Journal of the Korea Academia-Industrial cooperation Society (한국산학기술학회논문지)

The Korea Academia-Industrial cooperation Society (한국산학기술학회)
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Development and Application of Integrated Evaluation Index of Rainwater Drainage System based on the Life Cycle Assessment

LCA를 고려한 우수배제시스템 통합평가지표의 개발과 적용

  • Ahn, Jungkyu (Dept. of Civil and Environmental Engineering, Incheon National University) ;
  • Park, Sung Won (Dept. of Civil and Environmental Engineering, Incheon National University) ;
  • Kim, Yong In (Jisung C&E Co.)
  • 안정규 (인천대학교 건설환경공학부) ;
  • 박성원 (인천대학교 건설환경공학부) ;
  • 김용인 (지성산업개발)
  • Received : 2019.02.14
  • Accepted : 2019.07.05
  • Published : 2019.07.31
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Abstract

To overcome the limitations of existing rainwater drainage systems, we compared and analyzed a newly developed eco-friendly channel-type rainwater drainage system. We also developed an integrated evaluation index to quantify the improvement of the new system. The concept of Life Cycle Assessment (LCA) was applied to calculate and compare the costs of each process and to develop the integrated evaluation index, which considers the carbon emissions by each process. As a result, the cost was reduced by 53% overall compared to an O-type system and by 63% compared to a U-type system. In addition, when applying the integrated evaluation index, the new system was evaluated to be over 80% in the four processes compared to the existing systems. When applying the evaluation index to sites in Anyang and Incheon, the new system was improved by 35-100% compared to existing systems.

본 논문은 침수피해 방지를 위한 기존의 우수배제시스템의 한계점을 극복하기 위해서 신규 개발된 친환경 수로형 우수배제시스템을 비교 및 분석하고, 기존 시스템 대비 장점을 정량화하기 위한 통합평가지표의 개발 및 적용에 관한 연구이다. 이에 전과정평가(Life Cycle Assessment, LCA)의 개념을 적용하여 각 공정별 필요물량과 비용을 산정하여 비교하였고, 또한 탄소배출량을 각 과정별로 산정하여 고려하는 통합평가지표를 개발하여 각각의 기술에 적용하였다. 그 결과 원형 집수시스템에 비해 전 과정에 걸쳐 비용이 53 %, 측구 집수시스템에 비해 63 %가 절감되는 것으로 분석되었다. 또한 통합평가지표 적용결과, 기존 기술대비 수로형 집수시스템을 평가한 결과 건설공사 분야를 제외한 나머지 4가지 분야(건설자재, 운용 및 유지관리, 해체, 폐기)에 있어서 80 % 이상의 높은 점수로 평가되었다. 본 연구에서 개발된 평가지표를 경기도 안양현장과 인천 청라현장에 적용하여 기존 기술대비 약 35 ~ 100 % 개선된 높은 점수로 향상되어 개선효과를 입증하였고 동시에 적용성을 확보하였다.

Keywords

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Fig. 1. Photos of rainwater drainage system

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Fig. 2. Schematic designs of rainwater drainage

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Fig. 3. Cost comparison for each system and phase

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Fig. 4. Life cycle and CO2 emission of rainwater collecting system

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Fig. 5. Evaluation results for processes and drainage type

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Fig. 6. Application site A (Anyang-si)

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Fig. 7. Application site B (Incheon-si)

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Fig. 8. Evaluation scores and improvement

Table 1. Comparisons of drainage systems (pros and cons)

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Table 2. Estimation of CO2 emission of rainwater drainage systems

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Table 3. Score comparison of CO2 emission of rainwater drainage systems

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Table 4. Estimation of CO2 emission of rainwater drainage systems in application site A

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Table 5. Estimation of CO2 emission of rainwater drainage systems in application site B

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Table 6. Score comparison of rainwater drainage systems in application sites A and B

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References

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