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http://dx.doi.org/10.5762/KAIS.2014.15.5.3336

Development and Lab-scale Plant Study of Coagulation Sedimentation Module using Cyclone  

Moon, Jinyoung (Environmental Research Institute, Inha University)
Cho, Young-Gun (School of Urban and Environmental Engineering, Incheon National University)
Song, Seung-Jun (School of Urban and Environmental Engineering, Incheon National University)
Kim, Jin-Han (School of Urban and Environmental Engineering, Incheon National University)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.15, no.5, 2014 , pp. 3336-3344 More about this Journal
Abstract
The purpose of this study is small scale coagulation module is developed and demonstrated through a lab-scale test. Recent as a sewage treatment rate increases, have heightened the interest in the necessity on the nonpoint source and developing a small processing unit has been increased. Coagulation sedimentation module in this study is additional growth of floc through swirling in the outside zone, reduction of microstructure floc number and the internal settling zone through vertical/level flow complex sedimentation method after the coagulation process precipitation method as an effective high separation efficiency can be divided was also assessed. Coagulation sedimentation module can increase the load factor was 4.4 times compared to conventional clarifier base on the same volume and surface area through vertical/level flow. In this study, this process was selected formation and maintenance of swirling and uniform flow distribution in the internal settling zone as an important design factor, to derive its FLUENT was used to characteristics of the flow model. Through the simulation of swirling, influent velocity, dimensions of external basin, hopper depth of bottom cone was determined and through analysis of velocity distribution, flow distribution detailed specifications are derived like as diameter and number of effluent hole. Lab-scale($120{\ell}/hr$) test results, influent of 300~800 NTU to less than 10 NTU without polymer feeding was able to operate in the 20minutes retention time(surface loading rate $37.3m^3/m^2$-day), and through analysis FLUENT the possibility of using design parameters were derived.
Keywords
coagulation sedimentation module; cyclone; non-point source;
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