Journal of Korean Society of Water and Wastewater (상하수도학회지)

The Korean Society of Water and Wastewater (대한상하수도학회)
권호 표지

Effects of Operational Condition on N2O Production from Biological Nitrogen Removal Process

생물학적 질소제거시 운전조건의 변화가 N2O 발생에 미치는 영향

  • 장현섭 ((주) 엑센) ;
  • 김태형 (경희대학교 건설환경공학부 및 환경연구센터) ;
  • 이명주 (경희대학교 건설환경공학부 및 환경연구센터) ;
  • 황선진 (경희대학교 건설환경공학부 및 환경연구센터)
  • Received : 2009.04.21
  • Accepted : 2009.09.28
  • Published : 2009.10.15
Download PDF
⟨ Previous Next ⟩

Abstract

The objectives of this research were focused on the effects of various operating parameters on nitrous oxide emission such as C/N ratio, ammonia concentration and HRT in the hybrid and suspension reactors. With the decreasing of C/N ratios, $N_2O$ emission rates in the both processes were increased because organic carbon source for denitrification was depleted. In case of biofilm reactor operated using medium, $N_2O$ release from the nitrification was not affected by the variation of ammonia concentration. But in the suspension reactor, $N_2O$ production from the nitrification was rapidly increased with the increase of ammonia. Nitrite accumulation caused by undesirable nitrification conditions could be a important reason for the increase in the $N_2O$ production from the aerobic reactor. And rapid increase in $N_2O$ production was reflected by the decrease of HRT, similar to the results observed in the results of ammonia loading changes. So it could be said that it is very important to put in consideration both its optimum conditions for wastewater treatment efficiency and suitable conditions for $N_2O$ diminish, simultaneously, in order to development an eco-friendly and advanced wastewater treatment, especially in BNR process.

Keywords

Acknowledgement

Supported by : 경희대학교

References

  1. Barbara Schonharting, Ruxandra Rehner, Jorg W. Metzger, Karlheinz Krauth and Manfred Rizzi (1998) Release of nitrous oxide ($N_{2}O$) from denitrifying activated sludge caused by H2S-containing wastewater: quantification and application of a new mathematical model, Water Science and Technology, 38, pp.237-246 https://doi.org/10.1016/S0273-1223(98)00409-0
  2. Benckiser G., Eilts R., Linn A., Lorch Hj., Somer E., Weiske A. and Wenzhofer F. (1996) $N_{2}O$ emissions from different cropping systems and from aerated nitrifying and denitrifying tanks of a municipal waste water treatment plant, Biol. Fertil. Soild, 23, pp.257-265 https://doi.org/10.1007/BF00335953
  3. Chiu Y. C., Chung M. S. (2003) Determination of optimal COD/nitrate ratio for biological denitrification, International Biodeterioration & Biodegradation, 51, 43-4 https://doi.org/10.1016/S0964-8305(02)00074-4
  4. Focht, D. D., and Chang, A. C. (1975) Nitrification and Denitrification Process related to Waste water Treatment, Adv. Appl. Micribiol., 20, pp.631-644 https://doi.org/10.1016/S0065-2164(08)70428-3
  5. Granli, T.m and Bockman, O. C. (1994) Nitrous oxide from agriculture. J. Agriculture Science. pp.7-47
  6. Hanaki K.. Hong Z. and Matsuo T. (1992) Production of nitrous oxide gas during denitrification of wastewater, Wat. Sci. Thechol., 26, pp.1027-1036
  7. Hasegawa K., Hanaki K., Mastuo T., Hidaka S. (2000) Nitrous oxide from the agriculture water system contaminated with high nitrogen, Chemosphere-Global Change Science, 2, pp.335-345 https://doi.org/10.1016/S1465-9972(00)00009-X
  8. 133-141Hong Z., Hanaki K. and Matsuo T., (1994) Production of nitrous oxide gas during nitrification of wastewater, Wat. Sci. Tech., 30, pp.133-141
  9. Hwang S, Jang K, Jang H, Song J, and Bae W., (2006) Factors affecting nitrous oxide production: a comparison of biological nitrogen removal processes with partial and complete nitrification' Biodegradation, 17, pp.19-29 https://doi.org/10.1007/s10532-005-2701-9
  10. IPCC (1990) Houghton, J. T., Jenkins, G. J., Ephraums, J.J.(Eds.),, Climate Change: The IPCC Scientific Assessment. Cambridge University press, Cambridge
  11. IPCC (1995) Houghton, J. T., Jenkins, G. J., Ephraums, J.J.(Eds.),, Climate Change: The Science of Climate Change. Cambridge University press, Cambridge
  12. Itokawa H, Hanaki, K and Matsuo, T. (1996) Nitrous oxide emission during nitrification and denitrification in a full-scale night soil treatment plant, Wat. Sci. Tech., 34, pp. 277-284 https://doi.org/10.1016/0273-1223(96)00542-2
  13. Itokawa, H., Hanaki, K., Matsuo, T. (2001) Nitrous oxide production in high-loading biological nitrogen removal process under low COD/N ratio condition, Water Res., 35(3), pp.657-664 https://doi.org/10.1016/S0043-1354(00)00309-2
  14. Poon K. F., Raymond W.H.W., Michael H.W.L., Yeung H.Y. and Tony K. T. C. (1996) A model for predicting nitrous oxide production during denitrification in activated sludge,' Water Science and Technology, 34, pp.99-106
  15. Schulthess van R & Gujer W. (1996) Release of nitrous oxide ($N_{2}O$) from denitrifying activated sludge: verification and application of a mathematical model. Water Res., 30, pp.521-530 https://doi.org/10.1016/0043-1354(95)00204-9
  16. Standard Methods for the Examination of water and Wastewater, 20th edn (1998) American Public Health Association/American Water Works Association/Water Environment Federation, Washington DC, USA
  17. Wrage N., Velthof G. L., Beusichem M. L., and Oenema O. (2001) Role of nitrifier denitrification in the production of nitrous oxide, Soil Bio. and Biochemistry, 33, pp.1723-1732 https://doi.org/10.1016/S0038-0717(01)00096-7
  18. Wrage N, Velthof G. L., Laanbroek H. J. & Oenema O. (2004) Nitrous oxide production in grassland soils: assessing the contribution of nitrifier denitrification, Soil Biol. Biochem., 36, pp.229-236 https://doi.org/10.1016/j.soilbio.2003.09.009