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Removal Efficiencies of Cations in Microcosm-scale Wetlands of Different types

소규모 인공습지에서 습지형태에 따른 양이온 제거 효율의 변이

  • Kang, Hojeong (School of Civil and Environmental Engineering, Yonsei University) ;
  • Song, Keunyea (School of Biological Sciences, University of Trent)
  • Published : 2014.03.05

Abstract

Constructed wetlands have widely been employed to improve water quality, but only a few studies have assessed removal efficiencies of cations in pond-type and marsh-type wetlands comparatively. This study conveys removal efficiencies of cations in those types of wetlands. High removal efficiencies of $NH_4{^+}$, $K^+$, $Mg^{2+}$ were observed, which appeared to be related to plant uptake and soil absorption. In contrast, release of $Ca^{2+}$ was distinctive in pond-type wetland of which mechanism is yet to be revealed.

습지를 건설하여 수질 개선의 목적으로 활용하는 연구가 활발히 진행되고 있으나, 인공습지의 대표적인 형태인 연못형(Pond-type)과 소택지형 (Marsh-type)에서 제거되는 양이온의 처리 효율을 비교한 연구는 많지 않다. 본 논문에서는 마이크로코즘 규모로 건설된 인공습지에서 제거되는 양이온들의 처리 효율을 습지 형태 및 이온 별로 비교하는 내용을 다루고 있다. 양이온 중 $NH_4{^+}$, $K^+$, $Mg^{2+}$등은 높은 처리 효율을 보였고, 이는 습지의 식물에 의한 흡수, 토양 흡착 등에 기인한 것으로 보였다. 그러나 연못형 습지의 경우 오히려 $Ca^{2+}$의 방출이 관찰되었으나 그 정확한 기작은 파악할 수 없었다.

Keywords

References

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Cited by

  1. Vegetation and Water Characteristics of an Eco-technological Water Purifying Biotope in Yongin vol.20, pp.4, 2018, https://doi.org/10.17663/jwr.2018.20.4.432