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作者:

Wu, Changyong (Wu, Changyong.) | Peng, Yongzhen (Peng, Yongzhen.) (学者:彭永臻) | Wang, Shuying (Wang, Shuying.) (学者:王淑莹) | Ren, Nanqi (Ren, Nanqi.) | Wan, Chunli (Wan, Chunli.)

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摘要:

Enhanced denitrifying phosphorus removal in anaerobic-anoxic/oxic (A2O) process is an effective way to increase the removal efficiency of nitrogen and phosphorus when treating low C/N ratio domestic wastewater. In this study, a 52.5L pilot-scale reactor, based on plug-flow A2O configuration, was used to treat domestic wastewater. In addition, the microbial population variation was investigated by polymerase chain reaction-denaturing gradient gel electrophoresis (PCR-DGGE). The results showed that the microbial community structure and dominant bacteria changed with the variation of wastewater quality and operating parameters. The dynamic change of microbial population was consistent with the variation of operation. Sequence results of DGGE bands showed that the dominant bacterial community in the system was Proteobacteria. Acinetobacter may be responsible for the traditional biological phosphorus removal in the system, but it disappeared gradually with the enhancement of denitrifying phosphorus removal. Uncultured Chlorobi bacterium increased with the enhancement of denitrifying phosphorus removal and it might be the major denitrifying phosphate accumulating organisms (DPAOs) in the system. © All Rights Reserved.

关键词:

Anoxic water Bacteria Biological water treatment Chemicals removal (water treatment) Denitrification Electrophoresis Nitrogen removal Phosphorus Polymerase chain reaction Wastewater treatment

作者机构:

  • [ 1 ] [Wu, Changyong]State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Heilongjiang Harbin 150090, China
  • [ 2 ] [Peng, Yongzhen]State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Heilongjiang Harbin 150090, China
  • [ 3 ] [Peng, Yongzhen]Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China
  • [ 4 ] [Wang, Shuying]Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China
  • [ 5 ] [Ren, Nanqi]State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Heilongjiang Harbin 150090, China
  • [ 6 ] [Wan, Chunli]State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Heilongjiang Harbin 150090, China

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来源 :

CIESC Journal

ISSN: 0438-1157

年份: 2010

期: 1

卷: 61

页码: 186-191

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