Nutrients removal and microbial activity for A2O Process Using Activated Sludge Models

활성슬러지 모델을 이용한 A2O공법 영양염류 제거 및 미생물 거동

  • 윤현식 (한국환경공단 수계관리처) ;
  • 김덕진 (한국환경공단 토양지하수처) ;
  • 최봉호 (한양대학교 건설환경공학과) ;
  • 김문일 (한양대학교 건설환경공학과)
  • Received : 2012.07.02
  • Accepted : 2012.12.12
  • Published : 2012.12.15


In this study, simulation results of nitrogen and phosphorus removals and microbial activities for an $A_2O$ process in wastewater treatment plant are presented by using Activated Sludge Models (ASMs). Simulations were performed using pre-calibrated model and layout implemented in GPS-X simulation software. The models were used to investigate variations of SRT, water temperature, DO and C/N ratio effect on nutrients removal and microbial activity. According to the simulated results, the successful nitrification required SRT higher than 10.3 days, whereas increase of $NO_3$-N loading in the anaerobic reactor caused phosphorus release by PAOs; the effluent $NH_4$-N showed rapid change between $12^{\circ}C$(21.7 mg/L) and $13^{\circ}C$(3.2 mg/L); the effluent phosphorus was increased up to 1.9 mg/L at water temperature of $25^{\circ}C$; the DO increase was positive for heterotrophs and autotrophs growths but negative for PAOs growth; the PAOs showed low activity when C/N ratio was lower than 2.5. The experimental results indicated that the calibrated models can assure the prediction quality of the ASMs and can be used to optimize the $A_2O$ process.


  1. 이성학, 박종복, 고주형, 임정훈, 우혜진, 김창원 (2004) 변형 생물학적 고도처리공정에서 ASM2d를 이용한 민감도 분석 및 온도/SRT 영향 평가, 대한환경공학회지, 26(1), pp. 83-88.
  2. 김민정, 김민한, 김용수, 유창규 (2008) 하수처리장의 고도처리 upgrading 설계와 공정 최적화를 위한 다변량 통계분석, 한국화학공학회, 48(5), pp. 589-597.
  3. 이영대, 최용수, 신응배 (1993) 생물학적 질소, 인 제거 신공정, 93년 환경종합 학술대회, 대한환경공학회, pp. 85-88.
  4. 홍지혜 (2004) 활성슬러지공정과 고도처리공정에 따른 하수처리수의 처리효율과 유기물 특성, 상하수도학회지, 18(6), pp. 807-813.
  5. APHA, AWWA, WEF (2005) Standard Methods for the examination of water and wastewater, 21st edition., APHA, Washington D.C.
  6. Gernaey, K.V., van Loosdrecht, M.C.M., Henze, M., Lind, M. and Jorgensen, S.B. (2004) Activated sludge wastewater treatment plant modelling and simulation: state of the art, Environ. Modell. Softw., 19(9), pp. 763-793.
  7. Glen, T .D. and Steven, R.P. (1994) Design and operation of biological phosphorus removal facilities, Principles and practice of phosphorus and nitrogen removal from municipal wastewater, 2nd Edition, pp. 145-174, CRC-Press, New York.
  8. Henze, G., Gujer, W., Mino, T. and van Loosdrecht M. (2000) Activated sludge models: ASM1, ASM2, ASM2d and ASM3, pp. 39-75, IWA publishing, London.
  9. Hydromantis, Inc. (2004)GPS-X Tutorial Guide, Hydromantis.
  10. Hulsbeek, J.J.W., Kruit, J., Roeleveld, P.J. and van Loosdrecht M.C.M. (2002) A practical protocol for dynamic modelling of activated sludge systems, Water Sci. Technol., 45(6), pp. 127-136.
  11. Lai, T. M., Dang, H.V., Nguyen, D.D., Yim, S. and Hur, J. (2011) Wastewater treatment using a modified $A_2O$ process based on fiber polypropylene media, J. Environ. Sci. Health. Part A Toxic/Hazard. Subst. Environ. Eng., 46(10), pp. 1068-1074.
  12. Tchobanoglous, G., Burton, F.L. and David Stensel H. (2003) Wastewater Engineering Treatment and Reuse, (fourth ed.), McGraw Hill publication, New York, USA.
  13. Wong, M.T., Mino, T., Seviour, J.R., Onuki, M. and Liu, W.T. (2005) In situ identification and characterization of the microbial community structure of full-scale enhanced biological phosphorous removal plants in Japan, Water Res., 39, pp. 2901-2014.

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