Journal of Korean Society on Water Environment (한국물환경학회지)

Korean Society on Water Environment (한국물환경학회)
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Evaluation on Design Factors of Electrolytic Flotation Reactor by Measuring Polarization Curve

분극곡선 측정을 통한 전해부상조의 설계인자 평가

  • Lim, Bong-Su (Department of Enviornmentmental Engineering, Deajeon University) ;
  • Jin, Jing-Zhu (Department of Enviornmentmental Engineering, Deajeon University) ;
  • Choi, Chan-Soo (Department of Applied Chemistry, Deajeon University)
  • Received : 2006.11.28
  • Accepted : 2007.02.26
  • Published : 2007.03.30
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Abstract

This study was carried out to obtain the optimum design factors for an eletrolytric flotation reactor. When the effluent of the leachate treatment facility was treated under the condition of 10 volts, 30 minutes, at the Al-Al electrode system; COD removal efficiency was 45%, and total phosphorus removal efficiency was 98%. The high removal efficiency was caused by the fact that phosphate was removed by leaching $Al^{3+}$ from two electrodes. The leachate containing high ammonium nitrogen concentration was treated by a batch test under the condition of 60 minutes reaction time and added chloride ion; ammonium nitrogen removal efficiency was 89%. This high efficiency was affected by added chloride ion to wastewater. To find the optimum current density and voltage of the leachate containing chloride ion (ratio of $Cl^-/NH_4-N$ is 11) a electrochemical polarization curve was used. These values were found to be $4.5mA/cm^2$ and about 2.1 V, respectively. When C-Al electrode system was used at a batch test, the total nitrogen removal efficiency was increased by 1.8 to 3.3 times, compared to Al-Al electrode system due to high $Cl_2$ gas production.

Keywords

Acknowledgement

Supported by : 한국과학재단

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