Analysis of Microbial Community Structure in Biological Wastewater Treatment Process of Mized Wastewater Treatment Facility using Environmental Ecological Technique
2013
Son, H.S., Pusan National University, Pusan, Republic of Korea | Lee, S.J., Pusan National University, Pusan, Republic of Korea | Son, H.J., Pusan National University, Pusan, Republic of Korea
The bacterial Community structure in an biological reactor fed influent from a wastewater treatment system was investigated by denaturing gradient gel electrophoresis and in sity hybridization. Sludges were collected from three biological reactors at the M wastewater treatment facility. The influent of the MWTF consisted of mixed tannery wastewater and seafood wastewater. The treatment processes resulted in a removal efficiency for BOD and COD of 83.6~98.2% and 72.8~84.6%, respectively for tannery wastewater than for seafood wastewater resulted in greater survival of biomass in the biological reactors and a higher removal of BOD, COD, and T-N of about 8~18% . In contrast, addition of greater amounts of seafood wastewater decreased the amount of biomass in the bioreactors due to the increasing concentration of chromium from that wastewater and it also. The dominant bacterial species during the high seafood wastewater input period were Burkholderia cepacia and an uncultured bacterium , while Pseudomonas geniculata was dominant during the high tannery wastewater input period. Flavobacteriumsp. BF. 107 and Hyphomicrobium zavarzinii were dominant under anoxic conditions.
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