아연 이온화 장치에 의한 물 중 탄산칼슘 스케일 생성 억제 및 제거 효과 측정

Abstract

Scale inhibition effect of the physical water treatment device that emits zinc cation in water was evaluated. The inhibition effect of scale formation was confirmed by the difference in precipitation amount of calcium carbonate prepared from calcium chloride and sodium carbonate solution with distilled or zinc ionized water. For measuring removal effect of solid calcium carbonate on the filter paper, the ground water passed through the ionizer or not was poured on the filter paper and the differences of weight loss of solid CaCO₃ were observed. In the experiments for inhibition, the addition of zinc ion did not appear to change the amount of calcium carbonate precipitate. On the other hand, zinc ion leaving the filter clumped fine calcium carbonate particles to increase turbidity, and it was estimated that scale particles expected to have grown by zinc ions were discharged by water flow. Although the concentration of zinc ions from the ionization device is only tens of ㎍/L, the exposure of zinc ions for a long period of time was expected to slowly release the scale generated on the inside wall of the pipe.