Ecology and Resilient Infrastructure

Korean Society of Ecology and Infrastructure Engineering (응용생태공학회)
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Phosphate Adsorption Characteristics of a Filter Medium, Adphos, and Its Efficiency by the Filtration Experiment Combined with the Vegetation Mat

Adphos 여재의 인 흡착특성과 식생 매트와 결합한 여과실험에 의한 효율

  • Kim, Ji Ah (Department of Applied Environmental Science, Kyung Hee University) ;
  • Joo, Gwang Jin (Department of Applied Environmental Science, Kyung Hee University) ;
  • Choi, I Song (Department of Environmental Science and Engineering, Kyung Hee University) ;
  • Chang, Kwang Hyeon (Department of Environmental Science and Engineering, Kyung Hee University) ;
  • Oh, Jong Min (Department of Environmental Science and Engineering, Kyung Hee University)
  • 김지아 (경희대학교 환경응용과학과) ;
  • 주광진 (경희대학교 환경응용과학과) ;
  • 최이송 (경희대학교 환경학 및 환경공학과) ;
  • 장광현 (경희대학교 환경학 및 환경공학과) ;
  • 오종민 (경희대학교 환경학 및 환경공학과)
  • Received : 2016.11.28
  • Accepted : 2016.12.20
  • Published : 2016.12.31
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Abstract

The purpose of this study is to analyze phosphate adsorption characteristic of the filter media applied in water purification technology. And it is also to observe the removal efficiency of the technology that was developed by combining the purification abilities of filter media and the vegetation mat. The filter media, Adphos, is the subject of this study. The result of adsorption test shows that $PO_4{^{3-}-P}$ adsorption characteristics of Adphos is determined by the Langmuir isotherm model fitting and the $q_m$ (maximum adsorption amount) value is calculated as 1.162 mg/g. To verify the removal efficiency of the purification technology, a lab-scale reactor, including a 400 mm depth of filter bed filled by Adphos, was manufactured. Yellow flag Iris (Iris pseudacours L.) was planted on the vegetation bed and the coir-roll was used to fix the root of vegetation. The reactor ran 8 hours per day over 71 days, and the results of filtration experiment show that average removal efficiency of SS, T-N and T-P were calculated as 94%, 41% and 64% respectively. With these results, it was proved that the purification technology is highly effective. And for the long-time use, a maintenance guide is also required.

본 연구에서는 여재와 식생을 결합한 수질정화기술에 적용된 여재의 흡착특성을 파악하고, 장기 여과실험에 따른 제거효율의 추이를 관찰하였다. 연구대상 여재는 Adphos이며 인산염 인 ($PO_4{^{3-}-P}$) 흡착특성 분석결과 Adphos는 Langmuir 흡착모델에 적합한 것으로 분석되었고 이 모델에 적용 시 인산염 최대흡착량 ($q_m$)은 1.162 mg/g 으로 산출되었다. 정화기술의 효율을 검증하기 위하여 Adphos의 두께를 400 mm로 충진한 실험실 규모 반응기를 제작하였다. 식생부는 노랑꽃창포 (Iris pseudacours L.)를 식재하였고 식물의 활착을 위한 기반재는 야자섬유 롤 (coir roll)을 사용하였다. 일일 8시간씩 71일간 여과실험을 지속한 결과 융복합형 반응기의 평균 제거효율은 SS, T-N, T-P 각각 94%, 41%, 64%로 나타났다. 실험 결과에 따라 정화기술의 성능이 우수한 것으로 사료되며, 부도기술의 장기 적용을 위한 유지관리방안 마련이 요구된다.

Keywords

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