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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2019.3
- 수록면
- 107 - 116 (10page)
이용수
초록· 키워드
오류제보하기
Nitrogen removal, nitrous oxide (N₂O) emission and microbial community in sequencing batch and continuous-flow intermittent aeration processes were investigated. Two sequencing batch reactors (SBRs) and two continuous-flow multiple anoxic and aerobic reactors (CMRs) were operated under high dissolved oxygen (DO) (SBR-H and CMR-H) and low DO (SBR-L and CMR-L) concentrations, respectively. Nitrogen removal was enhanced under CMR and low DO conditions (CMR-L). The highest total inorganic nitrogen removal efficiency of 91.5% was achieved. Higher nitrifying and denitrifying activities in SBRs were observed. CMRs possessed higher N₂O emission factors during nitrification in the presence of organics, with the highest N₂O emission factor of 60.7% in CMR-L. SBR and low DO conditions promoted N₂O emission during denitrification. CMR systems had higher microbial diversity. Candidatus Accumulibacter, Nitrosomonadaceae and putative denitrifiers (N₂O reducers and producers) were responsible for N₂O emission.
목차
ABSTRACT
1. Introduction
2. Materials and Methods
3. Results and Discussion
4. Conclusions
References
참고문헌 (51)
참고문헌 신청
Sun Y, Guan Y, Pan M, Zhan X, Hu Z, Wu G. Enhanced biological nitrogen removal and N2O emission characteristics of the intermittent aeration activated sludge process. Rev. Environ. Sci. Bio/Technol. 2017;16:1-20.
Wang H, Guan Y, Li L, Wu G. Characteristics of biological nitrogen removal in a multiple anoxic and aerobic biological nutrient removal process. Biomed Res. Int. 2015;2015:531015.
Ge S, Peng Y, Qiu S, Zhu A, Ren N. Complete nitrogen removal from municipal wastewater via partial nitrification by appropriately alternating anoxic/aerobic conditions in a continuous plug-flow step feed process. Water Res. 2014;55: 95-105
Gilbert EM, Agrawal S, Brunner F, Schwartz T, Horn H, Lackner S. Response of different Nitrospira species to anoxic periods depends on operational DO. Environ. Sci. Technol. 2014;48:2934-2941.
Wunderlin P, Mohn J, Joss A, Emmenegger L, Siegrist H. Mechanisms of N2O production in biological wastewater treatment under nitrifying and denitrifying conditions. Water Res. 2012;46:1027-1037.
Wang H, Guan Y, Li L, Wu G. Characteristics of biological nitrogen removal in a multiple anoxic and aerobic biological nutrient removal process. Biomed Res. Int. 2015;2015:531015.
Ge S, Peng Y, Qiu S, Zhu A, Ren N. Complete nitrogen removal from municipal wastewater via partial nitrification by appropriately alternating anoxic/aerobic conditions in a continuous plug-flow step feed process. Water Res. 2014;55: 95-105
Gilbert EM, Agrawal S, Brunner F, Schwartz T, Horn H, Lackner S. Response of different Nitrospira species to anoxic periods depends on operational DO. Environ. Sci. Technol. 2014;48:2934-2941.
Wunderlin P, Mohn J, Joss A, Emmenegger L, Siegrist H. Mechanisms of N2O production in biological wastewater treatment under nitrifying and denitrifying conditions. Water Res. 2012;46:1027-1037.
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UCI(KEPA) : I410-ECN-0101-2019-539-000032843