상하수도학회지 (Journal of Korean Society of Water and Wastewater)

  • 제26권5호
  • /
  • Pages.619-627
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  • 2012
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  • 1225-7672(pISSN)
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  • 2287-822X(eISSN)
대한상하수도학회 (The Korean Society of Water and Wastewater)
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MLE공법과 황이용 탈질 프로세스의 전과정 탄소 배출량 평가

Life Cycle Assessment of the Carbon Emissions of MLE process and Denitrification Process Using Granular Sulfur

  • 발행 : 2012.10.15
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초록

In order to determine reduction of greenhouse gas emissions (GHGs) when the submerged membrane bioreactor with granular sulfur (MBR-GS) is used in wastewater treatment plant (WTP), the amount of GHGs was compared and analyzed in the advanced treatment process of P wastewater treatment plant (WTP). The amount of GHGs was estimated by classifying as construction and operation phase in WTP. The amount of GHGs in construction phase was evaluated from multiplying raw materials by using carbon emission factors. Also the amount of GHGs in operating phase was calculated by using total electricity consumption and carbon emission factor. The construction of anoxic tank and secondary settling tank is unnecessary, because the MBR-GS conducts simultaneously the nitrification and denitrification in aeration tank and filtration by hollow fiber membrane. The amount of $CO_2$, $CH_4$, and $N_2O$ emitted by constructing the MBR-GS was 6.44E+06 kg, 8.16E+03 kg and 1.38E+01 kg, respectively. The result shows that the GHGs was reduced about 47 % as compared with the construction in the MLE process. In operating the MBR-GS, the electricity is not required in the biological reactor and secondary setting tank. Thus, the amount of $CO_2$, $CH_4$, and $N_2O$ emitted by operating in the MBR-GS was 7.39E+05 kg/yr, 5.80E+02 kg/yr and 2.44E+00 kg/yr, respectively. The result shows that the GHGs were reduced about 37 % as compared with the operation in the MLE process. Also, $LCCO_2$(Life Cycle $CO_2$) was compared and analyzed between MLE process and MBR-GS. The amount of $LCCO_2 $emitted from the MLE process and MBR-GS was 3.56E+04 ton $CO_2$ and 2.12E+04 ton $CO_2$, respectively. The result shows that the GHGs in MBR-GS were reduced to about 40 % as compared in the MLE process during life cycle. As a result, sulfur-utilizing autotrophic denitrification process (SADP) is expected to be utilized as the cost-effective advanced treatment process, owing to not only high nitrogen removal efficiency but also the GHGs reduction in construction and operation stage.

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참고문헌

  1. 양형재, 박정민, 김민정, "하수처리 공정별 아산화질소($N_{2}O$) 배출계수 산정", 대한환경공학회, 30(12), 1281 - 1286(2008).
  2. 김정숙, 김시준, 稻森悠平, "Alcaligenes faecalis에 의한 질소제거 특성과 $N_{2}O$제어를 위한 유동층공법의 적용가능성", 대한환경공학회지, 23(8) 1295-1303(2001).
  3. Prendez., M., Lara-Gonzalez, S., "Application of strategies for sanitation management in wastewater treatment plants in order to control/reduce greenhouse gas emission", J. Environmental Management, 88, 658 - 664(2008). https://doi.org/10.1016/j.jenvman.2007.03.041
  4. Rittman , B.E., and McCarty, P.L, Environmental Biotechnology : Principal and Applications, McGraw-Hill, (2002).
  5. 환경부, 환경관리공단, 국가 온실가스 인벤토리 작성을 위한 2006 IPCC 가이드라인(2008).
  6. Kampschreur, M.J., van der Star, W.R.L., Wielders, H.A., Muder, J.W., Jetten, M.S.M., van Loosdrecht, M.C.M., "Dynamics of nitric oxide and nitrous oxide emission during full-scale reject water treatment", Wat. Res., 42, 812 - 826(2008). https://doi.org/10.1016/j.watres.2007.08.022
  7. Tallec, G., Garnier, J., Billen, G., Gousailles, M., "Nitrous oxide emissions from secondary activated sludge in nitrifying conditions of urban wastewater treatment plants: effect of oxygenation level", Wat. Res., 40(15), 2972 - 2980(2006). https://doi.org/10.1016/j.watres.2006.05.037
  8. 한국환경산업기술원, 국가 LCI 데이터베이스 정보망, http://www.edp.or.kr/
  9. 포스코건설, "판교 하수처리장 고도처리 시설공사", 기본설계보고서(2006).
  10. 환경관리공단, "기후변화에 대비한 공공하수도시설 에너지 자립화 타당성 조사 연구", 최종보고서(2008).