Empirical model for estimating vertical concentration profiles of re-suspended, sediment-associated contaminants

作者： | H. W. Zhu, P. D. Cheng, W. Li, J. H. Chen, Y. Pang, D. Z. Wang |

作者单位： |
^{1}Shanghai Investigation, Design & Research Institute Co., Ltd^{2}Hohai University^{3}Chinese Academy of Science^{4}Shanghai University |

刊名： | Acta Mechanica Sinica, 2017, Vol.33 (5), pp.846-854 |

来源数据库： | Springer Nature Journal |

DOI： | 10.1007/s10409-017-0650-2 |

关键词： | Sediment resuspension; Pollutants; Concentration distribution; Desorption; Partition coefficient; |

英文摘要： | Vertical distribution processes of sediment contaminants in water were studied by flume experiments. Experimental results show that settling velocity of sediment particles and turbulence characteristics are the major hydrodynamic factors impacting distribution of pollutants, especially near the bottom where particle diameter is similar in size to vortex structure. Sediment distribution was uniform along the distance, while contaminant distribution slightly lagged behind the sediment. The smaller the initial sediment concentration was, the more time it took to achieve a uniform concentration distribution for suspended sediment. A contaminants transportation equation was established depending on mass conservation equations. Two mathematical estimation models of pollutant distribution in the... |

原始语种摘要： | Vertical distribution processes of sediment contaminants in water were studied by flume experiments. Experimental results show that settling velocity of sediment particles and turbulence characteristics are the major hydrodynamic factors impacting distribution of pollutants, especially near the bottom where particle diameter is similar in size to vortex structure. Sediment distribution was uniform along the distance, while contaminant distribution slightly lagged behind the sediment. The smaller the initial sediment concentration was, the more time it took to achieve a uniform concentration distribution for suspended sediment. A contaminants transportation equation was established depending on mass conservation equations. Two mathematical estimation models of pollutant distribution in the... |