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http://dx.doi.org/10.4491/KSEE.2013.35.12.929

An Effect of the Micro Bubble Formation Depending on the Saturator and the Nozzle in the Dissolved Air Flotation System  

Park, S.C. (Environment Research Department, Advanced Technology Institute, Hyundai Heavy Industries Co., Ltd.)
Oh, H.Y. (Environment Research Department, Advanced Technology Institute, Hyundai Heavy Industries Co., Ltd.)
Chung, M.K. (Environment Research Department, Advanced Technology Institute, Hyundai Heavy Industries Co., Ltd.)
Song, S.L. (Environment Research Department, Advanced Technology Institute, Hyundai Heavy Industries Co., Ltd.)
Ahn, Y.H. (Environment Research Department, Advanced Technology Institute, Hyundai Heavy Industries Co., Ltd.)
Publication Information
Journal of Korean Society of Environmental Engineers / v.35, no.12, 2013 , pp. 929-936 More about this Journal
Abstract
The saturator and injection nozzle are important facilities on the dissolved air flotation process. To increase the formation of micro bubble, it is required to improve the air dissolving performance in the saturator and keep the pressure uniform from the saturator to the nozzle. This study aimed to evaluate the performance of the saturator and the hydraulic effect of the nozzle and the pipe structure. The air volume concentration, bubble size and bubble residual time were measured in the test. The saturator, which had mounted with the spray nozzle, showed a good performance for bubble formation. Also, the characteristics of micro bubble formation were influenced by pressure uniformity and flow velocity through the orifice in the nozzle.
Keywords
Dissolved air flotation (DAF); Saturator; Injection Nozzle; Air Volume Concentration; Bubble Size;
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