Microbial Community Structures in Two Membrane Bioreactors: Sequential and Continuous Modes

Author

Li, Jixiang ; He, Shuying ; Wang, Xiaojia ; Xia, Siqing ; Duan, Liang

Author_Institution

State Key Lab. of Pollution Control & Resource Reuse, Tongji Univ., Shanghai, China

fYear

2010

fDate

18-20 June 2010

Firstpage

1

Lastpage

4

Abstract

A sequential membrane reactor (SMBR) and a continuous membrane reactor (CMBR) were developed with focus on reactor performance and microbial community structure. The two MBRs all showed better removal of chemical oxygen demand (COD) and ammonia-nitrogen (NH₄⁺-N) treating synthetic wastewater, but the SMBR system showed markedly low membrane fouling rate because of sufficient relaxation of membranes. The results of denaturing gradient gel electrophoresis (DGGE) demonstrated the diversity of total bacteria and and β-proteobacteria ammonia-oxidizing bacteria (β-AOB) in CMBR was more complex than that of SMBR. Real-time PCR analysis indicated the number of β-AOB in CMBR was larger than that of SMBR, which resulted in high NH4+-N removal.

Keywords

ammonia; biochemistry; biomembranes; bioreactors; cellular biophysics; electrophoresis; gels; microorganisms; molecular biophysics; nitrogen; wastewater treatment; β-proteobacteria ammonia-oxidizing bacteria; ammonia-nitrogen; chemical oxygen demand removal; continuous membrane bioreactor; denaturing gradient gel electrophoresis; membrane fouling rate; membrane relaxation; microbial community structures; sequential membrane bioreactor; synthetic wastewater; total bacteria diversity; Biomembranes; Bioreactors; Chemicals; Content addressable storage; DNA; Filtration; Inductors; Microorganisms; Pollution control; Wastewater treatment;

fLanguage

English

Publisher

ieee

Conference_Titel

Bioinformatics and Biomedical Engineering (iCBBE), 2010 4th International Conference on

Conference_Location

Chengdu

ISSN

2151-7614

Print_ISBN

978-1-4244-4712-1

Electronic_ISBN

2151-7614

Type

conf

DOI

10.1109/ICBBE.2010.5517089

Filename

5517089