Journal of Marine Bioscience and Biotechnology (한국해양바이오학회지)

The Korean Society for Marine Biotechnology (한국해양바이오학회)
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Development of Improving Water Quality in Eutrophic Lake Using Microalgal Cultivation

미세조류 배양을 이용한 부영양호 내 수질 개선 기술 개발

  • Kim, Ki-Hyun (National Marine Bioenergy R&D Consortium, Inha University) ;
  • Kang, Sung-Mo (National Marine Bioenergy R&D Consortium, Inha University) ;
  • Cho, Yonghee (National Marine Bioenergy R&D Consortium, Inha University) ;
  • Jeon, Sanghyun (National Marine Bioenergy R&D Consortium, Inha University) ;
  • Kim, Jun-Ho (National Marine Bioenergy R&D Consortium, Inha University) ;
  • Park, Hanwool (National Marine Bioenergy R&D Consortium, Inha University) ;
  • Lee, Yunwoo (National Marine Bioenergy R&D Consortium, Inha University) ;
  • Jeong, Jeongho (National Marine Bioenergy R&D Consortium, Inha University) ;
  • Lim, Sang-Min (National Marine Bioenergy R&D Consortium, Inha University) ;
  • Lee, Choul-Gyun (National Marine Bioenergy R&D Consortium, Inha University)
  • 김기현 (해양바이오에너지 생산기술개발연구센터) ;
  • 강성모 (해양바이오에너지 생산기술개발연구센터) ;
  • 조용희 (해양바이오에너지 생산기술개발연구센터) ;
  • 전상현 (해양바이오에너지 생산기술개발연구센터) ;
  • 김준호 (해양바이오에너지 생산기술개발연구센터) ;
  • 박한울 (해양바이오에너지 생산기술개발연구센터) ;
  • 이윤우 (해양바이오에너지 생산기술개발연구센터) ;
  • 정정호 (해양바이오에너지 생산기술개발연구센터) ;
  • 임상민 (해양바이오에너지 생산기술개발연구센터) ;
  • 이철균 (해양바이오에너지 생산기술개발연구센터)
  • Received : 2018.11.30
  • Accepted : 2018.12.24
  • Published : 2018.12.31
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Abstract

There are many eutrophic lakes by point and non-point pollution sources such as in dustrial waste water, domestic raw sewage, and mucks. The eutrophic lakes not only cause algal blooms but also destroy the ecosystem in the lakes due to high nutrient concentrations. The purpose of this study was to improve water quality in eutrophic lakes by cultivating microalgae using photobioreactors (PBRs) with selectively permeable mesh (SPM), supplying nutrients in the lake and inhibiting cell leakage by diffusion and water permeability. Chlorella vulgaris, was cultivated using PBRs with SPM installed in Inkyung Lake located in Inha university, Incheon, Korea. When cultivating C. vulgaris, $8.3g/m^2/day$ of average biomass productivity was obtained at 3 days. Furthermore, concentrations of total nitrogen and phosphorus were reduced by 35.7% and 84.2%, respectively, compared to initial condition and water quality in eutrophic lake was improved to oligotrophic environment. These results suggest that microalgal cultivation using PBRs with SPM in the lake could produce microalgal biomass as well as improve water quality by decreasing nutrient concentrations.

Keywords

References

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