Enhanced nitrogen removal of constructed wetlands by coupling with the bioelectrochemical system under low temperature: Performance and mechanism
文献类型：期刊论文
| 作者 | Fang, Ying-ke; Wang, Hong-cheng ; Han, Jing-long; Li, Zhi-ling; Wang, Ai-jie
|
| 刊名 | JOURNAL OF CLEANER PRODUCTION
 |
| 出版日期 | 2022-05-20 |
| 卷号 | 350期号:0页码:131365 |
| 关键词 | WASTE-WATER AUTOTROPHIC DENITRIFICATION BACTERIAL COMMUNITIES PHOSPHORUS REMOVAL SP-NOV. PURIFICATION CULTURES EFFLUENT IMPACTS SULFUR |
| ISSN号 | 0959-6526 |
| 英文摘要 | Constructed wetland (CW) integrated with the bioelectrochemical system (BES-CW) is a novel and efficient low-strength wastewater treatment technology. In this study, the integrated CW (E-CW), open-circuit BES-CW (O-CW) and conventional CW (Control) were operated to investigate the performance and mechanism of nitrogen removal in E-CW under low temperature (10 ?). Results showed that low temperature nearly completely inhibited nitrate removal in Control and O-CW, but improved ammonia oxidation efficiencies (99.46% and 99.63%, respectively) due to high dissolved oxygen (DO) concentration in cold influent and enhanced ammonia oxidation archaea (AOA) growth. However, nitrite oxidation became the limited step of nitrification and partial nitrification and denitrification (PND) played the main role in TN removal under low temperature in Control and O-CW. On the contrary, nitrate was almost completely removed in E-CW (98.12%) on the 2nd day even at 10 ? due to its enhanced cold-resistant autotrophic denitrifying bacteria growth by applying low voltage and high DO consumption rate, and accordingly further improved its TN removal efficiency (82.26%), while the average nitrate and TN removal efficiencies in Control were only 11.10% and 37.26%, respectively. Thermomonas, Arenimonas, Gallionella and Thiobacillus were the main denitrifying bacteria attributed to nitrate removal in E-CW under low temperature involving autotrophic denitrification and cathode-driven bioelectrochemical denitrification. Moreover, extremely lower N2O emission from E-CW (0.81%) was obtained than the Control (12.76%), which indicated that the integration of CWs and the bioelectrochemical system is a viable technology for mitigation of greenhouse gas emission from CWs. |
| 源URL | [https://ir.rcees.ac.cn/handle/311016/47784]  |
| 专题 | 生态环境研究中心_中国科学院环境生物技术重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Key Lab Environm Biotechnol, Beijing 100085, Peoples R China 2.Harbin Inst Technol, Sch Environm, State Key Lab Urban Water Resource & Environm, Harbin 150090, Peoples R China 3.Harbin Inst Technol Shenzhen, Sch Civil & Environm Engn, Shenzhen Key Lab Organ Pollut Prevent & Control, Shenzhen 518055, Peoples R China 4.Univ Chinese Acad Sci, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Fang, Ying-ke,Wang, Hong-cheng,Han, Jing-long,et al. Enhanced nitrogen removal of constructed wetlands by coupling with the bioelectrochemical system under low temperature: Performance and mechanism[J]. JOURNAL OF CLEANER PRODUCTION,2022,350(0):131365. |
| APA | Fang, Ying-ke,Wang, Hong-cheng,Han, Jing-long,Li, Zhi-ling,&Wang, Ai-jie.(2022).Enhanced nitrogen removal of constructed wetlands by coupling with the bioelectrochemical system under low temperature: Performance and mechanism.JOURNAL OF CLEANER PRODUCTION,350(0),131365. |
| MLA | Fang, Ying-ke,et al."Enhanced nitrogen removal of constructed wetlands by coupling with the bioelectrochemical system under low temperature: Performance and mechanism".JOURNAL OF CLEANER PRODUCTION 350.0(2022):131365. |
入库方式： OAI收割
来源：生态环境研究中心
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。