Journal of Environmental Science International (한국환경과학회지)

The Korean Environmental Sciences Society (한국환경과학회)
권호 표지
DOI QR코드

DOI QR Code

Electrochemical Treatment of COD and T-N in Wastewater from Flue Gas Desulfurization Process

전해처리법에 의한 탈황폐수 중의 COD 및 총 질소 제거

  • Cha, Go-Eun (Department of Environmental Engineering, Pukyong National University) ;
  • Noh, Da-Ji (Department of Environmental Engineering, Pukyong National University) ;
  • Seo, Jeong-Hyeon (Department of Environmental Engineering, Pukyong National University) ;
  • Lim, Jun-Heok (Department of Chemical Engineering, Pukyong National University) ;
  • Lee, Tae-Yoon (Department of Environmental Engineering, Pukyong National University) ;
  • Lee, Jea-Keun (Department of Environmental Engineering, Pukyong National University)
  • Received : 2012.10.10
  • Accepted : 2013.05.27
  • Published : 2013.09.30
Download PDF
⟨ Previous Next ⟩

Abstract

This paper presents the results of the electrochemical treatment of chemical oxygen demand(COD) and total nitrogen(T-N) compounds in the wastewater generated from flue gas desulfurization process by using a lab-scale electrolyzer. With the increase in the applied current from 0.6 Ah/L to 1.2 Ah/L, the COD removal efficiency rapidly increases from 74.5% to 96%, and the T-N removal efficiency slightly increases from 37.2% to 44.9%. Therefore, it is expected that an electrochemical treatment technique will be able to decrease the amount of chemicals used for reducing the COD and T-N in wastewater of the desulfurization process compared to the conventional chemical treatment technique.

Keywords

References

  1. APHA, 2005, Standard methods for the examination of water and wastewater, 21st Ed., Port City Press, Baltimore, USA.
  2. AWWA, 1973, Water chlorination principles and practices, Colorado, USA.
  3. Chiang, L. C., Chang, J. E., Wen, T. C., 1995, Indirect oxidation effect in electrochemical oxidation treatment of landfill leachate, Water Res., 29, 671-678. https://doi.org/10.1016/0043-1354(94)00146-X
  4. Feng, C., Norio, S., Satoru, S., Takaaki, M., 2003, Development of a high performance electrochemical wastewater treatment system, J. Hazard. Mater., 103, 65-78. https://doi.org/10.1016/S0304-3894(03)00222-X
  5. Karaoglu, M. H., Ugurlu, M., 2009, Studies on UV/ NaOCl/$TiO_{2}$/Sep photocatalysed degradation of Reactive Red 195, J. Hazard. Mater., 174, 864-871.
  6. Koparal, A. S., Ogutveren, U. B., 2002, Removal of nitrate from water by electroreduction and electrocoagulation, J. Hazard. Mater., 89, 83-94. https://doi.org/10.1016/S0304-3894(01)00301-6
  7. Kraft, A., Blaschke, M., Kreysig, D., Sandt, B., Schroeder, F., Rennau, J., 1999, Electrochemical water disinfection. Part II: Hypochlorite production from portable water, chlorine consumption and the problem of calcareous deposits, J. Appl. Electrochem., 29, 895-902. https://doi.org/10.1023/A:1003654305490
  8. Li, H. L., Robertson, D. H., Chambers, J. Q., Hobbs, D. T., 1988, Electrochemical reduction of nitrate and nitrite in concentrated sodium hydroxide at platinum and nickel electrodes, J. Electrochem. Soc., 135(5), 1154-1158. https://doi.org/10.1149/1.2095900
  9. Mendia, L., 1982, Electrochemical processes for wastewater treatment, Water Res., 14, 331-344.
  10. Paidar, M., Rousar, I., Bouzek, K., 1999, Electrochemical removal of nitrate ions in waste solutions after regeneration of ion exchange columns, J. Appl. Electrochem., 29, 611-617. https://doi.org/10.1023/A:1026423218899
  11. Pickett, D. J., 1977, Electrochemical reactor design, Elsevier scientific publishing company, New York, 7-9.
  12. Rajkumar. D., Palanivelu. K., 2004, Electrochemical treatment of industrial wastewater, J. Hazard. Mater., 113, 123-129. https://doi.org/10.1016/j.jhazmat.2004.05.039
  13. Rajkumar, D., Song, B. J., Kim, J. G., 2007, Electrochemical degradation of Reactive Blue 19 in chloride medium for the treatment of textile dyeing wastewater with identification of intermediate compounds, Dyes and Pigments, 72, 1-7. https://doi.org/10.1016/j.dyepig.2005.07.015
  14. Yan, J. F., Nguyen, T. V., White, R. E., Griffin, R. B., 1993, Mathematical modeling of the formation of calcareous deposits on cathodically protected steel in seawater, J. Electrochem. Soc., 140, 733-742. https://doi.org/10.1149/1.2056150