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.
| Original language | English |
|---|---|
| Pages (from-to) | 135-141 |
| Journal | Journal of the Chinese Institute of Chemical Engineers |
| Volume | 38 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - Mar 2007 |
| Externally published | Yes |
Bibliographical note
Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].Research Keywords
- CLSM
- Floc model
- Flow distribution
- Permeability
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