Advective flow and floc permeability.
@article{Tsou2002AdvectiveFA,
title={Advective flow and floc permeability.},
author={G. W. Tsou and Rome-Ming Wu and P S Yen and D. J. Lee and X. F. Peng},
journal={Journal of colloid and interface science},
year={2002},
volume={250 2},
pages={
400-8
}
}This work monitored advection flow through a floc by bubble tracking. Close examination of the motion of a swarm of hydrogen bubbles that passed over a free-falling floc allowed the extent of advection flow to be estimated at 53% for the original activated sludge floc, and 12% for the flocculated floc. The interior permeability of the sludge flocs was estimated from this information. The fluid force exerted on the falling floc was also considered.
30 Citations
Hydrodynamic drag force exerted on flocculated sewage sludge floc
- Engineering
- 2005
Cationic polyelectrolyte flocculated sewage sludge flocs were hung on an elastic nylon stick, and then subjected to a uniform water flow. Their consequent displacements were then measured. The…
Hydrodynamic drag force exerted on activated sludge floc at intermediate Reynolds number.
- Engineering, BiologyJournal of colloid and interface science
- 2003
Porosity and interior structure of flocculated activated sludge floc.
- EngineeringJournal of colloid and interface science
- 2003
Sedimentation of Permeable Floc
- Materials Science
- 2006
Sedimentation is an essential step to dewatering of wet materials. The present work utilized the computerized axial tomography scanner (CAT scan) to probe the sedimentation behavior of suspension…
Drag of a dispersion of nonhomogeneously structured flocs in a flow field.
- EngineeringJournal of colloid and interface science
- 2005
References
SHOWING 1-10 OF 20 REFERENCES
Advective transport in activated sludge flocs
- Engineering
- 1992
The liquid flow through activated sludge flocs from fullscale conventional treatment plants was evaluated on the basis of the information obtained from settling tests. In the samples of the mixed…
An estimate of activated-sludge floc permeability : a novel hydrodynamic approach
- Engineering
- 1998
This work estimates the interior permeability of waste activated sludge flocs by observing the motion of individual flocs moving vertically toward an impermeable flat plate. Through a comparison of…
Porosity-Size Relationship of Drilling Mud Flocs: Fractal Structure
- Materials Science
- 1993
The porosities of flocs formed from a used drilling mud were determined by measuring sizes and settling speeds of individual flocs. These flocs were produced in a Couette-type flocculator under a…
Advantages to microbes of growth in permeable aggregates in marine systems1
- Environmental Science
- 1987
Highly porous microbial aggregates occur in a variety of environments ranging from marine snow in oceans to floes in biological reactors. For permeable aggregates undergoing gravitational settling or…
Bioflocculation as a microbial response to substrate limitations
- Biology, EngineeringBiotechnology and bioengineering
- 1988
Bioflocculation is found to increase the rate of substrate transport to cells in permeable floes compared to dispersed cells, particularly for large‐molecular‐weight substrates and when bubbles are present.







