Investigation of the behavior of natural hormones and antibiotic compounds in river water bodies based on model watercourse experiments

除了天然存在的腐殖分子和生物废水处理过程中诱导的代谢产物外，由于工业和社会活动而产生的大量痕量有机化合物已经发现它们存在于大多数天然水源中，例如河流和湖泊。在这些化合物中，17 β雌二醇（E2）和雌酮（E1）以及兽用抗生素由于其对人类和野生动物的强烈不利影响而受到极大关注。为了保护天然水体，特别是缓解和预防自来水水质风险的发生，澄清有关化合物的行为，从而建立可行的检测和预测方法显得尤为重要，同时考虑到相关文献信息非常有限。选择在自然水体中广泛存在且具有显著安全风险的有机磷农药作为目标， ...更多信息 离子。通过对长良川干流、主要支流和某淡水坝水库的水、沉积物样品进行间歇和连续流柱实验，研究了长良川的耗散行为和机制，并进行了相应的数据分析，以检验和预测其在相关水体中的耗散情况。此外，使用从传统的污水处理厂的活性污泥采样，天然激素的行为进行了研究，并评估了操作条件和共存的可生物降解的有机分子的影响。关于兽用抗生素的行为，也进行了柱实验，固定颗粒活性炭预涂有从长良河主流的河床泥分离的微生物。通过一系列的实验，掌握了目标化合物的耗散行为和机制，并获得了一些新的发现，有助于建立系统的预测方法。少

In addition to naturally-occurring humic molecules and metabolic products induced from biological wastewater treatment processes, a larger number of trace organic compounds occurred due to industrial and social activities have found their presence in most natural water sources, such as rivers and lakes. Among such compounds, 17 beta estradiol (E2) and estrone (El), together with veterinary antibiotics are greatly concerned due to their strong adversary impacts on humans and wildlife. lb preserve natural water bodies, particularly to alleviate and prevent the happening of tap water quality risk, clarification of the behavior of the concerned compounds, and thus to establish feasible examination and prediction approaches are particularly important, taking into account that relative literature information is very limited.In this study, natural hormones, which are widely detected in natural water bodies and are found possessing eminent safety risk, were chosen as the targets for investigat … More ion. By performing batch and continuous flow column experiments using the water and sediment samples from the mainstream and major tributaries of Nagara River and those from a freshwater dam reservoir, the dissipation behavior and mechanisms were investigated and corresponding data analysis was performed, so as to examine and predict their this in related water bodies. In addition, using activated sludge sampled from a conventional wastewater treatment plant, the behavior of natural hormones was studied, and the impacts of operational conditions and coexisting bio-degradable organic molecules were evaluated. In regard of the behavior of veterinary antibiotics, column experiments with fixed granular activated carbon pre-coated with microorganisms detached from riverbed mud of the mainstream of Nagara River were also performed. Through all these series of experiments, the dissipation behavior and mechanisms of targeted compounds were grasped, and several new findings that could benefit establishment of a systematic prediction approach were obtained. Less