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M-dephanox Process with Rotating Biological Contactor (RBC) in Nitirification Reactor  

Kim, Keum-Yong (Department of Environmental Engineering, Chungbuk National University)
Kang, Min-Koo (Department of Environmental Engineering, Chungbuk National University)
Shin, Gwan-Woo (Department of Environmental Engineering, Chungbuk National University)
Kang, Jung-Kyu (Department of Environmental Engineering, Chungbuk National University)
Shin, Min-Su (Department of Environmental Engineering, Chungbuk National University)
Kang, Han-Sol (Department of Environmental Engineering, Chungbuk National University)
Lee, Sang-Ill (Department of Environmental Engineering, Chungbuk National University)
Publication Information
Journal of Korean Society on Water Environment / v.29, no.1, 2013 , pp. 1-6 More about this Journal
Abstract
This study was focused on improving nitrification efficiencies of M-dephanox (Modified-Dephanox) process. Rotating biological contactor (RBC) was used instead of floating sponge type media in nitrification reactor. High ammonia removal efficiencies were observed in nitrification reactor, regardless of organic loading from contactor of M-dephanox process. Denitrification efficiencies were also increased to maintain low $NO_3-N$ concentration in effluent. This enhanced phosphate release in anaerobic contactor and resulted in high removal efficiencies of phophorus. Average removal efficiencies of $TCOD_{Cr}$ and $SCOD_{Cr}$ were 93.8% and 81.6%, respectively, while those of TKN and ${NH_4}^+-N$ were 80.9% and 74.4%, respectively. As for phosphorous treatment, the average removal efficiencies of TP and OP were 94.7% and 94.3%, respectively. Also, effect of operating temperature on nitrogen removal was examined. Average removal efficiency of TN was 65.8 % at $15^{\circ}C$ or below (at average temperature of $13.3^{\circ}C$), while that was 82.8% at $15^{\circ}C$ or above (at average temperature of $21.9^{\circ}C$).
Keywords
C/N ratio; M-dephanox; Nitrification; Rotating Biological Contactor (RBC); Temperature;
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