Journal of Environmental Impact Assessment (환경영향평가)

Korean Society of Environmental Impact Assessment (한국환경영향평가학회)
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Comparative Study on Biological Technology in Artificial Floating Island: Application of Media and Daphnia to Algal Biomass Control

인공부도의 생물학적 처리 기술 비교 연구: 인공부도의 조류의 저감 효과 개선을 위한 여재와 물벼룩 적용

  • Jin, Mei-Yan (Department of Environmental Science and Engineering, Kyung Hee University) ;
  • Chang, Kwang-Hyeon (Department of Environmental Science and Engineering, Kyung Hee University) ;
  • Kim, Tae-Hoon (Department of Environmental Science and Engineering, Kyung Hee University) ;
  • Oh, Jong-Min (Department of Environmental Science and Engineering, Kyung Hee University)
  • ;
  • 장광현 (경희대학교 환경학 및 환경공학과) ;
  • 김태훈 (경희대학교 환경학 및 환경공학과) ;
  • 오종민 (경희대학교 환경학 및 환경공학과)
  • Received : 2017.10.11
  • Accepted : 2018.02.06
  • Published : 2018.02.28
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Abstract

Media (bio-stone), aquatic macrophytes (Oenanthe javanica) and herbivorous cladoceran (Daphnia similoides) have been used in artificial floating island (AFI) systems for water pollution control. Efficiency in chl-a concentration controlling of AFI was tested using different combinations of each device: G-BD-mixture bio-stone and Daphnia similoides, G-OB-mixture Oenanthe javanica and bio-stone, G-BOD-mixture bio-stone, Oenanthe javanica and Daphnia similoides, and the out-put water quality improvement was compared with G-C-control (no device was applied). We analyzed removal efficiency of chl-a concentration and nutrient concentrations in the artificially eutrophic water in the laboratory experimental facility. The results showed average removal rates of Chlorophyll a, TN and TP for different four groups: 69.24%, 16.61%, -0.61%; 68.39%, 14.11%, 10.52%; 78.30%, 6.69%, 25.09%; 35.42%, -3.47%, -25.18%, respectively. The results have suggested that the mixture of media, plants and zooplankton is the most efficient combination for Chlorophyll a control, while the mixture of macrophytes and bio-stone have better efficiency nutrient control.

호소의 경관성을 향상 시킬 수 있은 자연정화법인 인공식물섬을 설계하고 수질개선 효율을 향상시키기 위하여 여재, 식생과 물벼룩을 혼용하는 방법을 개발하였다. 따라서 조류 제거 효율을 알아보기 위한 각 혼합시스템은 G-BD-여재와 물벼룩, G-OB-식물과 여재, G-BOD-여재 식물과 물벼룩, G-C-대조군으로 실험 및 평가하였다. 각 혼합시스템 현장적용성을 평가하기 위하여 chl-a, TN과 TP의 제거효율을 조사 하였고, 그 결과 G-BD의 평균제거 효율은 69.24%, 16.61%, -0.61%; G-OB는 평균 68.39%, 14.11%, 10.52%; G-BOD는 평균 78.30%, 6.69%, 25.09%; G-C는 평균 35.42%, -3.47%, -25.18%로 조사되었다. 결과에 따라 제안하면 여재, 식생과 동물플랑크톤을 혼용한 시스템이 조류제어방면에서 효율적으로 나타났다. 하지만 영양염류 제어관리에서는 식생과 여재를 혼합한 시스템이 가장 효율적이다.

Keywords

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