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http://dx.doi.org/10.17663/JWR.2013.15.1.001

Evaluation of Pilot scale Coagulation system Design for CSOs treatment  

Lee, Seung-Chul (Department of Urban Engineering, Chungbuk National University)
Ha, Sung-Ryong (Department of Urban Engineering, Chungbuk National University)
Publication Information
Journal of Wetlands Research / v.15, no.1, 2013 , pp. 1-8 More about this Journal
Abstract
A pilot scale coagulation system, which has a function of physicochemical treatment, was developed to treat Combined sewer overflows(CSOs). This coagulation system requires evaluation of optimum design factors whether it has reflected those of lab scale system, moreover, the pilot scale system can be evaluated differently according to the characteristics of influent CSOs even though it has reflected lab scale's design factors. We conducted an experiment using lab scale system that could treat $1m^3$ of CSOs in a day, and also pilot-scale system with $100m^3/day$ CSOs flowed into the Cheongju sewage treatment plant. Therefore the aim of this study is to evaluate a hydraulic similarity between the design factors of pilot scale and those of lab scale coagulation system, and to evaluate feasibility of the coagulation system for the CSOs treatment with optimum operation conditions. From the result of pilot-test, we drew the optimum operation factors of in line mixer and flocculator having similarities with those of lab scale system as well as the optimum coagulant dose. Finally we confirmed that the coagulation system has feasibility to treat the CSOs with high removal efficiency.
Keywords
Coagulation system; Combined Sewer Overflows; Design factors; Hydraulic similarity; Scale up;
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  • Reference
1 Bang, KW and Lee, JH (2001). Combined sewer overflow control using the swirl concentrator, J. of Korean Society of Environmental Engineers, 23(1), pp. 21-30. [Korean Literature]
2 Dauthuille, P (1992). The DENSADEG a new high performance settling tank, Proceedings of 5th Gothenburg Symposium on Chemical Water and Wastewater Treatment, pp. 135-150.
3 Guibein, E, Destalle, F, Binot, P (1994). The ACTIFLO Process: A highly compact and efficient process to prevent water pollution by stormwater flows, Water Science and Technology, 30(1), pp. 87-96.
4 Han, JK, Joo, JY, Lee, BJ, Na, JH, Park, CH (2009). Optimal operating condition of vortex separator for combined sewer overflows treatment, J. of Korean Society of Water and Wastewater, 23(5), pp. 557-564. [Korean Literature]
5 Jarmer, DJ, Lengsfeld, CS, Randolph, TW (2006). Scaleup criteria for an injector with a confined mixing chamber during precipitation with a compressed-fluid antisolvent, The Journal of Supercritical Fluids, 37(2), pp. 242-253.   DOI   ScienceOn
6 Korea Water and Wastewater works Association (KWWA) (2004). Water Supply Facilities Standard, Ministry of Construction and Transportation. [Korean Literature]
7 Li, M, White, G, Wilkinson, D, Roberts, KJ (2005). Scale up study of retreat curve impeller stirred tanks using LDA measurements and CFD simulation, Chemical Engineering Journal, 108(1-2), pp. 81-90.   DOI   ScienceOn
8 National Institute of Environmental Research (NIER) (2008). The 2 Stage Technical Guideline of Korean Total Maximum Daily Load, Ministry of Environment, Korea. [Korean Literature]
9 Park, NS, Park, HK, Kim, UY, Han, SC (2001). Application of hydraulic similarity to Jar - test for optimizing dosages of coagulants, J. of Korean Society of Environmental Engineers, 23(11), pp. 1965-1874. [Korean Literature]
10 Shin, EB and Yoon, HS (1998). Pollutants settling characteristics of combined sewer overflows in urban area, J. of Korean Society on Water Quality, 14(4), pp. 425-432. [Korean Literature]
11 Yoon, HS, Lee, DJ, Park, YS (2006). Application of particle size analysis to predict the settleability of CSO pollutants, J. of Korean Society of Water and Wastewater, 20(2), pp. 295-302. [Korean Literature]
12 Yoon, TI and Kim, CG (2008). Case studies on rapid coagulation processes to cope with total emission controls, Desalination, 231, pp. 290-296.   DOI   ScienceOn