title: Advective flow and floc permeability.
abstract: 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.
authors.affiliation: Department of Chemical Engineering, National Taiwan University, Taipei, Taiwan, 106, Republic of China.
authors.forename: G W
authors.initials: GW
authors.lastname: Tsou
authors.forename: R M
authors.initials: RM
authors.lastname: Wu
authors.forename: P S
authors.initials: PS
authors.lastname: Yen
authors.forename: D J
authors.initials: DJ
authors.lastname: Lee
authors.forename: X F
authors.initials: XF
authors.lastname: Peng