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Evaluation of Treatment Efficiencies of Pollutants under Different Pollutant Fractions in Activated Sludge-Constructed Wetland System for Treating Piggery Wastewater

활성슬러지-인공습지 공법에 의한 돈사폐수처리시스템에서 오염물질의 분획별 정화효율 평가

  • Kim, Seong-Heon (Division 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) ;
  • Park, Jong-Hwan (Division of Applied Life Science (BK21 Program) & Institute of Agriculture and Life Science, GyeongSang National University) ;
  • Lee, Choong-Heon (Division 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) ;
  • Ha, Yeong-Rae (Division 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 (Division of Applied Life Science (BK21 Program) & Institute of Agriculture and Life Science, GyeongSang National University)
  • 김성헌 (경상대학교 응용생명과학부(Bk21 농생명산업 글로벌 인재 육성 사업단)& 농업생명과학원) ;
  • 서동철 (순천대학교 생물환경학과) ;
  • 박종환 (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) ;
  • 하영래 (경상대학교 응용생명과학부(Bk21 농생명산업 글로벌 인재 육성 사업단)& 농업생명과학원) ;
  • 조주식 (순천대학교 생물환경학과) ;
  • 허종수 (경상대학교 응용생명과학부(Bk21 농생명산업 글로벌 인재 육성 사업단)& 농업생명과학원)
  • Received : 2012.10.23
  • Accepted : 2012.12.05
  • Published : 2012.12.31

Abstract

BACKGROUND: To design and develop a constructed wetland for effective livestock wastewater treatment, it is necessary to understand the removal mechanisms of various types of pollutants in constructed wetlands. The objective of this study was to evaluate the treatment efficiency of pollutants under different types of fraction in constructed wetland system for treating piggery wastewater. METHODS AND RESULTS: The piggery wastewater treatment plant that consisted of activated sludge tank, aerobic and anaerobic beds was constructed. The concentration of COD(Chemical oxygen demand) in effluent by fraction was 71.5 mg/L for soluble COD, 142 mg/L insoluble COD. The concentration of SS(Suspended solid) in effluent by existing form was 102 mg/L for volatile SS, 15.5 mg/L for fixed SS. The concentration of T-N(Total nitrogen) and T-P(Total phosphorus) in effluent by existing form were 12.8 mg/L and 3.05 mg/L for dissolved form, 35.0 mg/L and 1.93 mg/L for suspended form. The removal efficiencies of COD, SS, T-N and T-P in hot season(summer and autumn) were higher than those in cold season(spring and winter). The removal efficiencies of COD, SS, T-N and T-P in effluent were 98.0, 99.0, 98.2 and 99.2% for all seasons, respectively. CONCLUSION(S): The results indicated that removal types of pollutants were insoluble COD(ICOD), volatile SS(VSS), dissolved T-N(DTN) and dissolved T-P(DTP) in constructed wetlands for treating piggery wastewater.

Keywords

Avtivated sludge;Constructed wetlands;Fraction of pollutants;Piggery wastewater

Acknowledgement

Supported by : National Research Foundation of Korea

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