Reynolds number-dependent permeability of wastewater sludge flocs
Resource
Journal of the Chinese Institute of Chemical Engineers 38 (2): 135-141
Journal
Journal of the Chinese Institute of Chemical Engineers
Journal Volume
38
Journal Issue
2
Pages
135-141
Date Issued
2007
Date
2007
Author(s)
Abstract
Most theoretical models assume constant permeability of wastewater sludge floc. This work shows that, at creeping flow limit with small intrafloc Reynolds number, the permeability of floc can not only be affected by floc structure, but also by the external flow condition. The three-dimensional structure of flocs using the fluorescence in situ hybridization (FISH) and the confocal laser scanning microscope (CLSM) was firstly probed. Then, the volumetric grid models for sludge flocs were constructed. We noted that the floc permeability could keep unchanged, increased, or decreased at increasad Reynolds number (Re). Flow redistribution among channels of various sizes contributes to the noted Re-dependent permeability of flocs. © 2007 Taiwan Institute of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
SDGs
Type
journal article
File(s)![Thumbnail Image]()
Loading...
Name
95.pdf
Size
2.43 MB
Format
Adobe PDF
Checksum
(MD5):c2450293d32b2a8332a945443457b947