Journal of Northeastern University Natural Science ›› 2014, Vol. 35 ›› Issue (5): 751-755.DOI: 10.12068/j.issn.1005-3026.2014.05.033

• Resources & Civil Engineering • Previous Articles     Next Articles

PCRDGGE Analysis of Microbial Community Structure in a Electrocoagulation Membrane Bioreactor

LI Liang, HU Xiaomin, YU Danjing, CHEN Wenxi   

  1. School of Resources & Civil Engineering, Northeastern University, Shenyang 110819, China.
  • Received:2013-07-20 Revised:2013-07-20 Online:2014-05-15 Published:2014-08-18
  • Contact: HU Xiaomin
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Abstract: A new submerged electrocoagulation membrane bioreactor (ECMBR) was developed by installing ferric plates on both sides of membrane module in the traditional submerged membrane bioreactor (SMBR) to treat the simulated dying and printing wastewater with active brilliant blue XBR. The removal efficiency of ECMBR on COD, NH+4—N, TN, TP and chroma was respectively 2.7%, 3.8%, 4.7%, 39.2% and 28.6% higher than that of SMBR. The PCRDGGE analysis was used to explore the evolution of bacterial community in ECMBR and SMBR. The diversity Shannon index of the whole bacterial community in ECMBR was 2.9, higher than that in SMBR. Moreover, the bacterial community structure underwent small changes, with a 97% similarity in both ECMBR and SMB. The results showed that it was possible to enhance the bacterial community diversity by electrocoagulation.

Key words: membrane bioreactor (MBR), electrocoagulation, micro diversity, PCRDGGE, cloned sequencing

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