Journal of Korean Society of Water and Wastewater (상하수도학회지)

The Korean Society of Water and Wastewater (대한상하수도학회)
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Enhancement of biodegradability of the Refractory Organic Substances in Aqueous Solution with Discharged Water Generating (DWG) System

방전시스템(Discharged Water Generator)을 이용한 난분해성 물질의 생분해능 향상에 관한 연구

  • 여인호 (한국과학기술원 건설 및 환경공학과) ;
  • 류승민 (한국과학기술원 건설 및 환경공학과) ;
  • 박희경 (한국과학기술원 건설 및 환경공학과)
  • Received : 2005.10.13
  • Accepted : 2005.12.20
  • Published : 2006.02.15
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Abstract

Innovated technique to oxidize pollutants has been developed. The technique for this study uses plasma discharge in 2-phase (Air-Water) and is called Discharged Water Generating (DWG) system. It produces electric arc which generates not only the physical decomposing power against the pollutants but also oxidants to sterilize pollutants depending on the inlet gas species. These physical and chemical products play an important role in COD decrease and biodegradability enhancement. The enhancement of biodegradability for the refractory organic substances in aqueous solution was estimated in this study. Argon discharge reduced NBDCOD of EDTA from 58.7mg/L to 38.8mg/L, but oxygen discharge and ozonation reduced it to 37.74mg/L and 38.73mg/L respectively. Furthermore, Argon discharge changed 1181mg/L of NBDCOD of dye effluent into 606mg/L but oxygen discharge and ozonation changed it into 888mg/L and 790mg/L respectively.

Keywords

References

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