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


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.


Calcium carbonate;Scale;High voltage impulse;Softening


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