• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>NATO Advanced Research Workshop on Enhancing Urban Environment: Environmental Upgrading of Municipal Pollution Control Facilities and Restoration of Urban Waters; 20031106-09; Rome(IT) >ADVANCES IN MODELLING THE EXPERIMENTAL DATA ON POLLUTANT DYNAMICS IN EPHEMERAL STREAMS INFLUENCED BY TRANSIENT STORAGE IN DEAD ZONES
【24h】

ADVANCES IN MODELLING THE EXPERIMENTAL DATA ON POLLUTANT DYNAMICS IN EPHEMERAL STREAMS INFLUENCED BY TRANSIENT STORAGE IN DEAD ZONES

机译：死区中暂态储集影响的表皮流污染物动力学实验数据的建模研究进展

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

The models that simulate the propagation of pollutants in streams neglecting the influence of the transient storage in dead zones seem to be unable to fit the skewness of the data measured such reaches, like the meandering ones, where this phenomenon is important. Two conceptual models, the so-called ADEK and ADENK, combining the classic ADE solution for single instantaneous spill with the conceptual schemes of linear reservoirs well known in hydrology, have been proposed to simulate the one-dimensional propagation of rapidly transient pollutograph in streams with steady flow. Their effectiveness has been verified on the basis of 17 ToT surveys specifically collected in three reaches of the Lura stream, with different levels of importance of the dead zones. It has been verified also that they can simulate, by means of the so-called ADESS superimposition procedure, the pollutograph propagation through a series of reaches, each one assumed to possess homogeneous hydraulic and geometric characteristics. Moreover, the two proposed models have been compared with the classic ADE solution, the Shifted Gamma Distribution random walk method, and the OTIS model. The ADEK and ADENK models can be physically justified, as some of their parameters show trends, which are related to the roles played by the phenomena of advection, dispersion and transient storage in dead zones, respectively. They seem able to perform excellent simulations of the experimental data, working in a comparable or even better way than the physically based models. Also, they have been extended to the more general case of non-conservative solute with first order decay rate, becoming the so-called ADEK-d and ADENK-d. It has been verified that their results fit the OTIS outputs for the same decay rate. Future developments of this research are expected from additional ToT surveys that at present are being collected, either in the Lura stream or in other ephemeral streams, like the Navile canal, which receives CSOs from the Bologna sewer system. The further work is also focused evaluating the feasibility of extending the ADESS procedure to unsteady flow.
机译：忽略死区中瞬态存储的影响而模拟污染物在河流中传播的模型似乎无法适应此类河段测量的数据的偏度，例如曲折的河段，这种现象很重要。已经提出了两个概念模型，即所谓的ADEK和ADENK，它们结合了单个瞬时溢流的经典ADE解决方案和水文学中众所周知的线性水库的概念方案，以模拟快速瞬态污染图在河流中的一维传播。稳流。根据在卢拉河三个河段专门收集的17项ToT调查结果，证实了其有效性，死区的重要性各不相同。还已经证实，它们可以通过所谓的ADESS叠加程序模拟污染曲线图在一系列射程中的传播，每个射程都假定具有均质的水力和几何特征。此外，已将两个建议的模型与经典的ADE解决方案，移位伽玛分布随机游走方法和OTIS模型进行了比较。 ADEK和ADENK模型的某些参数显示趋势，因此可以从物理上证明其合理性，这分别与死区中的平流，弥散和瞬态存储现象所起的作用有关。他们似乎能够对实验数据进行出色的模拟，与基于物理的模型相比，其工作方式可比甚至更好。同样，它们已扩展到具有一阶衰减率的非保守溶质的更一般情况，成为所谓的ADEK-d和ADENK-d。已经证明，对于相同的衰减率，其结果适合OTIS输出。从目前正在卢拉河或其他短暂河道（如纳威勒河道）中收集的其他ToT调查中，可以预期这项研究的未来发展，该纳维尔河从博洛尼亚下水道系统接收CSO。进一步的工作还集中在评估将ADESS程序扩展到非恒定流的可行性。

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