Effect of the uniform shearing vibration membrane filtration on the membrane fouling in the concentration of microalgae
Uniform shearing vibration membrane technology is a new type of membrane fil-tration technology,which can generate strong and constant shear force to effectively reduce membrane pollution.In this study,the experiment of the reflux of microalgae filtration and the experiment of the concentration of microalgae filtration were carried out respectively.By analyzing the transmembrane pressure(TMP),changes in membrane morphology and the extracellular organic matter(EOM)components on the membrane,the anti-pollution ability of uniform shearing vibration membrane during the concentration of microalgae harvesting was explored.The results showed that the uniform shearing vibration membrane was seri-ously fouled during the concentration of microalgae harvesting,and the major cause was the continuous increase of microalgae concentration which resulted in a high level of reversible fouling(75.24%),but after rinsing the membrane flux was effectively recovered from 329.8 L/(m2·h)to 2400.5 L/(m2·h).Overall,it is feasible to concentrate microalgae by uni-form shearing vibration membrane.
uniform shearing vibration membranemembrane filtrationmembrane foulingmicroalgae harvestingconcentration of microalgae
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