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首页> 外文期刊>Estuarine Coastal and Shelf Science >Emerging contaminants in municipal wastewaters and their relevance for the surface water contamination in the tropical coastal city Haikou, China
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Emerging contaminants in municipal wastewaters and their relevance for the surface water contamination in the tropical coastal city Haikou, China

机译：中国热带沿海城市海口城市污水中的新兴污染物及其与地表水污染的关系

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摘要

Wastewater treatment plants in large urban agglomerations are worldwide among the main sources of emerging contaminants in aquatic systems. The present study is a first comprehensive characterization of potentially harmful emerging contaminants in sewage of a Chinese urban area. The study area Haikou City is located at the coast of tropical Hainan Island. A GC/MS based non-target screening approach for the identification of a wider range of lipophilic to semi-polar organic sewage constituents was applied. Pollution originating from sewage was tracked in the urban coastal waters by using selected source-specific indicators.A set of sewage constituents with a high structural diversity was identified comprising both, industrial and household chemicals. Ingredients of personal care products, pesticides and pharmaceuticals were found, that were rarely reported from other regions of the world. This observation might be attributed to different environmental legislation and consumption habits in China. Exceptionally high concentrations of the illegal drug ketamine with up to 1100 ng L-1 were detected, suggesting its high popularity and consumption rate. Noteworthy, sewage constituents reported here for the first time were the pharmaceuticals marmesin, oxolamine and ansimar also with high concentrations of up to 1200 ng L-1.Elevated concentrations of sewage indicators in the main city area suggest the overflow of the sewage system, in particular in the period of a typhoon event. Tracing the sewage contamination in the surface water system of the coastal urban area of Haikou revealed a lower level of pollution. The concentration ranges point to no acute risks for the coastal ecosystem due to sewage inputs from the city area.Generally, the detected spectrum of municipal emerging contaminants has to be considered for the testing and technical improvement of wastewater treatment techniques, for regular monitoring of the surface water quality and for environmental impact assessment in China. Furthermore, the compound spectrum reported here is a good reference point for the composition of municipal sewage in other emerging economies.
机译：世界上大型城市群的废水处理厂是水生系统中新兴污染物的主要来源。本研究是对中国城市污水中潜在有害的新兴污染物的首次综合表征。研究区海口市位于热带海南岛的海岸。基于GC / MS的非目标筛选方法可用于鉴定更广泛的亲脂性至半极性有机污水成分。通过使用选定的源特定指标对城市沿海水域中的污水造成的污染进行了追踪。确定了一组具有高度结构多样性的污水成分，包括工业化学品和家用化学品。发现了个人护理产品，农药和药品的成分，世界其他地区很少报道。该观察结果可能归因于中国不同的环境法规和消费习惯。检测到异常高浓度的非法药物氯胺酮，最高可达1100 ng L-1，表明其受欢迎程度和消费率很高。值得注意的是，这里首次报告的污水成分是药物marmesin，oxolamine和ansimar，它们的最高浓度也高达1200 ng L-1。主要城市地区污水指标的升高表明污水系统的溢出。特别是在台风期间。追踪海口沿海市区地表水系统中的污水污染，发现污染程度较低。浓度范围不会因城市污水的输入而对沿海生态系统造成严重风险。通常，必须考虑检测到的市政新兴污染物频谱，以测试和改进废水处理技术，并定期监测污水处理技术。中国地表水水质和环境影响评估。此外，这里报道的复合光谱是其他新兴经济体中城市污水成分的很好参考点。

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