n.離子交換
Complete demineralization is achieved by ion exchange. 用離子交換可以獲得徹底的脫鹽效果。
Sodium chloride and hydrochloric acid are often used to regenerate spent ion exchange resins used in water purification. 氯化鈉和鹽酸常用來再生水凈化中用的廢的離子交換樹脂。
