https://scholars.lib.ntu.edu.tw/handle/123456789/407701
標題: | Builiding structural model for biological aggregate | 作者: | Chu C.-P. Lee D.-J. |
關鍵字: | CLSM;Floc model;Pore;Structure;Transport process | 公開日期: | 2006 | 來源出版物: | AIChE Annual Meeting, Conference Proceedings | 摘要: | The three-dimensional pore structures in waste activated sludge floc were identified using the fluorescence in situ hybridization (FISH) and confocal laser scanning microscope (CLSM) images. The meshes of the three-dimensional porous configuration of a sludge floc were constructed from the CLSM series images. The intrafloc flow field was simulated for the constructed floe model when it was subjected to a uniform flow field, based on which the Darcy's permeability was estimated. The permeability (KDL) of original floe was estimated as 8¡Ñ10-12 m2. Flocculated floes had higher KDL due to their large pore size, while the corresponding values of KDL of the freeze/thawed floes were lower. The calculated results indicate that a few large pores in the floc determine the permeability. The fractal dimension and compactness, however, are not correlated with the permeability of the flocs. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/407701 |
顯示於: | 化學工程學系 |
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