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http://dx.doi.org/10.5370/KIEE.2017.66.3.545

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

Kim, TaeHui (Dept. of Environmental Eng., Hoseo Univ.)
Chang, In-Soung (Dept. of Environmental Eng., Hoseo Univ.)
Jung, Jae-Hwan (KEPRI, KEPCO)
Hong, Woong ki (Dept. of Electrical Eng., Hoseo Univ.)
Lee, June-Ho (Dept. of Electrical Eng., Hoseo Univ.)
Publication Information
The Transactions of The Korean Institute of Electrical Engineers / v.66, no.3, 2017 , pp. 545-550 More about this Journal
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;
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Times Cited By KSCI : 1  (Citation Analysis)
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