Evaluating the effects of micro-zones of granular sludge on one-stage partial nitritation-anammox nitrogen removal
文献类型：期刊论文
| 作者 | Li, Hanxiang1; Wang, Shuai1; Zhao, Fan1; Fang, Fang1; Chen, Youpeng1; Yan, Peng1 ; Yang, Jixiang1,2; Gu, Shujun1; Guo, Jinsong1
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| 刊名 | BIOPROCESS AND BIOSYSTEMS ENGINEERING
 |
| 出版日期 | 2020-02-04 |
| 页码 | 13 |
| 关键词 | Micro-zone One stage Partial nitritation Anammox Granular sludge |
| ISSN号 | 1615-7591 |
| DOI | 10.1007/s00449-020-02302-y |
| 通讯作者 | Fang, Fang(fangfangcq@cqu.edu.cn) |
| 英文摘要 | The one-stage partial nitritation-anammox (PN-A) process is considered an efficient process for low-cost nitrogen removal. In this study, the nitrogen removal performance of different-sized granules in a one-stage PN-A reactor was studied. The total autotrophic nitrogen removal rate (TANRR) of the granular sludge increased as the granule size increased, and the TANRR of granular sludge with a radius larger than 500 mu m reached 0.14 kgN kgVSS(-1) d(-1). High-throughput sequencing revealed that the abundance of ammonium-oxidizing bacteria and anaerobic ammonium-oxidizing (anammox) bacteria in granular sludge of different sizes differed, indicating that the bacterial community structure was affected by the granule size. The TANRR of different-sized granules was affected by the volumes of aerobic micro-zone and anaerobic micro-zone inside the granule. Appropriate micro-zone volumes inside the granules could be regulated by the dissolved oxygen (DO) concentration of the reactor, which are favourable for achieving a balance between partial nitritation and anammox and then satisfactory nitrogen removal. Small-volume variations in the range of micro-zones have a significant influence on the balance between partial nitritation and anammox. The proper DO concentration required for different-sized granules to achieve better nitrogen removal differed. This study provides a novel perspective for understanding the effect of micro-zones of granular sludge on one-stage PN-A nitrogen removal. |
| 资助项目 | National Natural Science Foundation of China[51878091] ; National Natural Science Foundation of China[21876016] ; National Key Research and Development Program of China[2019YFD1100501] ; Chongqing Science and Technology Commission[cstc2018jcyjAX0610] |
| WOS研究方向 | Biotechnology & Applied Microbiology ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000511050300002 |
| 出版者 | SPRINGER |
| 源URL | [http://119.78.100.138/handle/2HOD01W0/10403]  |
| 专题 | 中国科学院重庆绿色智能技术研究院 |
| 通讯作者 | Fang, Fang |
| 作者单位 | 1.Chongqing Univ, Coll Environm & Ecol, 174 Shazhengjie, Chongqing 400045, Peoples R China 2.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, 266 Fangzheng Ave,Shuitu Hitech Ind Pk, Chongqing 400714, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Hanxiang,Wang, Shuai,Zhao, Fan,et al. Evaluating the effects of micro-zones of granular sludge on one-stage partial nitritation-anammox nitrogen removal[J]. BIOPROCESS AND BIOSYSTEMS ENGINEERING,2020:13. |
| APA | Li, Hanxiang.,Wang, Shuai.,Zhao, Fan.,Fang, Fang.,Chen, Youpeng.,...&Guo, Jinsong.(2020).Evaluating the effects of micro-zones of granular sludge on one-stage partial nitritation-anammox nitrogen removal.BIOPROCESS AND BIOSYSTEMS ENGINEERING,13. |
| MLA | Li, Hanxiang,et al."Evaluating the effects of micro-zones of granular sludge on one-stage partial nitritation-anammox nitrogen removal".BIOPROCESS AND BIOSYSTEMS ENGINEERING (2020):13. |
入库方式： OAI收割
来源：重庆绿色智能技术研究院
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