Journal of Wetlands Research (한국습지학회지)

Korean Wetlands Society (한국습지학회)
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Analysis of Water Quality Improvement Effects on Wetland Expansion using NPS-WET Model

NPS-WET 습지 모델링을 이용한 습지 증설에 따른 수질개선 효과 분석

  • Park, Jongseok (Department of Civil Engineering, Chonnam National University) ;
  • Rhee, Kyounghoon (Department of Civil Engineering, Chonnam National University) ;
  • Han, Changhwa (Department of Civil Engineering, Chonnam National University)
  • Received : 2017.07.25
  • Accepted : 2017.09.29
  • Published : 2017.11.30
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Abstract

This study was designed to provide basic information for an effective wetland design by analyzing the correlation between wetland size and water quality improvement effect in regard to an artificial wetland inside the Biopark Basin by means of applying the modelling technique. It is expected that this study will contribute to a rational design, operation and management of the artificial wetland in the basin. The following conclusions are obtained through the results and discussion of this study. The results of respective design scenarios that expanded the size of the artificial wetlands in the range of 0-100 % showed that when the wetland is 'expanded 75 % compared with the existing size', water quality improved best compared with the design criteria of 'the current operation of the existing size'. The improved data are: 66.7 % in BOD5, 69.9 % in TSS, 64.7 % in T-N, 85.5 % in T-P and 51.8 % in Chl-a. In particular, with the exception of Chl-a, water quality improvement stood out in the quality items in summer among the four seasons. And that there in no direct relationship between facility scale and water quality improvement.

본 연구는 바이오파크 유역 내 인공습지에 대하여 습지규모와 수질개선효과의 관련성을 분석하여, 최적의 습지규모 설계를 위한 기초 자료를 제공하기 위하여 수행되었다. 본 연구를 통해 인공습지에 대한 합리적인 규모 설계 및 운영에 기여할 것으로 판단되며, 연구결과를 통해 다음과 같은 결론을 얻었다. 인공습지의 0-100 % 증설범위의 설계별 시나리오 분석결과, '기존규모 대비 75 % 증설'의 경우, '기존규모의 현 상태 운영' 설계 기준과 비교하여 수질이 BOD5는 66.7 %, TSS는 69.9 %, T-N은 64.7 %, T-P는 85.5 %, Chl-a는 51.8 % 만큼 개선되어 가장 양호한 효과를 보여주었으며, 특히 4계절 중 여름철에 Chl-a를 제외한 수질항목에서 효과가 크게 나타나는 경향이었다. 그리고 설계규모와 수질개선 효과간 정비례관계가 성립되지 않은 것으로 나타났다.

Keywords

References

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