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Ozone‐contactor flow visualization and quantification using three‐dimensional laser‐induced fluorescence
Author(s) -
Kim Dooil,
Nemlioglu Semih,
Roberts Philip J.W.,
Kim JaeHong
Publication year - 2010
Publication title -
journal ‐ american water works association
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.466
H-Index - 74
eISSN - 1551-8833
pISSN - 0003-150X
DOI - 10.1002/j.1551-8833.2010.tb10029.x
Subject(s) - contactor , venturi effect , tracer , inflow , flow visualization , mixing (physics) , ozone , plug flow , flow (mathematics) , laser induced fluorescence , ultraviolet , spark plug , materials science , inlet , environmental science , chemistry , mechanics , nuclear engineering , laser , optics , thermodynamics , mechanical engineering , optoelectronics , physics , engineering , nuclear physics , quantum mechanics , power (physics) , organic chemistry
Three‐dimensional laser‐induced fluorescence (3D LIF) was applied for the first time to investigate hydrodynamics and mixing in an ozone contactor used for water disinfection. The unsteady, three‐dimensional flow and mixing in the contactor was visualized and quantitatively analyzed, providing information that has not been possible to supply with traditional tracer techniques. In particular, the results obtained from a model reactor with a sidestream venturi injection suggested that the overall reactor hydrodynamics were close to a plug flow despite the jet injection at the inlet. The inflow separated into two streams as it reached the opposite wall, and the streams swirled as they traveled through the reactor, allowing a “plug‐flowlike” condition to develop in each water stream. The 3D LIF technique is expected to be useful for the design and optimization of ozone contactors and other disinfection reactors, including chlorine contactors and ultraviolet reactors.