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http://dx.doi.org/10.4491/KSEE.2012.34.3.189

Nitrogen Removal Characteristics in DynaFlow Biofilter System Using Sewage Wastewater of Low C/N Ratio  

Kim, Jin-Sik (Department of Environmental Engineering, Chungbuk National University)
Kim, Kyu-Ri (Department of Environmental Engineering, Chungbuk National University)
Kang, Han-Sol (Department of Environmental Engineering, Chungbuk National University)
Won, In-Seop (Department of Environmental Engineering, Chungbuk National University)
Kim, Keum-Yong (Department of Environmental Engineering, Chungbuk National University)
Lee, Sang-Ill (Department of Environmental Engineering, Chungbuk National University)
Publication Information
Journal of Korean Society of Environmental Engineers / v.34, no.3, 2012 , pp. 189-194 More about this Journal
Abstract
In this study, a 3-stage biological aerated filter (BAF) system was proposed to enhance nitrogen removal in the treatment of low carbon to nitrogen ratio (C/N ratio) municipal wastewater. Laboratory experiments were conducted to evaluate the effects of dynamic-flow at the HRT of 6 h. Results of the long-term operation of 3-stage BAF systems showed that the dynamic-flow enabled the total nitrogen removal (T-N) removal efficiency of the system to be about 7 % higher than that of non-dynamic-flow system in treating domestic wastewater due to the more efficient use of organic substrates. The overall $NH_4$-N removal performance was stable during the operational period due to the unique system configuration where independent nitrification occurred. It was concluded that the 3-stage BAF system proposed in this study provided excellent performance in the removal of nitrogen by employing dynamic-flow and three columns functioning as sorption, denitrification and nitrification, respectively.
Keywords
3-Stage Biological Aerated Filter; Dynamic-Flow; Nitrification; Total Nitrogen Removal;
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