adsorption treatment in reducing the load of both susceptible and resistant fluorescent microorganisms in the treated water, reaching a removal efficiency of 99.70%. Moreover, PAC recycling did not increase the resistance characteristics of cultivable bacteria neither in the sludge nor in the treated effluent.
CONCLUSIONS: Results suggest that wastewater PAC treatment is a promising technology not only for the removal of micropollutants but also for its effect in decreasing antibiotic resistant bacteria release.
摘要：
背景：传统的废水处理厂将大量的抗生素抗性细菌和抗生素抗性基因排放到天然水体中，导致抗生素抗性的传播。一些先进的废水处理技术已被证明可以有效减少细菌的数量。然而，对于这些治疗对抗生素抗性细菌和抗生素抗性基因的有效性仍然缺乏了解。据我们所知,没有具体的研究考虑到粉状活性炭（PAC）治疗如何作用于抗生素抗性细菌，尽管评估这种废水处理对抗生素抗性细菌传播的影响至关重要。
方法：为了解决这个问题，我们在实验室规模模型中评估了荧光标记的抗生素/抗真菌抗性微生物的命运和分布,该模型模拟了涉及粉末活性炭作为高级废水处理的工艺配置.此外，我们研究了在实施PAC回收的治疗过程中天然存在的抗生素抗性细菌的可能增加。
结果：对荧光标记微生物的分析表明，PAC吸附处理在减少处理水中易感和抗性荧光微生物的负荷方面具有功效，达到99.70%的去除效率。此外，PAC回收既没有在污泥中也没有在处理过的废水中增加可培养细菌的抗性。
结论：结果表明，废水PAC处理是一种有前途的技术，不仅可以去除微污染物，而且可以减少抗生素耐药性细菌的释放。
方法：为了解决这个问题，我们在实验室规模模型中评估了荧光标记的抗生素/抗真菌抗性微生物的命运和分布,该模型模拟了涉及粉末活性炭作为高级废水处理的工艺配置.此外，我们研究了在实施PAC回收的治疗过程中天然存在的抗生素抗性细菌的可能增加。
结果：对荧光标记微生物的分析表明，PAC吸附处理在减少处理水中易感和抗性荧光微生物的负荷方面具有功效，达到99.70%的去除效率。此外，PAC回收既没有在污泥中也没有在处理过的废水中增加可培养细菌的抗性。
结论：结果表明，废水PAC处理是一种有前途的技术，不仅可以去除微污染物，而且可以减少抗生素耐药性细菌的释放。
