Mechanistic study of on-site sludge reduction in a baffled bioreactor consisting of three series of alternating aerobic and anaerobic compartments
文献类型：期刊论文
| 作者 | Quan, Feng1,2,3; Yu Anfeng1; Chu Libing1; Chen Hongzhang2 ; Xing, Xin-Hui1
|
| 刊名 | BIOCHEMICAL ENGINEERING JOURNAL
 |
| 出版日期 | 2012-08-15 |
| 卷号 | 67期号:0页码:45-51 |
| 关键词 | On-site sludge reduction Baffled bioreactor Aerobic processes Anaerobic processes Waste-water treatment Environmental preservation |
| ISSN号 | 1369-703X |
| 通讯作者 | Xing, XH |
| 英文摘要 | A baffled reactor with repeated coupling of aerobic and anaerobic conditions (rCAA) was constructed and the mechanism of the on-site sludge reduction was analyzed systematically. During the long-term operation of 3 years, the chemical oxygen demand (COD) removal efficiency reached over 90% on average and the sludge yield in the rCAA system was 0.098 kg suspended sludge (SS) kg(-1) COD, which was approximately 36.3% of that in a conventional activated sludge process at an influent COD of 700-800 mg L-1 and hydraulic retention time (HRT) of 15 h. Analysis of soluble components, sludge characteristics, microorganism community and metabolic activities in the rCAA system showed that, when the sludge in the aerobic zone flowed into the anaerobic zone, sludge destruction and degradation occurred. Intracellular organic substances were then released and further hydrolyzed to small molecular compounds. These intermediate substances were degraded in subsequent aerobic compartments. In this way, cryptic growth of the sludge was realized that could contribute to sludge reduction. Microbial ecological analysis by denaturing gradient gel electrophoresis (DGGE) further showed that the rCAA process spatially domesticated the different microbial communities along the flow direction of the bioreactor, which enhanced excess sludge lysis and transformation, cryptic growth and bacterial predation. (C) 2012 Elsevier B.V. All rights reserved. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine ; Technology |
| 类目[WOS] | Biotechnology & Applied Microbiology ; Engineering, Chemical |
| 研究领域[WOS] | Biotechnology & Applied Microbiology ; Engineering |
| 关键词[WOS] | SULFATE-REDUCING SYSTEMS ; WASTE-WATER TREATMENT ; EXCESS SLUDGE ; ACTIVATED-SLUDGE ; MINIMIZATION ; SOLUBILIZATION ; OZONATION ; COMBINATION ; ENZYMOLOGY ; COMMUNITY |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000310945100006 |
| 公开日期 | 2013-10-11 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/3160]  |
| 专题 | 过程工程研究所_生化工程国家重点实验室 |
| 作者单位 | 1.Tsinghua Univ, Dept Chem Engn, Beijing 100084, Peoples R China 2.Chinese Acad Sci, Inst Proc Engn, Natl Key Lab Biochem Engn, Beijing 100190, Peoples R China 3.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Quan, Feng,Yu Anfeng,Chu Libing,et al. Mechanistic study of on-site sludge reduction in a baffled bioreactor consisting of three series of alternating aerobic and anaerobic compartments[J]. BIOCHEMICAL ENGINEERING JOURNAL,2012,67(0):45-51. |
| APA | Quan, Feng,Yu Anfeng,Chu Libing,Chen Hongzhang,&Xing, Xin-Hui.(2012).Mechanistic study of on-site sludge reduction in a baffled bioreactor consisting of three series of alternating aerobic and anaerobic compartments.BIOCHEMICAL ENGINEERING JOURNAL,67(0),45-51. |
| MLA | Quan, Feng,et al."Mechanistic study of on-site sludge reduction in a baffled bioreactor consisting of three series of alternating aerobic and anaerobic compartments".BIOCHEMICAL ENGINEERING JOURNAL 67.0(2012):45-51. |
入库方式： OAI收割
来源：过程工程研究所
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