Browse > Article

Proposed Operating Parameters for Advanced Treatment Process using a Cilium Media BNR Process  

Ahn, Yoon Hee (School of Civil and Environmental Engineering, Yonsei University)
Park, Chan Gyu (School of Civil and Environmental Engineering, Yonsei University)
Ko, Kwang Baik (School of Civil and Environmental Engineering, Yonsei University)
Lee, Kang Soo (Kyong-ho engineering & architects co., ltd)
Publication Information
Journal of Korean Society on Water Environment / v.23, no.5, 2007 , pp. 761-765 More about this Journal
Abstract
The study were conducted in order to investigate the effect of operating parameters including the internal recycle (nitrification return) rates, hydraulic retention times (HRTs) and temperature when using a cilium media method. The first experiment was for evaluating the effect of HRT (12 hr, 10 hr, 8 hr, 6 hr, 4 hr). The second experiment was for analyzing effect of internal recycle rate (100%, 200%, 300%, 400%). As a result of the first experiment, BOD was removed to 97~98% for 6~8 hr HRT. Effluent water quality was not significantly influenced with HRT within that range. However the nitrogen removal was sensitive to HRT. T-P removal efficiency was invariable at various HRTs. The average BOD removal efficiency was about 97% in spite of change of internal recycle rate while T-N removal efficiency was increased at the internal recycle rate of 100~200%, but invariable at the internal recycle rate of 200~300%.
Keywords
Cilium media; Hydraulic reaction times (HRT); Internal recycle rate; Nitrification rate; Wastewater treatment;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Bliss, P. and Barnes, D., Modelling nitrification in plant scale activated sludge, Wat. Sci. Tech., 18, pp. 139-148 (1986)
2 Anthonisen, A. C., Zidulka, A., Demedts, M. and Nadler, S., Inhibition of Nitrification by Ammonia and Nitrous Acid., J. WPCF., 48, pp. 832-838 (1976)
3 Hall, E. R. and Murphy, K. L., Estimation of Nitrifying Biomass and Kinetics in Wastewater, Wat. Res., 14, pp. 295-297 (1980)
4 Randall, C. W., Barnard, J. L. and Stensel, H. D., Design and Retrofit of Wastewater Treatment Plants for Biological Nutrient Removal, 5, Water Quality Management Library, Technomic Publishing Co., Lancaster, PA (1992)
5 Gayle, B. P., Augers, E. A., Gough, G. R. and Gilham., P. T., Biological Denitrification of Water, J. of Env. Engr. Amer. Soc. of Civil Engr., 115, pp. 928-931 (1989)
6 Gullicks, H. A. and Cleasby, J. L., Design of trickling filter nitrification tower, J. WPCF., 58(1), pp. 60-68 (1986)