Clean Technology (청정기술)

The Korean Society of Clean Technology (한국청정기술학회)
권호 표지
DOI QR코드

DOI QR Code

Effects of Operating Parameters on the Removal Performance of Ammonia Nitrogen by Electrodialysis

전기투석에 의한 암모니아성질소의 제거 시 운전인자의 영향

  • Yoon, Tae-Kyung (Department of Environmental Engineering, Dong-eui University) ;
  • Lee, Gang-Choon (Department of Chemical Engineering, Dong-eui University) ;
  • Jung, Byung-Gil (Department of Environmental Engineering, Dong-eui University) ;
  • Han, Young-Rip (Environmental Problem Research Institute, Dong-A University) ;
  • Sung, Nak-Chang (Department of Environmental Engineering, Dong-A University)
  • Received : 2011.10.13
  • Accepted : 2011.10.27
  • Published : 2011.12.30
Download PDF
⟨ Previous Next ⟩

Abstract

To evaluate the feasibility of electrodialysis for ammonia nitrogen removal from wastewater, the effects of operating parameters such as diluate concentration, applied voltage and flow rate on the removal of ammonia nitrogen were experimentally estimated. The removal rate was evaluated by measuring the elapsed time for ammonia nitrogen concentration of diluate to reach 20 mg/L. Limiting current density (LCD) linearly increased with ammonia nitrogen concentration and flow rate. The elapsed time was linearly proportional to initial concentration of diluate. Due to relatively large equivalent ion conductivity and ion mobility of ammonia nitrogen, the removal rate increased consistently with flow rate. Increase in the applied voltage gave positive effect to removal rate. From the operation of the electrodialysis module used in this research, the flow rate of 3.2 L/min and 80~90% of applied voltage for LCD are recommended as the optimum operating condition for the removal from high concentrate ammonia nitrogen solution.

고농도의 암모니아성질소를 함유하는 폐수의 처리에 전기투석공정의 적용성이 실험적으로 평가되었다. 처리 성능은 전기투석공정의 운전인자 중 유입농도, 운전전압, 그리고 유속이 암모니아성질소의 제거효율에 미치는 영향으로 측정되었다. 한계전류밀도는 유입농도와 유입유속이 증가함에 따라 선형적으로 증가하였고, 유입농도에 따라 목표농도에 도달하는 시간은 직선적인 비례관계를 보였다. 상대적으로 큰 암모니아성질소의 이온당량전도도와 이온이동도로 인하여 유입유속의 증가는 제거속도를 지속적으로 증가시켰다. 또한 운전전압의 증가에 따라 제거속도는 증가하였다. 본 연구에 사용된 전기투석모듈에서 고농도의 암모니아성질소를 제거하는 운전조건으로 유입유속은 3.2 L/min, 운전전압은 한계전류밀도에 해당하는 전압의 80~90%가 추천된다.

Keywords

References

  1. Jung, J. Y., Chung, Y. C., Shin, H. S., and Son, D. H., "Enhanced Ammonia Nitrogen Removal Using Consistent Biological Regeneration and Ammonium Exchange of Zeolite in Modified SBR Process," Water Research, 38, 347-354 (2004). https://doi.org/10.1016/j.watres.2003.09.025
  2. Liao, P. H., Chen, A., and Lo, K. V., "Removal of Nitrogen from Swine Manure Wastewater by Ammonia Stripping," Bioresource Technol., 54, 17-20 (1995). https://doi.org/10.1016/0960-8524(95)00105-0
  3. Li, X. Z., Zhao, Q. L., and Hao, X. D., "Ammonium Removal from Landfill Leachate by Chemical Precipitation," Waste Management, 19, 409-415 (1999). https://doi.org/10.1016/S0956-053X(99)00148-8
  4. Ali, N., Halim, N. S. A., Jusoh, A., and Endut, A., "The formation and Characterisation of an Asymmetric Nanofiltration Membrane for Ammonia-nitrogen Removal: Effect of Shear Rate," Bioresource Technol., 101, 1459-1465 (2010). https://doi.org/10.1016/j.biortech.2009.08.070
  5. Lee, H. H., and Phae, C. G., "Removal Characteristic of Ammonia Nitrogen and Behavior of Nitrogen in Synthetic Waste-water Using Leclercia Adecarboxylata," J. of KSEE, 29(4), 460-465 (2007).
  6. Park, S. I, Cheong, K. H., Kim, H. Y., and Paik, K. J., "Removal of NH4-N from Synthetic Wastewater using Soil Column," Korean J. Environ. Health, 31(4), 280-286 (2005).
  7. Yoon, T., Noh, B., and Moon, B., "Parametric Studies on the Performance of Cation Exchange for the Ammonium Removal," Korean J. Chem. Eng., 17(6), 652-658 (2000). https://doi.org/10.1007/BF02699113
  8. Pontius, F. W., "Nitrate and Cancer. Is there a Link?," J. Am. Water Works Ass., 85(4), 12-14 (1993).
  9. Kim, W. H., and Lee, S. H., "Ammonium Ion Removal and Regeneration for Zeolite Filtration in Drinking Water Treatment," J. Environ. Sci., 13(7), 661-665 (2004).
  10. Martin, C. J., Kartinen, Jr. E. O., and Condon, J., "Examination of Processes for Multiple Contaminant Removal from Groundwater," Desalination, 102, 35-45 (1995). https://doi.org/10.1016/0011-9164(95)00039-5
  11. Strathmann, H., Ion Exchange Membrane Separation Processes, Membrane Science and Technology Series, 9, Elsevier B.V., Amsterdam, Netherlands, 2004, pp. 147-184.
  12. Sata, T., Ion Exchange Membranes: Preparation, Characterization, Modification and Application, The Royal Society of Chemistry, Cambridge, UK, 2004, pp. 215-250.
  13. Kim, K. S., Kim, S. H., and Jung, I. H., "The Characteristics of Ni Plating Rinse Wastewater Treatment by a Electrodialysis Apparatus," J. Korean Soc. Environ. Anal., 4(4), 241-249 (2001).
  14. Cowan, D. A., and Brown, J. H., "Effect of Turbulent on Limiting Current in Electrodialysis Cells," Ind. Eng. Chem., 51, 1445-1448 (1959). https://doi.org/10.1021/ie50600a026
  15. Tanaka, Y., "Concentration Polarization in Ion-exchange Membrane Electrodialysis-the Events Arising in a Flowing Solution in a Desalting Cell," J. Membrane Sci., 216, 149-164 (2003). https://doi.org/10.1016/S0376-7388(03)00067-X
  16. Tanaka, Y., "Current Density Distribution, Limiting Current Density and Saturation Current Density in an Ion-exchange Membrane Electrodialyzer," J. Membrane Sci., 210, 65-75 (2002). https://doi.org/10.1016/S0376-7388(02)00376-9
  17. Lee, G. H., and Lee, G. C., "Effects of Operating Parameters on the Removal Performance of Nitrate-nitrogen by Electrodialysis," Clean Technol., 15(4), 280-286 (2009).
  18. Bard, A. J., and Faulkner, L. R., Electrochemical Methods: Fundamentals and Applications, John Wiley & Sons, Inc., 1980, pp. 62-68.
  19. Barthel, J. M. G., Krienke, H., and Kunz, W., Physical Chemistry of Electrolyte Solutions: Modern Aspects, Springer, New York, 1998, pp. 70-74.