Estimate of Sludge Floc Permeability

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题名:	Estimate of Sludge Floc Permeability
作者:	Wu, R. M.;Tsou, G. W.;Lee, D. J.
贡献者:	淡江大學化學工程與材料工程學系
关键词:	Sludge floc;Permeability;Structure;Multi-fractal
日期:	2000-12
上传时间:	2013-04-13 15:51:13 (UTC+8)
出版者:	Pergamon
摘要:	This paper provides an estimate of the waste-activated sludge floc interior permeability on the basis of observing the motion of individual floc moving vertically towards an impermeable flat plate. The fluid flow fields surrounding and inside the floc were modeled numerically, from which the hydrodynamic drag force was calculated. The experimental data correlate with the numerical solutions regardless of the floc Reynolds number. Over the floc size range investigated in this paper, the permeability is noted to be approximately proportional to the square of floc size, ranging from 2.5×10−9 to for floc size ranging from 150 to 10 000 μm. The structure of waste-activated sludge floc is proposed as a multi-fractal. Permeability measured in this work is thereby mainly attributed to the global structure level of the flocs.
關聯:	Chemical Engineering Science 80(1-3), pp.37-42
DOI:	10.1016/S1383-5866(00)00075-7
显示于类别:	[化學工程與材料工程學系暨研究所] 期刊論文

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