Membrane-BNR 공정의 유동상 담체 호기조내 SND 평가

SND in Fludized Media Aerobic Tank of Membrane-BNR Process

  • Lee, Jung-Yeol (Department of Environmental Engineering, Kyungpook National University) ;
  • Min, Kyung-Sok (Department of Environmental Engineering, Kyungpook National University)
  • 투고 : 2008.10.29
  • 심사 : 2009.03.10
  • 발행 : 2009.03.30

초록

The advantage of simultaneous nitrification and denitrification (SND) is to reduce requirement of oxygen as well as tank volume. The fludized media was used in the oxic (aerobic) tank of Membrane-BNR to enhance the efficiency of SND. Nowadays, the interest of applying membrane to the wastewater treatment plant has been increased, which is proved by a lot of research published about the MBR. The Membrane-BNR, consisted of total 5 reactors might be called the compact process by using the fludized media and having short HRT of 6.5 hr. It could attain the further removal of not only the organics but also nutrients such as T-N and T-P. The mode A and B were identified with or without the step feed of influent. The mode A was classified with 3 modes according to the different DO concentration in the fludized media aerobic reactor, and the mode B with step feed was operated with the optimum DO condition. The step-feed was capable of improving TN removal efficiency under the domestic wastewater with the low ratio C/N. On the other hand, the efficiency of SND with the 1.0~1.5 mg/L DO in the oxic media tank was better than the one with below 1.0 mg/L, on which the nitrification did not happen enough, and with above 3.5 mg/L, on which the reduction of anoxic area in the tank happened. It means that the profitable nitrification should be performed prior to the denitrification step. The removal efficiency of nitrogen by SND was about 20% among of total denitrified nitrogen. And some organic carbon consumed could be reduced by the endogeneous denitrification.

키워드

과제정보

연구 과제 주관 기관 : 환경부

참고문헌

  1. 박종복, 최의소(2003). 다단으로 구성된 하수고도처리공정에서 원수 분배율에 따른 질소․인 제거 특성. 대한환경공학회지, 25(5), pp. 624-631
  2. 정용철, 이정열, 민경석(2008). 저농도 하수 유입 Membrane-BNR 공정내 고정상담체 호기조에서의 SND. 수질보전 한국물환경학회지, 24(3), pp. 328-332
  3. 최의소(2001). 상하수도 공학, 청문각, 서울
  4. 환경부(2006). 물순환이용체계개선에 관한 연구
  5. APHA (1998). WEF and ASCE, Standard Methods for the Examination of Water and Wastewater. 20th Eds. Washington DC. U.S.A
  6. Barker, P. S. and Dold, P. L. (1996). Denitrification Behaviour in Biological Excess Phosphorous Removal Activated Sludge Systems. Water Res., 30(4), pp. 769-780 https://doi.org/10.1016/0043-1354(95)00217-0
  7. Bortone, G., Malaspina, F., Stante, L., and Tilche, A. (1994). Biological Nitrogen and Phosphorus Removal in an Anaerobic/ Anoxic Sequencing Batch Reactor with Seperated Biofilm Nitrification. Water Sci. Techol., 30(6), pp. 303-313
  8. Halling, S. B. and Hjuler, H. (1992). Simultaneous Nitrification and Denitrification with an Upflow Fixed Bed Reactor Applying Clinoptilolite as Media. Water Treat., 7, pp. 77-88
  9. Hu, Z., Wentzel, M. C., and Ekama, G. A. (2002). Anoxic Growth of Phosphate-Accumulating Organism (PAOs) in Biological Nutrient Removal Activated Sludge Systems. Water Res., 36(19), pp. 4927-4937 https://doi.org/10.1016/S0043-1354(02)00186-0
  10. Isaacs, S. H. and Henze, M. (1995). Controlled Carbon Source Addition to an Alternating Nitrification-Denitrification Wastewater Treatment Process Including Biological P Removal. Water Res., 29(1), pp. 77-89 https://doi.org/10.1016/0043-1354(94)E0119-Q
  11. Kugleman, I. J. and Spector, M. (1988). Nutrient Removal in Staged Biological Reactors, Proceedings of the Third WPCF Joint Technical Seminar on Sewage Treatment Technology, Tokyo, Japan, pp. 4-27
  12. Kugleman, I. J., Spector, M., Harvilla, A., and Parees, D. (1991). Aerobic Denitrification in Activated Sludge. Environ, Eng., pp. 312-318
  13. Masuda, S., Watanabe, Y., and Ishiguro, M. (1991). Biofilm Properties and Simultaneous Nitrification and Denitrification in Aerobic Rotating Biological Contactors. Water Sci. Technol., 23, pp. 1355-1363
  14. Metcalf & Eddy inc., Tchobanoglous, G., Burton, F., and Stensel, H. D. (2004). Wastewater Engineering Treatment and Reuse Fourth Edition, The McGraw-Hill Companies, New York, U. S. A
  15. Munch, E. V., Lant, L., and Keller, J. (1996). Simultaneous Nitrification and Denitrification in Bench-scale Sequencing Batch Reactors. Water Res., 30(2), pp. 277-284 https://doi.org/10.1016/0043-1354(95)00174-3
  16. Pochana, K. and Keller, J. (1999). Study of Factors Affecting Simultaneous Nitrification and Denitrification (SND). Water Sci. and Technol., 39(6), pp. 61-68 https://doi.org/10.1016/S0273-1223(99)00123-7
  17. Puznava, N., Payraudeau, M., and Thornberg, D. (2001). Simultaneous Nitrification and Denitrification in Biofilters with Real-time Aeration Control. Water Sci, Technol., 43(1), pp. 269-276
  18. Tiddje, J. M. (1988). Ecology of Denitrification and Dissimilatory Nitrate Reduction to Ammonium. in Biology of Anaerobic Microorganisms, edited by A.J.B.Zehnder, John Wiley, New York, U. S. A., pp. 179-244
  19. Yang, W., Cicek, N., and Ilg, J. (2006). State-of-the-art of Membrane Bioreactors: Worldwide Research and Commercial Applications in North America. J. Membrane Sci., 270, pp. 201-211 https://doi.org/10.1016/j.memsci.2005.07.010