Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1038/NGEO2984 |
High levels of endocrine pollutants in US streams during low flow due to insufficient wastewater dilution | |
Rice, Jacelyn1; Westerhoff, Paul2 | |
2017-08-01 | |
发表期刊 | NATURE GEOSCIENCE
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ISSN | 1752-0894 |
EISSN | 1752-0908 |
出版年 | 2017 |
卷号 | 10期号:8 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Wastewater discharges from publicly owned treatment works are a significant source of endocrine disruptors and other contaminants to the aquatic environment in the US. Although remaining pollutants in wastewater pose environmental risks, treated wastewater is also a primary source of stream flow, which in turn is critical in maintaining many aquatic and riparian wildlife habitats. Here we calculate the dilution factor-the ratio of flow in the stream receiving discharge to the flow of wastewater discharge-for over 14,000 receiving streams in the continental US using streamflow observations and a spatially explicit watershed-scale hydraulic model. We found that wastewater discharges make up more than 50% of in-stream flow for over 900 streams. However, in 1,049 streams that experienced exceptional low-flow conditions, the dilution factors in 635 of those streams fell so low during those conditions that the safety threshold for concentrations of one endocrine disrupting compound was exceeded, and in roughly a third of those streams, the threshold was exceeded for two compounds. We suggest that streams are vulnerable to public wastewater discharge of contaminants under low-flow conditions, at a time when wastewater discharges are likely to be most important for maintaining stream flow for smaller sized river systems. |
领域 | 地球科学 ; 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000406641100014 |
WOS关键词 | TREATMENT-PLANT ; RIVERBANK FILTRATION ; DISRUPTING CHEMICALS ; IMPACTED STREAM ; AQUATIC SYSTEMS ; RISK-ASSESSMENT ; PHARMACEUTICALS ; GROUNDWATER ; OZONATION ; EFFLUENT |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/34785 |
专题 | 地球科学 气候变化 |
作者单位 | 1.Duke Univ, Edmund T Pratt Sch Engn, Durham, NC 27708 USA; 2.Arizona State Univ, Sch Sustainable Engn & Built Environm, Tempe, AZ 85287 USA |
推荐引用方式 GB/T 7714 | Rice, Jacelyn,Westerhoff, Paul. High levels of endocrine pollutants in US streams during low flow due to insufficient wastewater dilution[J]. NATURE GEOSCIENCE,2017,10(8). |
APA | Rice, Jacelyn,&Westerhoff, Paul.(2017).High levels of endocrine pollutants in US streams during low flow due to insufficient wastewater dilution.NATURE GEOSCIENCE,10(8). |
MLA | Rice, Jacelyn,et al."High levels of endocrine pollutants in US streams during low flow due to insufficient wastewater dilution".NATURE GEOSCIENCE 10.8(2017). |
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