Journal of Environmental Impact Assessment (환경영향평가)

Korean Society of Environmental Impact Assessment (한국환경영향평가학회)
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Evaluation of DOM Variations and Reduction Effects in Bioreation Artificial Wetland

생물반응 인공습지 내 DOM 변동 및 저감효과 평가

  • Joo, Kwangjin (Department of Environmental Applications, Kyung Hee University) ;
  • Lee, Jongjun (Department of Environmental Applications, Kyung Hee University) ;
  • Kim, Tea-Kyung (Department of Environmental Applications, Kyung Hee University) ;
  • Choi, Isong (Department of Environmental Applications, Kyung Hee University) ;
  • Chang, Kwang-hyeon (Department of Environmental science and Engineering, Kyung Hee University) ;
  • Joo, Jinchul (Department of Environmental Engineering, Hanbat National University) ;
  • Oh, Jongmin (Department of Environmental science and Engineering, Kyung Hee University)
  • 주광진 (경희대학교 환경응용과학과) ;
  • 이종준 (경희대학교 환경응용과학과) ;
  • 김태경 (경희대학교 환경응용과학과) ;
  • 최이송 (경희대학교 환경응용과학과) ;
  • 장광현 (경희대학교 환경학 및 환경공학과) ;
  • 주진철 (한밭대학교 환경공학과) ;
  • 오종민 (경희대학교 환경학 및 환경공학과)
  • Received : 2018.09.19
  • Accepted : 2018.12.08
  • Published : 2018.12.31
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Abstract

In this study, the vertical and horizontal flow wetlands were combined in series to create conditions for flow in the exhalation and anaerobic state with the aim of monitoring the variability and reduction of dissolved organic matterin the bio-reactive artificial wetlands, and the performance assessment was conducted as acrylic reaction groups by designing artificial wetlands that filled the functionalresiduals. In case of artificial wetlands in vertical and horizontal planes, the concentration of dissolved oxygen (DO) in the reaction tank was measured as 2.7 mg/L in the vertical flow wetlands under exhalation, and N.D. in the horizontal flow artificial wetlands under anaerobic conditions. The test was carried out by changing the operation time to 140 min, 80 min, and 60 min. The test was conducted with the same natural operation time of 20 min depending on the operation time. All hours of operation were shown to be due to microbial activity. In 3D-EEM, it was found that the longer the driving time was taken, the more reduction the organic compounds in the areas of insoluble human resources, III and V. Further research on the mechanism analysis of future reduction effects is expected to be carried out, but the findings are expected to contribute to the development of technologies for reducing obfuscated substances using artificial wetlands in the future.

본 연구에서는 생물반응 인공습지 내 용존유기물질의 변동 및 저감특성을 모니터링할 목적으로 수직 수평 흐름 습지를 직렬로 복합 적용하여 호기, 혐기상태의 흐름조건을 만들어 주었고 기능성 여재를 충진한 인공습지를 고안하여 아크릴 반응조로 제작 후 성능평가를 진행하였다. 수직 수평의 인공습지의 경우 호기 및 혐기조건을 평가하기 위해 반응조 내 용존산소(DO) 농도를 측정해본 결과 호기상태의 수직흐름인공습지에서는 2.7 mg/L, 혐기상태의 수평 흐름인공습지에서는 N.D.로 측정되어 운전조건에 부합하였다. 운전시간은 140 min, 80 min, 60 min으로 변경하며 실험을 진행을 하였으며, 운전시간에 따른 자연폭기시간 20 min을 동일하게 설정해 주고 실험을 진행하였다. 운전시간 모두 미생물의 활동으로 인한 결과를 보였으며, 3D-EEM에서는 운전시간을 길게 가져갈수록 난분해성 휴믹계물질구역인 III, V구역의 유기물에서 높은 저감효과를 보이는 것으로 확인되었다. 향후 저감효과에 대한 메커니즘 분석에 대한 연구는 추가로 진행될 필요가 있을 것으로 사료되지만, 본 연구결과는 향후 인공습지를 활용한 난분해성 물질의 저감을 위한 기술발전에 기여할 수 있을 것으로 기대된다.

Keywords

HOPHBL_2018_v27n6_582_f0001.png 이미지

Figure 1. Reactor flow diagram

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Figure 2. Five EEM distribution regions

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Figure 3. FI(fluorescence index) analysis

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Figure 4. HIX(humification index) analysis

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Figure 5. BIX(biological index) analysis

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Figure 6. Result of 3D-EEM(Running time 140 min)

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Figure 7. Result of 3D-EEM(Running time 80 min)

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Figure 8. Result of 3D-EEM(Running time 60 min)

HOPHBL_2018_v27n6_582_f0011.png 이미지

Figure 9. Result of intensity analysis(Running time 140 min)

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Figure 10. Result of intensity analysis(Running time 80 min)

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Figure 11. Result of intensity analysis(Running time 60 min)

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Figure 12. Average removal efficiency

Table 1. Chemical composition result of the ceramics media(wt%)

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Table 2. List of environmental parameters used for the prediction

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Table 3. Each reactor measured value

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