Enhancing autotrophic nitrogen removal with a novel dissolved oxygen-differentiated airlift internal circulation reactor: Long-term operational performance and microbial characteristics

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成果类型：

期刊论文

作者：

Wang, Hong;Yu, Guanlong;He, Weining;Du, Chunyan;Deng, Zhengyu;...

通讯作者：

Hong Chen

作者机构：

[Du, Chunyan; Yang, Min; Wang, Hong; Chen, Hong; Yang, Enzhe; Yu, Guanlong] Changsha Univ Sci & Technol, Key Lab Water Sediment Sci & Water Disaster Preve, Sch Hydraul Engn, Changsha 410004, Peoples R China.

[Wang, Hong; Chen, Hong] Tohoku Univ, Grad Sch Engn, Dept Civil & Environm Engn, Sendai, Miyagi 9808579, Japan.

[Deng, Zhengyu; He, Weining] China Machinery Int Engn Design & Res Inst Co Ltd, Changsha 410007, Peoples R China.

[Wang, Dongbo] Hunan Univ, Coll Environm Sci & Engn, Changsha 410082, Peoples R China.

[Zhou, Yaoyu] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Peoples R China.

通讯机构：

[Hong Chen] K

Key Laboratory of Water-Sediment Sciences and Water Disaster Prevention of Hunan Province, School of Hydraulic Engineering, Changsha University of Science & Technology, Changsha, 410004, China<&wdkj&>Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, Sendai, 980-8579, Japan

语种：

英文

关键词：

Anammox;Autotrophic nitrogen removal;Dissolved oxygen;Micro-granules;Partition control

期刊：

Journal of Environmental Management

ISSN：

0301-4797

年：

2021

卷：

296

页码：

113271

DOI：

10.1016/j.jenvman.2021.113271

基金类别：

China Hunan Provincial Science & Technology Department [2020JJ4602, 2017SK2361]; Hunan Provincial Department of Education [20A002]; Ecology and Environment Depart-ment of Hunan [2020HK37]; Changsha Bureau of Science and Technology [kq2004073]

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院系归属：

资源环境学院

摘要：

Autotrophic nitrogen removal (ANR) processes have not been widely applied in wastewater treatment due to their long start-up time and unstable performance. In this study, a novel dissolved oxygen-differentiated airlift internal circulation reactor was developed to enhance ANR from wastewater. During 200 days of continuous operation, the reactor start-up was achieved within 30 days; a high total nitrogen removal efficiency of 80% was achieved and stably maintained under an aeration rate of 0.90L/min and hydraulic retention time of 6h. Additionally, the color of sludge went from a light yellow t...

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Enhancing autotrophic nitrogen removal with a novel dissolved oxygen-differentiated airlift internal circulation reactor: Long-term operational performance and microbial characteristics

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