The influence of floc size, density and porosity on sediment and contaminant transport.
The influence of floc size, density and porosity on sediment and contaminant transport.
复制标题
絮体尺寸、密度和孔隙率对沉积物和污染物迁移的影响。
DOI：
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发表时间：
2000
期刊：
影响因子：
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通讯作者：
E. Ongley
中科院分区：
文献类型：
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作者：
I. Droppo;D. Walling;E. Ongley
本文考察了絮体大小、孔隙率和密度对悬浮泥沙(絮体)及其相关污染物迁移的影响。结果表明，随着絮体粒径的增大，沉降速度增大。沉降速度还受絮体密度和孔隙率与絮体尺寸的关系的影响。随着絮体尺寸的增大，密度减小，并接近水的密度。这种关系与随之而来的孔隙度增加有关，因此也与含水率的增加有关。讨论了通过絮体(孔)的流动对大型低密度絮体沉降的可能解释。给出了描述絮体孔隙率和密度与絮体大小关系的方程，并讨论了与絮体运移的关系。
This paper examines the influence of floc size, porosity and density on the transport of suspended sediment (flocs) and associated contaminants. Results demonstrate that as floc size increases the settling velocity increases. Settling velocity is also influenced by the relationship of floc density and porosity to floc size. As floc size increases, the density decreases and approaches that of water. This relationship is related to the concomitant increase in porosity, and therefore water content. The role of flow through flocs (pores) as a possible explanation for the settling of large low density flocs is discussed. Equations for describing the relationship of floc porosity and density to floc size are provided and discussed in relation to floc transport.