Techno Press

Advances in Environmental Research   Volume 2, Number 1, March 2013, pages 1-8
Production of high dissolved O2/O3 with rotating wheel entraining gas method for environmental application
Haitao Li, Bo Xie and Mizhou Hui

Abstract     [Full Text]
    There is a significant demand to make various dissolved gases in water. However, the conventional aeration method shows low gas mass transfer rate and gas utilization efficiency. In this study, a novel rotating wheel entraining gas method was developed for making high dissolved O2 and O3 in water. It produced higher concentration and higher transfer rate of dissolved O2 and O3 than conventional bubble aeration method, especially almost 100% of gas transfer efficiency was achieved for O3 in enclosed reactor. For application of rotating wheel entraining gas method, aerobic bio-reactor and membrane bio-reactor (MBR) were successfully used for treatment of domestic and pharmaceutical wastewater, respectively; and vacuum ultraviolet (VUV)/UV+O3/O2 reactors were well used for sterilization in air/water, removal of dust particles and toxic gases in air, and degradation of pesticide residue and sterilization on fruits and vegetables.
Key Words
    rotating whee; entraining gas; dissolved ozone; dissolved oxygen; air purification; water treatment
Haitao Li, Bo Xie and Mizhou Hui: National Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China

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