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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2019.1
- 수록면
- 731 - 736 (6page)
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The A2O process, which is used to treat most of the wastewater generated in Korea, induces the luxury uptake ofphosphorus-accumulating organisms (PAO) through anaerobic-aerobic conversion. Moreover, it can remove phosphorusby wasting microorganisms containing large amounts of phosphorus. However, when the nitrate in the return sludge entersthe anaerobic tank, the diminished reducing power of the anaerobic tank inhibits phosphorus release, which limits thephosphorus removal efficiency. In this study, the possibility of enhanced phosphorus removal is explored under theanaerobic-aerobic method by using the cyanobacterium Synechococcus sp., which can synthesize polyhydroxybutyrate(PHB) like PAO. If Synechococcus sp. can remove excess phosphorus according to the same mechanism as PAO, it canpossibly have a synergistic effect on phosphorus removal through photosynthesis metabolism as well as luxury-uptakedue to anaerobic-aerobic conversion. The study results indicate that there was no significant difference in growth andcarbon and phosphorus removal efficiencies, regardless of exposure to anaerobic conditions. Therefore, it the anaerobiccondition can be considered to not inhibit the growth and metabolism of Synechococcus sp. Under anaerobic conditions,Synechococcus sp. released 28 mg-P/g-MLSS/day of phosphorus, which is lower than the amount released by PAObacteria. There was no significant difference in the amounts of phosphorus removal between the anaerobic-aerobicconversion experiment and the control. In addition, the trend of carbon consumption was not consistent with the trendof phosphorus release. Therefore, at the very least, phosphorus release by Synechococcus sp. might follow a differentpathway, or Synechococcus sp. does not release phosphorus, unlike PAO. Therefore, according to the results of this study,the application of Synechococcus sp. for phosphorus removal, similarly to PAO bacteria, through the anaerobic-aerobicconversion method is inappropriate.
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참고문헌 (10)
참고문헌 신청
Fang, F / 2009 / Formation of aerobic granules and their PHB production at various substrate and ammonium concentration / Bioresource Technology 100(1):59~63
Balaji, S. / 2013 / A review on production of poly β hydroxybutyrates from cyanobacteria for the production of bio plastics / Algal Research 2(3):278~285
Ansari, S. / 2016 / Cyanobacterial Polyhydroxybutyrate (PHB); Screening, Optimization and Characterization / PLoS ONE 11:e0158168
Rodgers, M. / 2010 / Production of polyhydroxybutyrate by activated sludge performing enhanced biological phosphorus removal / Bioresource Technology 101(3):1049~1053
Kasemsap, C. / 2007 / Batch production of polyhydroxyalkanoate by low-polyphosphate-content activated sludge at varying pH / Bioresource Technology 98(5):1020~1027
Balaji, S. / 2013 / A review on production of poly β hydroxybutyrates from cyanobacteria for the production of bio plastics / Algal Research 2(3):278~285
Ansari, S. / 2016 / Cyanobacterial Polyhydroxybutyrate (PHB); Screening, Optimization and Characterization / PLoS ONE 11:e0158168
Rodgers, M. / 2010 / Production of polyhydroxybutyrate by activated sludge performing enhanced biological phosphorus removal / Bioresource Technology 101(3):1049~1053
Kasemsap, C. / 2007 / Batch production of polyhydroxyalkanoate by low-polyphosphate-content activated sludge at varying pH / Bioresource Technology 98(5):1020~1027
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