Korean Journal of Soil Science and Fertilizer (한국토양비료학회지)

Korean Society of Soil Science and Fertilizer (한국토양비료학회)
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Selection of Optimum System in Constructed Wetlands for Treating the Hydroponic Waste Solution Containing Nitrogen and Phosphorus

질소 및 인 함유 폐양액 처리를 위한 최적 인공습지 시스템 선정

  • Park, Jong-Hwan (Divison of Applied Life Science (BK21 Program) & Institute of Agriculture and Life Science, GyeongSang National University) ;
  • Seo, Dong-Cheol (Department of Bio-Environmental Sciences, Sunchon National University) ;
  • Kim, Seong-Heon (Divison of Applied Life Science (BK21 Program) & Institute of Agriculture and Life Science, GyeongSang National University) ;
  • Lee, Choong-Heon (Divison of Applied Life Science (BK21 Program) & Institute of Agriculture and Life Science, GyeongSang National University) ;
  • Choi, Jeong-Ho (Division of Environmental Analysis, Korea Environment corporation) ;
  • Kim, Hong-Chul (Department of Pharmaceutical Engineering, Gyeongnam National University of Science and Technology) ;
  • Lee, Sang-Won (Department of Pharmaceutical Engineering, Gyeongnam National University of Science and Technology) ;
  • Ha, Yeong Rae (Divison of Applied Life Science (BK21 Program) & Institute of Agriculture and Life Science, GyeongSang National University) ;
  • Cho, Ju-Sik (Department of Bio-Environmental Sciences, Sunchon National University) ;
  • Heo, Jong-Soo (Divison of Applied Life Science (BK21 Program) & Institute of Agriculture and Life Science, GyeongSang National University)
  • 박종환 (경상대학교 응용생명과학부 (Bk21 농생명산업 글로벌 인재 육성 사업단)& 농업생명과학원) ;
  • 서동철 (순천대학교 생물환경학과) ;
  • 김성헌 (경상대학교 응용생명과학부 (Bk21 농생명산업 글로벌 인재 육성 사업단)& 농업생명과학원) ;
  • 이충헌 (경상대학교 응용생명과학부 (Bk21 농생명산업 글로벌 인재 육성 사업단)& 농업생명과학원) ;
  • 최정호 (한국환경공단 환경분석처) ;
  • 김홍출 (경남과학기술대학교 제약공학과) ;
  • 이상원 (경남과학기술대학교 제약공학과) ;
  • 하영래 (경상대학교 응용생명과학부 (Bk21 농생명산업 글로벌 인재 육성 사업단)& 농업생명과학원) ;
  • 조주식 (순천대학교 생물환경학과) ;
  • 허종수 (경상대학교 응용생명과학부 (Bk21 농생명산업 글로벌 인재 육성 사업단)& 농업생명과학원)
  • Received : 2012.08.30
  • Accepted : 2012.09.21
  • Published : 2012.10.30
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Abstract

In order to develop constructed wetlands for treating hydroponic wastewater in greenhouse, actual constructed wetlands were used the obtained optimum condition in previous study, and the removal rate of pollutant in the water according to 4 kinds connection method of piping such as system A (UP-UP stream), system B (UP-DOWN system), system C (DOWN-UP stream) and system D (DOWN-DOWN stream) were investigated. Removal rate of biochemical oxygen demand (BOD), chemical oxygen demand (COD), suspended solids (SS), total nitrogen (T-N) and total phosphorus (T-P) by system A (UP-UP stream) connection method in actual constructed wetlands were slightly higher than other systems. At the system A, the removal rate of BOD, COD, SS, T-N and T-P were 88, 77, 94, 54 and 94%, respectively. Under different hydroponic wastewater loading, the removal rates of pollutants were higher in the order of $75L\;m^{-2}day^{-1}{\fallingdotseq}150L\;m^{-2}day^{-1}$ $$\geq_-$$ $300L\;m^{-2}day^{-1}$. Therefore, optimum connection method was system A for treating hydroponic wastewater in greenhouse.

질소 및 인 함유 폐양액 처리를 위한 최적 인공습지 시스템을 선정하기 위해 처리조의 연결방식을 달리하여 최적 system을 선정하였고, 선정된 최적조건하에서 폐양액 부하량에 대한 적응성을 평가하였다. 현장 폐양액처리장에서 시스템별 정화효율을 평가한 결과 system A의 BOD, COD, SS, T-N 및 T-P의 처리효율은 각각 88, 77, 94, 54 및 94%로서 다른 시스템에 비해 가장 높은 정화효율을 보였다. 현장 폐양액처리장에서 폐양액 부하량별 수처리 효율을 조사한 결과 system A의 BOD, COD, SS, T-N 및 T-P의 처리효율은 폐양액 부하량에 따라 별 차이 없이 각각 87-89, 76-79, 93-94, 52-55 및 91-94%로 전반적으로 높고 안정적으로 처리되었다. 하지만 T-N의 처리효율은 55% 정도 수준으로 폐수배출기준을 안정적으로 만족하기 위해서는 질소처리효율을 좀 더 향상시킬 필요가 있을 것으로 판단된다.

Keywords

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