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2025 Vol.58, Issue 8 Preview Page

Research Article

Estimation of carbon storage through constructed wetland operated with STP effluent

하수처리장 방류수 유입 인공습지를 통한 탄소 저장량 산정

Jin Honga
,
Kyungik Gilb*
홍 진a
,
길 경익b*
aPh.D. Candidate, Department of Civil Engineering, Seoul National University of Science and Technolopgy, Seoul, Korea
bProfessor, Department of Civil & Environmental Engineering, Seoul National University of Science and Technolopgy, Seoul, Korea
a서울과학기술대학교 건설시스템공학과 박사과정
b서울과학기술대학교 건설시스템공학과 교수
*Corresponding Author
31 August 2025. pp. 637-645
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Abstract

As greenhouse gas emissions have caused severe climate change, numerous problems have occurred. Among greenhouse gases, the study focused on CO2, especially carbon, and tried to store carbon through and tried to store carbon through constructed wetland. The study tried to measure the total amount of carbon and separate the total carbon into two types, soil organic carbon (SOC) and plant biomass. The constructed wetland has two types of modules, one is a vertical flow surface wetland (VFS) and the other is a horizontal flow surface wetland (HFS). This study planted Typha orientali C. on the vertical flow wetland and Phragmite australis on the horizontal flow wetland. To store carbon, this study inflowed effluent from sewage treatment plant into the constructed wetland (CW). During the operation days, the amount of soil carbon and vegetation carbon storage was measured from the constructed wetland. This study has the purpose of seeking much more effective constructed wetland with carbon storage, researching the previous study on biomass, and adapting the result to SOC from the constructed wetland. Planting Typha orientali C. on the vertical flow wetland and Phragmite australis on the horizontal flow wetland, carbon storage of each wetland had 25.57 kg/ha/yr and 29.53 kg/ha/yr. Yet, in VFW carbon storage more effective with Sedum takeminese. Since the constructed wetland was operated by effluent from sewage treatment plant, to operate the wetland with ease, undergroundization sewage treatment plants in Korea, apply the most effective constructed wetland on the land where sewage treatment plants were located then 64,937ton/ha of carbon could be stored per year.

Keywords
Constructed Wetland (CW)
Carbon
Plant
Sewage treatment plant

온실가스 배출로 인해 심각한 기후 변화가 발생하면서 수많은 문제가 발생하였다. 해당 연구에서는 온실가스 중 이산화탄소, 특히 탄소에 인공 습지를 통한 탄소를 저장하고자 하였다. 이 연구는 인공 습지 내의 총 탄소를 토양 유기 탄소(SOC)와 식물 바이오매스의 두 가지 유형으로 분리하여 산정을 하고자 하였다. 인공 습지에는 수직 흐름형 습지(VFS)와 수평흐름형 습지(HFS)라는 두 가지 모듈로 이루어져 운전되었다. 수직흐름형 습지에 Typha Orientali C. 를 수평흐름형 습지에 Phragmite australis를 식재하여 바이오매스를 산정하고자 하였다. 탄소를 저장하기 위해 본 연구에서는 하수처리장의 폐수를 인공 습지로 유입시켰다. 운영 기간 동안 인공 습지에서 토양 내 유기 탄소와 식생 탄소 저장량을 측정하므로 탄소저장에 효율적인 인공 습지를 찾고자 하였다. 바이오매스에 대한 선행 연구를 통하여 다른 식생의 바이오매스를 인공 습지에서 SOC에 적용하였다. 운영 기간 내의 SOC 저장량은 9.8 kg/m2와 9.91 kg/m2였습니다. 수직흐름형 습지에는 Typha Orientali C. 를, 수평흐름형 습지에는 Phragmite australis를 식재하였을 경우 각 습지의 탄소 저장량은 연간 25.57 kg/ha와 29.53 kg/ha으로 산정하였다. 선행 연구를 통한 Sedum takeminese의 탄소 저장량이 더 높은 것을 확인하였다. 인공 습지는 하수처리장에서 나오는 방류수로 운영되었기 때문에, 한국의 지하화 된 하수처리장은 하수처리장이 위치한 땅에 가장 효과적으로 인공 습지를 적용하면 연간 64,937 ton/ha의 탄소를 저장가능할 것으로 보고 있다.

키워드
인공습지
탄소
식생
하수처리장
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Information
  • Publisher :KOREA WATER RESOURECES ASSOCIATION
  • Publisher(Ko) :한국수자원학회
  • Journal Title :Journal of Korea Water Resources Association
  • Journal Title(Ko) :한국수자원학회 논문집
  • Volume : 58
  • No :8
  • Pages :637-645
  • Received Date : 2025-04-28
  • Revised Date : 2025-06-03
  • Accepted Date : 2025-06-10
  • DOI :https://doi.org/10.3741/JKWRA.2025.58.8.637
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