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KMID : 1156220110370020124
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Journal of Environmental Health Sciences
2011 Volume.37 No. 2 p.124 ~ p.132
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Structure and Characteristics of Bacterial Community on Biofilm of Food Wastewater Treatment System in Winter
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Lee Dong-Geun
Yoo Ki-Hwan
Park Seoung-Joo
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Abstract
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Biofilm and aeration tank of pilot and full RABC (rotating activated Bacillus contactor) plant were analyzed to characterize and determine bacterial community structure in food wastewater treatment system at winter. Concentration of heterotrophic bacteria and Bacillus group was and CFU/ml, respectively, at biofilm of pilot-plant while others represented and CFU/ml, respectively. Five and eight phyla were detected at biofilm of pilot- and full-plant, respectively, by 16S rDNA sequencing. Biofilm of pilot-plant was dominated by -Proteobacteria (38.8%), -Proteobacteria (22.4%), and Bacteroidetes (12.2%), and the most dominant genus was Zoogloeae genus (22.4%). Candidate division TM7 (12.5%) was only detected at biofilm of full-plant and it was dominated by Bacteroidetes (33.3%), -Proteobacteria (29.2%), and -Proteobacteria (20.8%). Clostridium genus specific primer set enabled to detect the sequences of Clostridium genus. These suggested that anaerobic and aerobic bacteria were coexisted even from the initial period of biofilm formation and -Proteobacteria, -Proteobacteria and Bacteroidetes were major phyla in biofilm of food wastewater treatment system at winter.
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KEYWORD
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Bacterial community, Biofilm, Food wastewater, RABC, 16S rDNA
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