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http://dx.doi.org/10.4491/KSEE.2017.39.5.277

A Study on the Relation Characteristics between Bubble Size Distribution and Floating Time  

Jeon, Gun (Department of Environmental Engineering, University of Seoul)
Park, Chul-Hwi (Department of Environmental Engineering, University of Seoul)
Publication Information
Journal of Korean Society of Environmental Engineers / v.39, no.5, 2017 , pp. 277-281 More about this Journal
Abstract
Lately rainfall characteristics that it rains a lot in a short space of time often occurs. Because of this meteorological phenomena, the flow rate and concentration of initial rainfall for runoff and combined sewer overflows are changed. In the case of this inlet fluctuation, the flotation method at high surface loading rate is suitable for water quality management. the flotation method is able to meet the removal rate requirements of water public zone in 5 to 10 min which is irelatively short period. For assessment and diagonision of flotation method, A/S ratio is applied until now. But unfortunately, this has some limits for evaluation standard for certification and assessment of technical diagnosis and operation. This is why there is different efficiency in the bubble distribution at the same A/S ratio. The velocity and time of floating is changed by the different bubble distributions. The floating time affects the plant volume because the time factor make size dicision. Therefore the charateristics of bubble distribution and floating time at the same A/S ratio is necessary to apply to evaluation standard for certification and assessment of technical diagnosis and operation. For generalization of the method in certification and assessment, the characteristics of bubble distribution was studied. Until recently, using the optical device and shooting live video, there are some analysis technology of the floating factors. But this kind of technology is influenced by the equipment. with this level of confidence about the results, it is difficult to apply to generalize. According this reasons, this study should be applied on experiment generalization of method about measurement of relation between bubble distribution and floating time.
Keywords
Microbubble; Wastewater Treatment; Floating Method;
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Times Cited By KSCI : 1  (Citation Analysis)
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