Journal of Korea Society of Waste Management (한국폐기물자원순환학회지)

Korea Society of Waste Management (한국폐기물자원순환학회)
권호 표지
DOI QR코드

DOI QR Code

Effects of Current Density and Electrolyte on COD Removal Efficiency in Dyeing Wastewater Treatment by using Electro-coagulation

전기 응집법을 이용한 염색 폐수의 처리에서 전류 밀도와 전해질의 COD 제거율에 대한 영향

  • Jang, Seong-Ho (Department of Bio-Environmental Energy, Pusan National University) ;
  • Kim, Go-Eun (Department of Bio-Environmental Energy, Pusan National University) ;
  • Kang, Jeong-Hee (Department of Bio-Environmental Energy, Pusan National University) ;
  • Ryu, Jae-Yong (Department of Environment and Energy Engineering, Kyungnam University) ;
  • Lee, Won-ki (Department of Polymer Engineering, Pukyong National University) ;
  • Lee, Jae-Yong (Department of Advanced Aerospace Materials Engineering, Kyungwoon University) ;
  • Park, Jin-Sick (Department of Healthcare & Biotechnology, Kyungwoon University)
  • 장성호 (부산대학교 바이오환경에너지학과) ;
  • 김고은 (부산대학교 바이오환경에너지학과) ;
  • 강정희 (부산대학교 바이오환경에너지학과) ;
  • 류재용 (경남대학교 환경에너지공학과) ;
  • 이원기 (부경대학교 고분자공학과) ;
  • 이재용 (경운대학교 항공신소재공학과) ;
  • 박진식 (경운대학교 보건바이오학과)
  • Received : 2018.09.11
  • Accepted : 2018.10.12
  • Published : 2018.10.31
⟨ Previous Next ⟩

Abstract

In the industrial wastewater that occupies a large proportion of river pollution, the wastewater generated in textile, leather, and plating industries is hardly decomposable. Though dyeing wastewater has generally been treated using chemical and biological methods, its characteristics cause treatment efficiencies such as chemical oxygen demand (COD) and suspended solids (SS) to be reduced only in the activated sludge method. Currently, advanced oxidation technology for the treatment of dyeing wastewater is being developed worldwide. Electro-coagulation is highly adapted to industrial wastewater treatment because it has a high removal efficiency and a short processing time regardless of the biodegradable nature of the contaminant. In this study, the effects of the current density and the electrolyte condition on the COD removal efficiency in dyeing wastewater treatment by using electro-coagulation were tested with an aluminum anode and a stainless steel cathode. The results are as follows: (1) When the current density was adjusted to $20A/m^2$, $40A/m^2$, and $60A/m^2$ under the condition without electrolyte, the COD removal efficiency at 60 min was 62.3%, 72.3%, and 81.0%, respectively. (2) The removal efficiency with NaCl addition was 7.9% higher on average than that with non-addition at all current densities. (3) The removal efficiency with $Na_2SO_4$ addition was 4.7% higher on average than that with non-addition at all current densities.

Keywords

References

  1. Kim, Y. K. and Oh, M. Y. : Treatment of textile wastewater by electrocoagulation, Journal of Korean Society of Environmental Enginners, Vol. 22, No. 8, pp. 1429-1436 (2000)
  2. Jeon, B. Y. : Removal characteristic of the color and COD in electrolytic treatment of dye wastewater, M. S. Dissertation, Dankkook University, Korea (1997).
  3. Lee, J. H. and Yeon, M. H. : Removal of dye wastewater by electrolysis, Journal of the Korean Society for Environmental Analysis, Vol. 5, No. 1, pp. 63-67 (2002)
  4. Jung, S. P. : Practical implementation of microbial fuel cells for bioelectrochemical wastewater treatment, Journal of the Korean Society of Urban Environment, Vol. 13, No. 2, pp. 93-100 (2013)
  5. Jeong, J. S., Jung, Y. S., Lee, K. D. and Lee, J. B. : Removal characteristics of total nitrogen and organic matters in pigment wastewater by combined anoxic/oxic process with powdered activated carbon addition and electrolysis process, Journal of Korean Society Environmental Engineers, Vol. 26, No. 5, pp. 579-587 (2004)
  6. Lee, M. K., Kim, C. Y., Park, J. H. and Cha, G. C. : Removal of organics and ammonia nitrogen from tannery wastewater by electrochemical oxidation process, Journal of Korea Society on Water Environment, Vol. 16, No. 1, pp. 101-110 (2000)
  7. Lee, T. G. and Ku, B. H. : A study on wastewater treatment for organic matters using electro coagulation oxidation system, Journal of Korean Society of Water Science and Technology, Vol. 18, No. 3, pp. 49-59 (2010)
  8. Jang, S. H., Kim, G. E., Bae, J. M., Yi, P. I., Sivakumar, S., Jung, E. S., Lee, J. Y., Park, J. S. and Ryu, J. Y. : Treatment of organic matter wasted soluble cutting fluids (SCF) by using stainless electrode, Journal of Korea Society of Waste Management, Vol. 34, No. 8, pp. 761-767 (2017) https://doi.org/10.9786/kswm.2017.34.8.761
  9. Oh, S. H. : A study on waste treatment using an application of electrocoagulation, M. S. Dissertation, Inje University, Korea (2011)
  10. Kim, S. K., Park, S. W. and Hong, D. I. : A study on dye wastewater treatment using the electrolysis, Journal of Environmental Sciences Society, Vol. 8, No. 4, pp. 539-545 (1999)
  11. Seong, H. S. : Research on continuous mode livestock wastewater treatment using electric coagulation/oxidation, Ph. D. Dissertation, Keimyung University, Korea (2008)
  12. Jang, S. H., Jeong, Y. B., Bae, J. M., Sivakumar, S., Jung, E. S., Park, J. S., Hong, S. H. and Lee, S. H : Removal of COD from wasted soluble cutting fluids (SCF) using Al electrode, Journal of Korean Society of Water Science and Technology, Vol. 25, No. 5, pp. 47-56 (2017)
  13. Kim, D. S. and Park, Y. S. : Electrochemical degradation of phenol by electro-fenton process, Journal of Environmental Health Sciences, Vol. 35, No. 3, pp. 201-208 (2009)