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離子交換樹脂系統概述
離子交換系統是通過陰、陽離子交換樹脂對水中的各種陰、陽離子進行置換的一種傳統水處理工藝，陰、陽離子交換樹脂按不同比例進行搭配可組成離子交換陽床系統，離子交換陰床系統及離子交換混床系統，而混床系統又通常是用在反滲透等水處理工藝之后用來制取超純水，高純水的終端工藝，他是目前用來制備超純水、高純水不可替代的手段之一。其出水電導率可低于1uS/cm以下，出水電阻率達到1MΩ.cm以上，根據不同的水質及使用要求，出水電阻率可控制在1~18MΩ.cm之間。被廣泛應用在電子、電力超純水，化工，電鍍超純水，鍋爐補給水及醫藥用超純水等工業超純水，高純水的制備上。
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| 3T/H去離子水設備 | 10T/H去離子水設備 |
離子交換樹脂系統工作原理
采用離子交換方法，可以把水中呈離子態的陽、陰離子去除，以氯化鈉(NaCl)代表水中無機鹽類，水質除鹽的基本反應可以用下列方程式表達：
1、陽離子交換樹脂：R—H+Na+ R—Na+H+
2、陰離子交換樹脂：R—OH+Cl- R—Cl+OH-
陽、陰離子交換樹脂總的反應式即可寫成：
RH+ROH+NaCl——RNa+RCL+H2O
由此可看出，水中的NaCl已分別被樹脂上的H+和OH-所取代，而反應生成物只有H2O，故達到了去除水中鹽的作用。
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