Effect of intermittent aeration on the microbial community structure of activated sludge in a submerged membrane bioreactor
文献类型：期刊论文
| 作者 | Chang, Jun-Jun1,2; Liang, Wei1; Xiao, En-Rong1; Wu, Zhen-Bin1 |
| 刊名 | WATER AND ENVIRONMENT JOURNAL
 |
| 出版日期 | 2011-06-01 |
| 卷号 | 25期号:2页码:214-218 |
| 关键词 | intermittent aeration microbial community structure phospholipid fatty acids (PLFAs) submerged membrane bioreactor treatment performance |
| ISSN号 | 1747-6585 |
| 通讯作者 | Liang, W, Chinese Acad Sci, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, Wuhan 430072, Peoples R China ; liangwei02@tsinghua.org.cn |
| 中文摘要 | Low removal rate for total nitrogen (TN) is the main limitation of a membrane bioreactor (MBR). The effects of intermittent aeration on the removal of TN and the microbial community structure of activated sludge from a submerged membrane bioreactor (SMBR) operating at three different aeration on/off times (run 1, continuous aeration; run 2, 60/60 min aeration on/off time; and run 3, 60/75 min aeration on/off time) were studied. The results showed that the removal rates for TN under different operation conditions were 26.2% (run 1), 59.5% (run 2) and 70.7% (run 3), respectively, and significant improvements were achieved. Monounsaturated phospholipid fatty acids (PLFAs) and saturated PLFAs were dominant PLFA types in activated sludge, followed by branched PLFAs; cyclopropane fatty acid were relatively small in amount. The highest ratio of the characteristic fatty acid representing the abundance of bacteria in activated sludge was found in run 2. Aerobic prokaryotes were the predominant groups under all three operation conditions, followed by the anaerobic bacteria and the Gram-positive bacteria group; sulphate-reducing bacteria (SRB) and other anaerobic bacteria occupied the lowest proportion. Intermittent aeration can be used as a possible means to improve the treatment performance in an MBR. |
| 英文摘要 | Low removal rate for total nitrogen (TN) is the main limitation of a membrane bioreactor (MBR). The effects of intermittent aeration on the removal of TN and the microbial community structure of activated sludge from a submerged membrane bioreactor (SMBR) operating at three different aeration on/off times (run 1, continuous aeration; run 2, 60/60 min aeration on/off time; and run 3, 60/75 min aeration on/off time) were studied. The results showed that the removal rates for TN under different operation conditions were 26.2% (run 1), 59.5% (run 2) and 70.7% (run 3), respectively, and significant improvements were achieved. Monounsaturated phospholipid fatty acids (PLFAs) and saturated PLFAs were dominant PLFA types in activated sludge, followed by branched PLFAs; cyclopropane fatty acid were relatively small in amount. The highest ratio of the characteristic fatty acid representing the abundance of bacteria in activated sludge was found in run 2. Aerobic prokaryotes were the predominant groups under all three operation conditions, followed by the anaerobic bacteria and the Gram-positive bacteria group; sulphate-reducing bacteria (SRB) and other anaerobic bacteria occupied the lowest proportion. Intermittent aeration can be used as a possible means to improve the treatment performance in an MBR. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences |
| 学科主题 | Environmental Sciences; Limnology; Water Resources |
| 类目[WOS] | Environmental Sciences ; Limnology ; Water Resources |
| 研究领域[WOS] | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
| 关键词[WOS] | MUNICIPAL WASTE-WATER ; FATTY-ACIDS ; BIOFILM REACTOR ; EUTROPHIC BAYS ; SOIL ; REMOVAL ; SEDIMENTS ; PATTERNS ; BIOMASS |
| 收录类别 | SCI |
| 资助信息 | Key Science Research Project of Eleven Five-year Plan [2008ZX07106-003, 2008ZX07316-004]; CAS [TJZX2-YW-07] |
| 语种 | 英语 |
| WOS记录号 | WOS:000290269100008 |
| 公开日期 | 2011-06-30 |
| 源URL | [http://ir.ihb.ac.cn/handle/342005/15664]  |
| 专题 | 水生生物研究所_水环境工程研究中心_期刊论文 |
| 作者单位 | 1.Chinese Acad Sci, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, Wuhan 430072, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chang, Jun-Jun,Liang, Wei,Xiao, En-Rong,et al. Effect of intermittent aeration on the microbial community structure of activated sludge in a submerged membrane bioreactor[J]. WATER AND ENVIRONMENT JOURNAL,2011,25(2):214-218. |
| APA | Chang, Jun-Jun,Liang, Wei,Xiao, En-Rong,&Wu, Zhen-Bin.(2011).Effect of intermittent aeration on the microbial community structure of activated sludge in a submerged membrane bioreactor.WATER AND ENVIRONMENT JOURNAL,25(2),214-218. |
| MLA | Chang, Jun-Jun,et al."Effect of intermittent aeration on the microbial community structure of activated sludge in a submerged membrane bioreactor".WATER AND ENVIRONMENT JOURNAL 25.2(2011):214-218. |
入库方式： OAI收割
来源：水生生物研究所
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。