Journal of Korean Society of Environmental Engineers (대한환경공학회지)

Korean Society of Environmental Engineers (대한환경공학회)
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Sampling Survey of Hazardous Water Pollutants in Industrial Wastewater Treatment Plants

산업단지 폐수종말처리장의 특정수질유해물질 유입 및 방류 현황조사

  • Park, Soo-Hyung (Department of Environmental Engineering, Kumoh National Institute of Technology) ;
  • Jung, Jin-Young (Department of Environmental Engineering, Yeungnam University) ;
  • Kim, Jaehoon (National Institute of Environmental Research) ;
  • Lee, Wontae (Department of Environmental Engineering, Kumoh National Institute of Technology)
  • 박수형 (금오공과대학교 환경공학과) ;
  • 정진영 (영남대학교 환경공학과) ;
  • 김재훈 (국립환경과학원) ;
  • 이원태 (금오공과대학교 환경공학과)
  • Received : 2015.04.07
  • Accepted : 2015.11.30
  • Published : 2015.10.31
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Abstract

Sampling campaigns were conducted for hazardous chemicals and heavy metals in influents and effluents of industrial wastewater treatment plants (WWTPs) in Korea for best management practices (BMPs) of those pollutants through the plants and the receiving water bodies. Twenty seven WWTPs, receiving wastewater from industrial complexes and treating more than $2,000m^3/day$, were selected for the sampling campaign. Influents and effluents of each WWTPs were sampled once a month (total three times per plant) between July and September, 2012, and analyzed for 22 hazardous water pollutants among 28 regulated for effluents limits in Korea. Concentrations of mercury, arsenic, 1,1-dichloroethylene, and benzene in the influents were relatively higher; concentrations of mercury and arsenic in effluents were relatively higher than those of other pollutants. Most of the hazardous chemicals and heavy metals were removed (including phase transfer) more than 60% through the treatment processes except for selenium (30% removal) and 1,4-dioxane (18% removal).

본 연구는 국내 산업단지 폐수종말처리장의 유입수 및 방류수에 존재하는 특정수질유해물질 농도분포 현황을 조사하여 폐수종말처리장으로부터 수계로 배출되는 특정수질유해물질의 효율적인 관리방안을 마련하는 기초자료를 확보하기 위해 수행되었다. 실태조사는 산업단지에 위치하고 실제 처리 및 방류량 기준 $2,000m^3$/일 이상 규모인 27개 폐수종말처리장을 대상으로 진행하였다. 시료채취는 2012년 7~9월에 걸쳐 각 처리장별로 3회(월 1회) 실시하였고, 관리대상 특정수질유해물질 28개 항목 중 22개에 대하여 분석하였다. 산업단지 폐수종말처리장 유입수에서는 수은, 비소, 1,1-디클로로에틸렌, 벤젠 등이 특례지역기준대비 높은 농도로 검출되었고, 방류수에서는 수은, 비소 등이 청정지역기준대비 높은 농도로 검출되었다. 폐수종말처리장의 특정수질유해물질 평균 제거율(상전이 포함)은 셀레늄(30%), 1,4-다이옥산(18%)을 제외하고는 60%이상을 나타냈다.

Keywords

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