Hydrodynamic characterisation of an airlift reactor for domestic wastewater treatment
M Arias-Peñaranda, R Reyna-Velarde… - International …, 2012 - inderscienceonline.com
M Arias-Peñaranda, R Reyna-Velarde, RO Cañizares-Villanueva
International Journal of Environmental Engineering, 2012•inderscienceonline.comThis study evaluates the hydrodynamic and mass-transfer behaviour of a 20-L airlift
photobioreactor, employed for secondary wastewater treatment of domestic effluent. Gas
hold-up (ε), as well as the volumetric mass transfer coefficient (k L a) was assessed as a
function of superficial gas velocity (Ug) for both bi-and triphasic systems. In the experimental
range of Ug investigated, the maximum k L a and ε obtained were in the order of 0.0074 s− 1
and 0.035 for water/air system and 0.0097 s− 1 and 0.026 for triphasic system respectively …
photobioreactor, employed for secondary wastewater treatment of domestic effluent. Gas
hold-up (ε), as well as the volumetric mass transfer coefficient (k L a) was assessed as a
function of superficial gas velocity (Ug) for both bi-and triphasic systems. In the experimental
range of Ug investigated, the maximum k L a and ε obtained were in the order of 0.0074 s− 1
and 0.035 for water/air system and 0.0097 s− 1 and 0.026 for triphasic system respectively …
This study evaluates the hydrodynamic and mass-transfer behaviour of a 20-L airlift photobioreactor, employed for secondary wastewater treatment of domestic effluent. Gas hold-up (ε), as well as the volumetric mass transfer coefficient (k L a) was assessed as a function of superficial gas velocity (Ug) for both bi- and triphasic systems. In the experimental range of Ug investigated, the maximum k L a and ε obtained were in the order of 0.0074 s −1 and 0.035 for water/ air system and 0.0097 s −1 and 0.026 for triphasic system respectively. The results indicate that this PBR is a good candidate for wastewater treatment, with lower power costs than other types of biological reactors.
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