폐수특성 및 처리기술에 근거한 산업폐수 배출허용기준 설정체계 연구

Establishment of Effluent Limitation based on Wastewater Characteristics and Treatment Technology

  • 권오상 (국립환경과학원 상하수도연구과) ;
  • 정진영 (영남대학교 환경공학과) ;
  • 허태영 (충북대학교 정보통계학과) ;
  • 전항배 (충북대학교 환경공학과) ;
  • 이연희 (국립환경과학원 상하수도연구과) ;
  • 박상민 (국립환경과학원 상하수도연구과)
  • Kwon, Ohsang (Water Supply and Sewerage Research Division, National Institute of Environment Research) ;
  • Jung, Jinyoung (Department of Environmental Engineering, Yeungnam University) ;
  • Heo, Teayoung (Department of Statistics, Chungbuk National University) ;
  • Jun, Hangbae (Department of Environmental Engineering, Chungbuk National University) ;
  • Lee, Younhee (Water Supply and Sewerage Research Division, National Institute of Environment Research) ;
  • Park, Sangmin (Water Supply and Sewerage Research Division, National Institute of Environment Research)
  • 발행 : 2012.11.30

초록

This study contemplated domestic and other country's effluent limitation standards and suggested a methodology to establish technology-base limitation value. Current effluent limitation regulates industrial point sources discriminated by discharge flow rate and by regional distinction in Korea. Discharged $BOD_5$ load from large-scale plants(flow rate above $2,000\;m^3/day)$ exceeds 50% of overall industrial wastewater, which present rationale for discrimination based on plant size. However, regional distinction and pollutant- specific regulation might be insufficient to meet practical effectiveness of wastewater management policy, due to the nearly same limitation. Water quality data and treatment methods were investigated in hospital industry. And their distribution of effluent $BOD_5$ concentrations was statistically analyzed to suggest limitation value. Effluent $BOD_5$ concentrations showed lognormal distribution and $95^{th}$ percentile was corresponded to 87.9 mg/L, which could be suggested as tentative effluent limitation in hospital industry. The $95^{th}$ percentile of log-transformed distribution showed similar value of 86.5 mg/L. This study demonstrated reasonable methodology for establishing effluent limitation reflecting wastewater characteristic and treatment technology in separately categorized industry.

키워드

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