DOI QR코드

DOI QR Code

A Study on Calcium Ion Reduction in Power Plant Water using High Voltage Impulse

고전압 임펄스를 활용한 발전용수 칼슘농도 저감에 관한 연구

  • Received : 2017.01.17
  • Accepted : 2017.02.07
  • Published : 2017.03.01

Abstract

As an alternate technique for water softening, high voltage impulse (HVI) is introduced and verified if it can control the $CaCO_3$ scale formation in industrial water treatment. After HVI was applied to the artificial hard water containing $100{\pm}5mg/L$ $Ca^{2+}$ for 4 hours, the $Ca^{2+}$ concentration and the electrical conductivity were measured. The concentration of $Ca^{2+}$ was reduced from 94.5 to 86.3 mg/L (8.7% reduction) after 4 hour contact of HVI under 5 kV condition. The $Ca^{2+}$ was decreased from 92 to 77.7 mg/L (15.6% reduction) at 8kV and from 90.1 to 75.4 mg/L (16.3% reduction) at 12 kV condition. Both of the contact time and the applied voltage were important parameters affecting the calcium ion reduction. With these results, it was verified that HVI technique could be potential candidate for control of $CaCO_3$ scale formation.

Keywords

Calcium carbonate;Scale;High voltage impulse;Softening

References

  1. Alimi Fathi, Tlili Mohamed, Gabrielli Claude, Georges Maurin, Ben Amor Mohamed, "Effect of a magnetic water treatment on homogeneous and heterogeneous precipitation of calcium carbonate," Water Res., 40, 1941-1950, 2006 https://doi.org/10.1016/j.watres.2006.03.013
  2. Leonard D. Tijing, D.H. Lee, D.W. Kim, Y.I. Cho, C.S Kim, "Effect of high-frequency electric fields on calcium carbonate scaling", Desalination 279 pp. 47-53, 2011 https://doi.org/10.1016/j.desal.2011.05.072
  3. Yong Yang, Alexander Gutsol, Alexander Fridman, Young I. Cho, "Removal of $CaCO_3$ scales on a filter membrane using plasma discharge in water", Int J Heat Mass Transf, 52, pp. 4901-4906, 2009 https://doi.org/10.1016/j.ijheatmasstransfer.2009.05.025
  4. Yong Yang, Hyoungsup Kim, Andrey Starikovskiy, Alexander Fridman, Young I. Cho, "Application of pulsed spark discharge for calcium carbonate precipitation in hard water", Water Res., 44, pp. 3659-3668, 2010 https://doi.org/10.1016/j.watres.2010.04.024
  5. Yong Yang, Young I. Cho, Alexander Fridman, "Plasma discharge in liquid", CRC Press, New York, pp.111, 2011
  6. Seon-Hee Yang, In-Soung Chang, "Control of scale formation using high voltage impulse", Journal of the Korea Academia-Industrial cooperation Society, Vol. 16, No. 3, pp. 2301-2307, 2015 https://doi.org/10.5762/KAIS.2015.16.3.2301
  7. Javier Raso, Volker Heinz, "Pulsed electric fields technology for the food industry", Springer, Spain, pp. 9, 2006
  8. Won Tae Kim, Cheolho Bai, Young I. Cho, "A study of $CaCO_3$ fouling with a microscopic imaging technique", Int J Heat Mass Transf, 45, pp. 597-607, 2002 https://doi.org/10.1016/S0017-9310(01)00166-1
  9. Andrew D. Eaton, Lenore S. Clesceri, Arnold E. Greenberg "Standard Method for the Examination of Water and Wastewater", 19th edition, APHA, AWWA, WEF, USA 1995

Acknowledgement

Supported by : 한국서부발전