• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Micropol amp; Ecohazard 2007 : Book of Abstracts >Removal of micropollutants during drinking water production from surface water with coagulation - flocculation
【24h】

Removal of micropollutants during drinking water production from surface water with coagulation - flocculation

机译：凝结-絮凝法从地表水去除饮用水中的微污染物。

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

Surface water is an important source for drinking water supply. Organic micropollutants in surface water are present in small concentrations but may have consequences for human health. In this paper, the removal of organic micropollutants from surface water by using traditional technologies (coagulation - flocculation) in drinking water production is studied. Laboratory experiments were carried out to examine to what extent micropollutants are removed during coagulation - flocculation. Experiments were done with river water (Dijle river, Leuven, Belgium). The pH of the samples varied from 7 to 7.6 which is in the range of optimal pH in coagulation - flocculation. Four different micropollutants (aldrin, dieldrin, atrazine and bentazon) were studied with different concentrations and different amounts of coagulant Al_2(SO_4)_3.18H_2O. The removal rate of the studied micropollutants seemed to be dependent on the hydrophobicity of the components. Freundlich isotherms were calculated for the tested micropollutants to calculate the adsorption capacity. When comparing the hydrophobicity of the tested pesticides (expressed with log Kow) with the calculated log K values,rnit can be seen that the higher the hydrophobicity, the higher the adsorption capacity (see figure 1). There was a decrease in removal efficiency for different pesticides from surface water during coagulation -flocculation: aldrin (log Kow = 6.75, log K= 0.71), dieldrin (log Kow = 5.45, log K = 0.28), atrazin (log Kow = 2.82, log K = -0.14) and bentazon (log Kowrn= 1.67, log K= -0.57).rnCoagulation - flocculation can remove some organic fraction in water but the removal efficiency is too low as a stand - alone process in most cases. Therefore, in drinking water production, other techniques have to be added for moderate to high concentration of micropollutants.
机译：地表水是饮用水的重要来源。地表水中的有机微量污染物浓度低，但可能对人体健康造成影响。本文研究了在饮用水生产中使用传统技术（混凝-絮凝）从地表水中去除有机微污染物的方法。进行了实验室实验以检查在凝结-絮凝过程中微量污染物的去除量。实验是在河水（比利时鲁汶的迪杰河）上进行的。样品的pH在7至7.6之间变化，这在凝结-絮凝的最佳pH范围内。研究了四种不同的微污染物（艾氏剂，狄氏剂，阿特拉津和苯达松），其浓度和凝结剂Al_2（SO_4）_3.18H_2O的含量不同。研究的微量污染物的去除率似乎取决于组分的疏水性。计算被测微量污染物的弗氏等温线以计算吸附容量。当将被测农药的疏水性（用log Kow表示）与计算出的log K值进行比较时，可以看出，疏水性越高，吸附能力就越高（见图1）。混凝过程中，不同农药从地表水中的去除效率降低：艾氏剂（log Kow = 6.75，log K = 0.71），狄氏剂（log Kow = 5.45，log K = 0.28），阿特拉津（log Kow = 2.82） ，log K = -0.14）和苯达松（log Kowrn = 1.67，log K = -0.57）。混凝-絮凝可以去除水中的某些有机部分，但在大多数情况下，其去除效率太低，无法单独使用。因此，在饮用水生产中，必须添加其他技术以中度至高浓度的微污染物。

著录项

  • 来源
  • 会议地点 Frankfurt(DE)
  • 作者

    Thi Thuy Pham; Kathleen Moons; Bart Van der Bruggen;

  • 作者单位

    Laboratory for Applied Physical Chemistry and Environmental Technology, Department of Chemical Engineering, Faculty of Applied Sciences, Katholieke Universiteit Leuven, W. de Croylaan 46, 3001 Leuven, Belgium;

    Laboratory for Applied Physical Chemistry and Environmental Technology, Department of Chemical Engineering, Faculty of Applied Sciences, Katholieke Universiteit Leuven, W. de Croylaan 46, 3001 Leuven, Belgium;

    Laboratory for Applied Physical Chemistry and Environmental Technology, Department of Chemical Engineering, Faculty of Applied Sciences, Katholieke Universiteit Leuven, W. de Croylaan 46, 3001 Leuven, Belgium;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 水资源调2查与水利规划;
  • 关键词

    drinking water; surface water; micropollutants; coagulation/flocculation;

    机译：饮用水;地表水;微量污染物凝结/絮凝;

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