...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>The Science of the Total Environment >Emerging contaminants in a river receiving untreated wastewater from an Indian urban centre
【24h】

Emerging contaminants in a river receiving untreated wastewater from an Indian urban centre

机译：从印度城市中心接收未经处理的废水的河流中的新兴污染物

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Research over the last decade on emerging trace organic contaminants in aquatic systems has largely focused on sources such as treated wastewaters in high income countries, with relatively few studies relating to wastewater sources of these contaminants in low and middle income countries. We undertook a longitudinal survey of the Ahar River for a number of emerging organic contaminants (including pharmaceuticals, hormones, personal care products and industrial chemicals) which flows through the city of Udaipur, India. Udaipur is a city of approximately 450,000 people with no wastewater treatment occurring at the time of this survey. We found the concentrations of many of the contaminants within the river water were similar to those commonly reported in untreated wastewater in high income countries. For example, concentrations of pharmaceuticals, such as carbamazepine, antibiotics and non-steroidal anti-inflammatory drugs, ranged up to 1900 ng/L. Other organic contaminants, such as steroid estrogens (up to 124 ng/L), steroid androgens (up to 1560 ng/L), benzotriazoles (up to 11 mu g/L), DEET (up to 390 ng/L), BPA (up to 300 ng/L) and caffeine (up to 37.5 mu g/L), were all similar to previously reported concentrations in wastewaters in high income countries. An assessment of the population densities in the watersheds feeding into the river showed increasing population density of a watershed led to a corresponding downstream increase in the concentrations of the organic contaminants, with quantifiable concentrations still present up to 10 km downstream of the areas directly adjacent to the highest population densities. Overall, this study highlights how a relatively clean river can be contaminated by untreated wastewater released from an urban centre. Crown Copyright (C) 2018 Published by Elsevier B.V. All rights reserved.
机译：在过去的十年中，对水生系统中出现的痕量有机污染物的研究主要集中在高收入国家的经处理废水等来源，而在中低收入国家中有关这些污染物的废水来源的研究则相对较少。我们对阿哈尔河进行了纵向调查，以调查流经印度乌代浦市的多种新兴有机污染物（包括药品，激素，个人护理产品和工业化学品）。乌代浦市是一个大约有45万人的城市，在进行这项调查时未进行废水处理。我们发现河水中许多污染物的浓度与高收入国家未经处理的废水中常见的污染物浓度相似。例如，卡马西平，抗生素和非甾体类抗炎药等药物的浓度最高可达1900 ng / L。其他有机污染物，例如类固醇雌激素（最高124 ng / L），类固醇雄激素（最高1560 ng / L），苯并三唑（最高11μg / L），DEET（最高390 ng / L），BPA （最高300 ng / L）和咖啡因（最高37.5μg / L），都与先前报道的高收入国家废水中的浓度相似。对流入河流的流域人口密度的评估表明，流域人口密度的增加导致下游有机污染物浓度相应增加，在紧邻该区域的下游10公里处仍存在可量化的浓度最高的人口密度。总体而言，这项研究强调了从城市中心释放的未经处理的废水如何污染相对清洁的河流。官方版权（C）2018，由Elsevier B.V.保留所有权利。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号