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An airlift transverse internal loop reactor (ATIR) was operated for the treatment of synthetic municipalwastewater. The nitrogen removal performance and internal recycle ratio of the ATIR with four different ratios of the cross-sectional areas of the downcomer to the riser (Ad/Ar) were investigated. The results indicated that the ATIR achieved high internal recycle ratio (52~176) by utilizing aeration kinetic energy. The efficient nitrogen removal was obtained at an Ad/Ar of 1:1.5 and a hydraulic retention time (HRT) of 9h, with the effluent total nitrogen of (8.12 ± 1.21) mg/L. Compared to the conventional internal recycle mode, the ATIR at this Ad/Ar demonstrated a 27.5% reduction in aeration rate. Furthermore, the ratio of specific nitrite utilization rate to specific ammonia utilization rate decreased from 1.31 to 0.95 and the abundance of nitrite-oxidizing bacteria (NOB-Nitrospira) decreased from 3.66% to 0.88%. Meanwhile, the simultaneous nitrification-denitrification efficiency increased to 26.77%, and the contribution of partial nitrification and denitrification to nitrogen removal corresponding increased to 16.71%. These indicate that spontaneous nitrite-oxidizing bacteria washout in the ATIR had occurred and the nitrogen removal pathway at an Ad/Ar of 1.5 tends towards simultaneous partial nitrification and denitrification.

, authors=Chi LIAO1, Li-fang YU1, *, Wan CAO2, Rui JIANG1, Bu-feng DAI2, Dang-cong PENG1, authorsList=Chi LIAO, Li-fang YU, Wan CAO, Rui JIANG, Bu-feng DAI, Dang-cong PENG, authorCompany=null, correspAuthors=Li-fang YU, 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=1314918397205373718, articleId=1314918396769166100, tenantId=1146029695717560320, journalId=1234093305789726721, language=CN, title=Ad/Ar对曝气动力横向内循环反应器中混合液内循环比及脱氮性能影响研究, columnId=1234106386565624579, journalTitle=中国环境科学, columnName=水污染与控制, runingTitle=null, highlight=null, articleAbstract=

采用一种新型曝气动力横向内循环反应器(ATIR)进行模拟城市污水生物脱氮研究,考察4种不同的下降区/上升区过流断面比值(Ad/Ar)对ATIR混合液内循环比与脱氮性能的影响.结果表明,ATIR利用曝气动能可以实现高内循环比(52~176).在Ad/Ar为1:1.5,HRT为9h时,出水总氮为(8.12 ± 1.21)mg/L.与常规内循环模式相比,ATIR在此Ad/Ar时曝气量降低了27.5%,亚硝酸盐氧化速率/氨氧化速率由1.31降至0.95,亚硝酸盐氧化菌(NOB)-Nitrospira丰度由3.66%降至0.88%.而且,此时ATIR同步硝化反硝化率达到(26.77 ± 2.36)%,短程硝化反硝化脱氮贡献率达16.71%.由此可见,ATIR在Ad/Ar为1:1.5时具有淘汰NOB潜力,且脱氮途径趋向于同步短程硝化反硝化.

, authors=廖驰1, 于莉芳1, *, 曹皖2, 蒋睿1, 戴步峰2, 彭党聪1, authorsList=廖驰, 于莉芳, 曹皖, 蒋睿, 戴步峰, 彭党聪, authorCompany=null, correspAuthors=于莉芳, authorNote=

廖驰(1999-),男,四川德阳人,西安建筑科技大学硕士研究生,主要从事污/废水生物处理研究.发表论文1篇..

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廖驰(1999-),男,四川德阳人,西安建筑科技大学硕士研究生,主要从事污/废水生物处理研究.发表论文1篇..

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廖驰(1999-),男,四川德阳人,西安建筑科技大学硕士研究生,主要从事污/废水生物处理研究.发表论文1篇..

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Ad/Ar对曝气动力横向内循环反应器中混合液内循环比及脱氮性能影响研究
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廖驰 1 , 于莉芳 1, * , 曹皖 2 , 蒋睿 1 , 戴步峰 2 , 彭党聪 1
中国环境科学 | 水污染与控制 2025,45(11): 6137-6145
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中国环境科学 |水污染与控制 2025 , 45 (11) : 6137 -6145
Ad/Ar对曝气动力横向内循环反应器中混合液内循环比及脱氮性能影响研究
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廖驰(1999-),男,四川德阳人,西安建筑科技大学硕士研究生,主要从事污/废水生物处理研究.发表论文1篇..

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廖驰(1999-),男,四川德阳人,西安建筑科技大学硕士研究生,主要从事污/废水生物处理研究.发表论文1篇..

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710055)])])]
廖驰1 , 于莉芳1, * , 曹皖2, 蒋睿1, 戴步峰2, 彭党聪1
作者信息
  • 1.西安建筑科技大学环境与市政工程学院,陕西 西安 710055
  • 2.南京市市政设计研究院有限责任公司,江苏 南京 210008
通讯作者:
* 责任作者,副教授,
作者简介:

廖驰(1999-),男,四川德阳人,西安建筑科技大学硕士研究生,主要从事污/废水生物处理研究.发表论文1篇..

Effect of Ad/Ar on internal recycle ratioofmixed liquor and nitrogen removal performance in an airlift transverse internal loop reactor
Chi LIAO1 , Li-fang YU1, * , Wan CAO2, Rui JIANG1, Bu-feng DAI2, Dang-cong PENG1
Affiliations
  • 1.School of Environmental and Municipal Engineering, Xi’an University of Architecture and Technology, XiXan 710055, China
  • 2.Nanjing Municipal Design and Research Institute Co., Ltd, Nanjing 210008, China
出版时间: 2025-11-20
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采用一种新型曝气动力横向内循环反应器(ATIR)进行模拟城市污水生物脱氮研究,考察4种不同的下降区/上升区过流断面比值(Ad/Ar)对ATIR混合液内循环比与脱氮性能的影响.结果表明,ATIR利用曝气动能可以实现高内循环比(52~176).在Ad/Ar为1:1.5,HRT为9h时,出水总氮为(8.12 ± 1.21)mg/L.与常规内循环模式相比,ATIR在此Ad/Ar时曝气量降低了27.5%,亚硝酸盐氧化速率/氨氧化速率由1.31降至0.95,亚硝酸盐氧化菌(NOB)-Nitrospira丰度由3.66%降至0.88%.而且,此时ATIR同步硝化反硝化率达到(26.77 ± 2.36)%,短程硝化反硝化脱氮贡献率达16.71%.由此可见,ATIR在Ad/Ar为1:1.5时具有淘汰NOB潜力,且脱氮途径趋向于同步短程硝化反硝化.

横向内循环  /  高内循环比  /  亚硝酸盐  /  亚硝酸盐氧化菌  /  同步短程硝化反硝化

An airlift transverse internal loop reactor (ATIR) was operated for the treatment of synthetic municipalwastewater. The nitrogen removal performance and internal recycle ratio of the ATIR with four different ratios of the cross-sectional areas of the downcomer to the riser (Ad/Ar) were investigated. The results indicated that the ATIR achieved high internal recycle ratio (52~176) by utilizing aeration kinetic energy. The efficient nitrogen removal was obtained at an Ad/Ar of 1:1.5 and a hydraulic retention time (HRT) of 9h, with the effluent total nitrogen of (8.12 ± 1.21) mg/L. Compared to the conventional internal recycle mode, the ATIR at this Ad/Ar demonstrated a 27.5% reduction in aeration rate. Furthermore, the ratio of specific nitrite utilization rate to specific ammonia utilization rate decreased from 1.31 to 0.95 and the abundance of nitrite-oxidizing bacteria (NOB-Nitrospira) decreased from 3.66% to 0.88%. Meanwhile, the simultaneous nitrification-denitrification efficiency increased to 26.77%, and the contribution of partial nitrification and denitrification to nitrogen removal corresponding increased to 16.71%. These indicate that spontaneous nitrite-oxidizing bacteria washout in the ATIR had occurred and the nitrogen removal pathway at an Ad/Ar of 1.5 tends towards simultaneous partial nitrification and denitrification.

transverse internal loop  /  high internal recycle ratio  /  nitrite  /  NOB  /  simultaneous partial nitrification and denitrification
廖驰, 于莉芳, 曹皖, 蒋睿, 戴步峰, 彭党聪. Ad/Ar对曝气动力横向内循环反应器中混合液内循环比及脱氮性能影响研究. 中国环境科学, 2025 , 45 (11) : 6137 -6145 .
Chi LIAO, Li-fang YU, Wan CAO, Rui JIANG, Bu-feng DAI, Dang-cong PENG. Effect of Ad/Ar on internal recycle ratioofmixed liquor and nitrogen removal performance in an airlift transverse internal loop reactor[J]. China Environmental Science, 2025 , 45 (11) : 6137 -6145 .
  • 陕西省重点研发计划项目(2023-YBSF-314)
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  • 接收时间:2025-04-09
  • 首发时间:2026-10-08
  • 出版时间:2025-11-20
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  • 收稿日期:2025-04-09
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陕西省重点研发计划项目(2023-YBSF-314)
作者信息
    1.西安建筑科技大学环境与市政工程学院,陕西 西安 710055
    2.南京市市政设计研究院有限责任公司,江苏 南京 210008

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2种不同金属材料的力学参数
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species
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属
Genus
种数
Number of
species
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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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