文档介绍：Effects of contaminants on oxygen transfer in
microbubble aeration
Chun Liu, Lei Zhang, Jing-Liang Yang*, Jian-Bo Guo, Zai-Xing Li
School of Environmental Science and Engineering
Hebei University of Science and Technology
Shijiazhuang 050018, China
******@hebust., ******@hebust.*
Abstract—Contaminants in wastewater influenced oxygen hydraulic shear method is suitable to be used in microbubble
transfer in aeration process greatly. The effects of different aeration as far as it goes [9, 10]. There are some advantages of
typical contaminants on oxygen transfer in microbubble aeration microbubble to increase oxygen transfer efficiency due to the
were investigated pared with traditional bubble aeration, small diameter, such as long bubble retention time in water
including surfactant SDBS, soybean oil, phenol and nitrobenzene because of the small terminal velocity and large specific
as well as kaolin. The results indicated that these contaminants surface area which can provide more gas-liquid contact area.
showed different effect on oxygen transfer in microbubble The enhancements of gas-water mass transfer in ozonation and
aeration, compared with traditional bubble aeration. The fermentation with microbubble aeration have been confirmed
negative effect of both anic contaminants and [9, 11, 12], while microbubble aeration in wastewater