Vertical Shaft Digestion, Flotation, and Biofiltration

Wang, Lawrence K.; Shammas, Nazih K.; Guild, Jeffrey; Pollock, David W.

doi:10.1007/978-1-60327-170-7_12

Cited by 2 publications

(1 citation statement)

References 17 publications

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“…For QQ fhe range went from 45 fo 813 cm^/s. Wifh the lower QL (in both modes of operation and both distances befween plates), Ap never exceeded 0.36 kPa (Figure 3), in fhe range of values presented by Wang et al (2009) for BFs. For higher values of QL and QG, Ap was still kepf below fhat value in co-current flow.…”

Section: Resultsmentioning

confidence: 89%

Biofilm growth and hydrodynamic behaviour in the biological plate tower (BPT) with and without hanging biomass (BPT-HB)

Peixoto

Pinto

2012

Water Science and Technology

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Deodorization and volatile organic compound abatement from polluted air streams can be accomplished with the biological plate tower (BPT), which has proved to be a reliable alternative to biofilters and biotrickling filters. Unlike those, the BPT is a non-clogging device, with constant active surface, and steady performance, making it ideal for scale-up and modelling. The initial BPT design needed improvement for better performance. The cylindrical body (circular plates) was replaced by a rectangular cuboid (rectangular plates). Holes in the plates did augment the amount of active biomass (hanging from the holes and under the plates), without reducing the transfer of toluene from the gaseous to the liquid phase. The diminished distance between plates was well tolerated in co-current flow, allowing much higher quantities of biomass in the same reactor volume. With 18 and 14 mm spacing between adjacent plates, the BPT, with and without holes, was tested for flooding, holdup and pressure drop. Several gas and liquid flows were tested, both in co-current and counter-current. In hydrodynamic terms, the BPT-HB with co-current flow was clearly the best option. Higher stability with higher flow rates, and lower pressure drops were observed. The inoculum was obtained from wastewater plant activated sludge (petrochemical industry).

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Section: Resultsmentioning

confidence: 89%