Journal of Korean Society on Water Environment (한국물환경학회지)

Korean Society on Water Environment (한국물환경학회)
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Toxicity Reduction of Wastewater from a Rubber Products Manufacturing Factory by Gamma-ray Treatment

감마선 처리를 이용한 고무공장 폐수의 생물독성 저감

  • Park, Eun-Joo (Division of Environmental Science & Ecological Engineering, Korean University) ;
  • Jo, Hun-Je (Division of Environmental Science & Ecological Engineering, Korean University) ;
  • Cho, Kijong (Division of Environmental Science & Ecological Engineering, Korean University) ;
  • Kim, Jeong-Gyu (Division of Environmental Science & Ecological Engineering, Korean University) ;
  • Jung, Jinho (Division of Environmental Science & Ecological Engineering, Korean University)
  • 박은주 (고려대학교 환경생태공학부) ;
  • 조훈제 (고려대학교 환경생태공학부) ;
  • 조기종 (고려대학교 환경생태공학부) ;
  • 김정규 (고려대학교 환경생태공학부) ;
  • 정진호 (고려대학교 환경생태공학부)
  • Received : 2006.06.14
  • Accepted : 2006.08.04
  • Published : 2006.09.30
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Abstract

Both raw wastewater and effluent from a rubber products manufacturing factory were found to be toxic to Daphnia magna though the effluent satisfied current water quality standards. Thus, in order to reduce toxicity, advanced oxidation processes (AOPs) such as gamma-ray (${\gamma}-ray$) treatment and ozonation ($O_3$) were applied. A combined ${\gamma}-rays/O_3$ treatment at 20 kGy after coagulation significantly reduced toxicity of raw wastewater, changing 48-h toxic unit (TU) value from 201.21 to 23.92. However, toxicity of treated water was higher than that of effluent (TU = 12.15). This shows limitation of gamma-ray treatment to remove toxicity of raw wastewater. In case of effluent, the combined ${\gamma}-rays/O_3$ treatment at 20 kGy efficiently decomposed toxic compounds down to non toxic level. This work strongly supports the necessity of toxicity reduction evaluation as well as toxicity-based effluent management.

Keywords

Acknowledgement

Supported by : 한국과학재단

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