Comparison of nitrification performance and microbial community between submerged membrane bioreactor and conventional activated sludge system
文献类型：会议论文
| 作者 | Li, H; Yang, M; Zhang, Y; Liu, X; Gao, M; Kamagata, Y |
| 出版日期 | 2005 |
| 会议名称 | Conference on Water Environment-Membrane Technology |
| 会议日期 | JUN 07-10, 2004 |
| 会议地点 | Seoul, SOUTH KOREA |
| 关键词 | nitrification DGGE SMBR activated sludge inorganic wastewater nitrifying bacteria EPS |
| 英文摘要 | A submerged membrane bioreactor (SMBR) and a conventional activated sludge system (CAS) were compared in parallel over a period of more than 260 days on treating synthetic ammonia-bearing inorganic wastewater without sludge purge under decreased hydraulic retention times (HRTs). Conversion of NH4+-N to NO3--N was achieved with an efficiency of over 98 % at an HRT >= 10 h in the SMBR, while similar performance was obtained at an HRT >= 20 In in the CAS. Denaturing gradient gel electrophoresis (DGGE) of polymerase chain reaction (PCR) amplified 16S rDNA was used to monitor variations of community structures in the two systems. With the prolongation of operation, the number of DGGE bands in the SMBR gradually increased from the initial II bands to the final 22 bands, whereas that in the CAS varied in a range between 13 and 183 Sequence analysis indicates that Nitrosomonas sp. and Nitrospira sp. were the dominating nitrification species responsible for ammonia and nitrite oxidation, respectively. Heterotrophic bacteria like Pseudomonas sp. and Flavobacteria sp. existed in both of the systems although only inorganic wastewater was fed. Substantive accumulation of extracellular polymeric substances (EPS) in the SMBR was confirmed by scanning electron microscopy and EPS analysis. |
| ISSN号 | 0273-1223 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/24769]  |
| 专题 | 生态环境研究中心_环境水质学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Li, H,Yang, M,Zhang, Y,et al. Comparison of nitrification performance and microbial community between submerged membrane bioreactor and conventional activated sludge system[C]. 见:Conference on Water Environment-Membrane Technology. Seoul, SOUTH KOREA. JUN 07-10, 2004. |
入库方式： OAI收割
来源：生态环境研究中心
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