Abstract

Urban wastewater (UWW) management usually entails biological and physicochemical monitoring due to its potential impact on the quality of the receiving environment. A major component of a sewage system is the pipe network leading the water to the treatment plant. Up to now, few studies have been conducted on the diverse phenomena that may affect the characteristics of the water during its transportation. In this study, ecotoxicity and potential antibiotic resistance were used in a global method to assess the change of UWW quality in a sewage system and determine if sewer pipes can act as a bioreactor spread. Three bioassays were conducted to assess the ecotoxicity of the samples and the concentration and relative abundance of two classes of integrons (as a proxy for antibiotic resistance) were measured. The results of the bioassay battery do not show a pattern, despite the fact that differences were noticeable between upstream and downstream samples. Antibiotic resistance appeared to decrease during transport in the pipe as the concentration and relative abundance of integrons decreased during several campaigns. This result should be confirmed in other sewer networks but already provides useful information for the management of urban sewage system.

中文翻译：

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城市污水网络中运输过程中废水的生态毒性和抗生素抗性。

摘要

由于城市污水（UWW）对接收环境的质量可能产生影响，因此通常需要对其进行生物和物理化学监测。污水处理系统的主要组成部分是将水引到污水处理厂的管网。迄今为止，关于可能影响水在运输过程中的特性的各种现象的研究很少。在这项研究中，生态毒性和潜在的抗生素抗性被用于全球方法中，以评估污水处理系统中UWW质量的变化，并确定下水道是否可以充当生物反应器的传播。进行了三种生物测定以评估样品的生态毒性，并测量了两类整合素的浓度和相对丰度（作为抗生素耐药性的替代指标）。尽管上游和下游样品之间的差异明显，但生物测定电池的结果没有显示出规律。在管道中的运输过程中，抗生素抗性似乎降低了，这是因为在几次运动中整合素的浓度和相对丰度都降低了。该结果应在其他下水道网络中得到证实，但已经为城市污水系统的管理提供了有用的信息。