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To precisely control the denitrification process such that NO3--N is reduced solely to NO2--N without further reduction to N2, short-term aeration was implemented to enhance the nitrate-to-nitrite transformation ratio (NTR) of denitrifying phosphorus-accumulating organisms (DPAOs). The results demonstrated that after aeration intensification, phosphorus removal efficiency in the reactor improved (from 84.62% to 88.34%). When aeration durations were set at 5, 10, and 15minutes, the NTR values reached 36.09%, 89.14%, and 91.86%, respectively. However, extending aeration to 20minutes resulted in elevated effluent nitrate concentrations (10.11mg/L). As aeration duration increased, the content of pre-anoxic electron donors (PHBs) gradually diminished, which was identified as the primary reason for nitrite accumulation. Furthermore, aeration induced an increase in the relative abundance of DPAOs while decreasing that of endogenous denitrifying glycogen-accumulating organisms (DGAOs). Based on the outcomes of the partial denitrification coupled with phosphorus removal (PDPR) process, the feasibility of implementing the N-PDPR-Anammox process in practical engineering applications was discussed.

, authors=Dong LI1, *, Heng-kang LYU1, Yi-feng CAI1, Ke-huan GUO1, Jie ZHANG1, 2, authorsList=Dong LI, Heng-kang LYU, Yi-feng CAI, Ke-huan GUO, Jie ZHANG, authorCompany=null, correspAuthors=Dong LI, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1314917529408077914, articleId=1314917528774738008, tenantId=1146029695717560320, journalId=1234093305789726721, language=CN, title=短时曝气对反硝化除磷中亚硝酸盐积累的影响, columnId=1234106386565624579, journalTitle=中国环境科学, columnName=水污染与控制, runingTitle=null, highlight=null, articleAbstract=

为精确控制反硝化过程中NO3--N只被还原为NO2--N,而不进一步还原为N2,通过短时曝气来提高反硝化聚磷菌(DPAOs)的亚硝酸盐积累率(NTR).结果表明,增加曝气后,反应器的除磷效果有所提升(从84.62%上升至88.34%).当曝气时间分别为5,10和15min时,NTR分别为36.09%,89.14%和91.86%,但当曝气时间延长至20min,出水硝酸盐浓度升高(10.11mg/L).随着曝气时间的增加,缺氧前电子供体(PHBs)含量逐渐减少,这是亚硝酸盐积累的主要原因.此外,曝气还导致DPAOs菌属的丰度上升,而内源反硝化菌(DGAOs)菌属的丰度则有所下降.基于PDPR的成果,讨论了N-PDPR-Anammox工艺在实际工程中应用的可行性.

, authors=李冬1, *, 吕恒康1, 蔡奕锋1, 郭可欢1, 张杰1, 2, authorsList=李冬, 吕恒康, 蔡奕锋, 郭可欢, 张杰, authorCompany=null, correspAuthors=李冬, authorNote=

李冬(1976-),女,辽宁丹东人,教授,博士,主要研究方向为水环境恢复及关键技术.发表论文200余篇..

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李冬(1976-),女,辽宁丹东人,教授,博士,主要研究方向为水环境恢复及关键技术.发表论文200余篇..

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李冬(1976-),女,辽宁丹东人,教授,博士,主要研究方向为水环境恢复及关键技术.发表论文200余篇..

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短时曝气对反硝化除磷中亚硝酸盐积累的影响
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李冬 1, * , 吕恒康 1 , 蔡奕锋 1 , 郭可欢 1 , 张杰 1, 2
中国环境科学 | 水污染与控制 2025,45(7): 3704-3713
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中国环境科学 |水污染与控制 2025 , 45 (7) : 3704 -3713
短时曝气对反硝化除磷中亚硝酸盐积累的影响
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李冬(1976-),女,辽宁丹东人,教授,博士,主要研究方向为水环境恢复及关键技术.发表论文200余篇..

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李冬1, * , 吕恒康1, 蔡奕锋1, 郭可欢1, 张杰1, 2
作者信息
  • 1.北京工业大学,水质科学与水环境恢复工程北京市重点实验室,北京 100124
  • 2.哈尔滨工业大学,城市水资源与水环境国家重点实验室,黑龙江 哈尔滨 150090
通讯作者:
* 责任作者,教授,
作者简介:

李冬(1976-),女,辽宁丹东人,教授,博士,主要研究方向为水环境恢复及关键技术.发表论文200余篇..

The influence of short-term aeration on the accumulation of nitrite in denitrification phosphorus removal
Dong LI1, * , Heng-kang LYU1, Yi-feng CAI1, Ke-huan GUO1, Jie ZHANG1, 2
Affiliations
  • 1.Beijing Key Laboratory of Water Quality Science and Water Environment Restoration Engineering, Beijing University of Technology, Beijing 100124, China
  • 2.State Key Laboratory of Urban Water Resource and Environment, Harbin University of Technology, Harbin 150090, China
出版时间: 2025-07-20
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为精确控制反硝化过程中NO3--N只被还原为NO2--N,而不进一步还原为N2,通过短时曝气来提高反硝化聚磷菌(DPAOs)的亚硝酸盐积累率(NTR).结果表明,增加曝气后,反应器的除磷效果有所提升(从84.62%上升至88.34%).当曝气时间分别为5,10和15min时,NTR分别为36.09%,89.14%和91.86%,但当曝气时间延长至20min,出水硝酸盐浓度升高(10.11mg/L).随着曝气时间的增加,缺氧前电子供体(PHBs)含量逐渐减少,这是亚硝酸盐积累的主要原因.此外,曝气还导致DPAOs菌属的丰度上升,而内源反硝化菌(DGAOs)菌属的丰度则有所下降.基于PDPR的成果,讨论了N-PDPR-Anammox工艺在实际工程中应用的可行性.

部分反硝化聚磷  /  曝气  /  电子供体  /  内碳源

To precisely control the denitrification process such that NO3--N is reduced solely to NO2--N without further reduction to N2, short-term aeration was implemented to enhance the nitrate-to-nitrite transformation ratio (NTR) of denitrifying phosphorus-accumulating organisms (DPAOs). The results demonstrated that after aeration intensification, phosphorus removal efficiency in the reactor improved (from 84.62% to 88.34%). When aeration durations were set at 5, 10, and 15minutes, the NTR values reached 36.09%, 89.14%, and 91.86%, respectively. However, extending aeration to 20minutes resulted in elevated effluent nitrate concentrations (10.11mg/L). As aeration duration increased, the content of pre-anoxic electron donors (PHBs) gradually diminished, which was identified as the primary reason for nitrite accumulation. Furthermore, aeration induced an increase in the relative abundance of DPAOs while decreasing that of endogenous denitrifying glycogen-accumulating organisms (DGAOs). Based on the outcomes of the partial denitrification coupled with phosphorus removal (PDPR) process, the feasibility of implementing the N-PDPR-Anammox process in practical engineering applications was discussed.

partial denitrification-phosphorus removal  /  short-term aeration  /  electron donor  /  internal carbon source
李冬, 吕恒康, 蔡奕锋, 郭可欢, 张杰. 短时曝气对反硝化除磷中亚硝酸盐积累的影响. 中国环境科学, 2025 , 45 (7) : 3704 -3713 .
Dong LI, Heng-kang LYU, Yi-feng CAI, Ke-huan GUO, Jie ZHANG. The influence of short-term aeration on the accumulation of nitrite in denitrification phosphorus removal[J]. China Environmental Science, 2025 , 45 (7) : 3704 -3713 .
  • 北京高校卓越青年科学家计划项目(BJJWZYJH01201910005019)
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  • 接收时间:2024-12-13
  • 首发时间:2026-10-08
  • 出版时间:2025-07-20
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  • 收稿日期:2024-12-13
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北京高校卓越青年科学家计划项目(BJJWZYJH01201910005019)
作者信息
    1.北京工业大学,水质科学与水环境恢复工程北京市重点实验室,北京 100124
    2.哈尔滨工业大学,城市水资源与水环境国家重点实验室,黑龙江 哈尔滨 150090

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2种不同金属材料的力学参数
科
Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)
属
Genus
种数
Number of
species
占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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