離子交換設備
| 離子交換樹脂系統概述 | |
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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（復床）系統，而混床（復床）系統又通常是用在反滲透等工(gong)(gong)(gong)藝之(zhi)后用(yong)(yong)來制取(qu)超(chao)純(chun)(chun)水(shui)(shui)(shui)(shui)，高(gao)純(chun)(chun)水(shui)(shui)(shui)(shui)的終端工(gong)(gong)(gong)藝，他(ta)是目前(qian)用(yong)(yong)來制備超(chao)純(chun)(chun)水(shui)(shui)(shui)(shui)、高(gao)純(chun)(chun)水(shui)(shui)(shui)(shui)不可替代(dai)的手段之(zhi)一。其出水(shui)(shui)(shui)(shui)電(dian)(dian)導率可低于1uS/cm以下，出水(shui)(shui)(shui)(shui)電(dian)(dian)阻率達到1MΩ.cm以上，根據不同的水(shui)(shui)(shui)(shui)質及(ji)使用(yong)(yong)要求，出水(shui)(shui)(shui)(shui)電(dian)(dian)阻率可控制在(zai)1~18MΩ.cm之(zhi)間。被(bei)廣泛(fan)應用(yong)(yong)在(zai)電(dian)(dian)子、電(dian)(dian)力超(chao)純(chun)(chun)水(shui)(shui)(shui)(shui)，化(hua)工(gong)(gong)(gong)，電(dian)(dian)鍍(du)超(chao)純(chun)(chun)水(shui)(shui)(shui)(shui)，鍋爐補(bu)給水(shui)(shui)(shui)(shui)及(ji)醫藥用(yong)(yong)超(chao)純(chun)(chun)水(shui)(shui)(shui)(shui)等工(gong)(gong)(gong)業(ye)超(chao)純(chun)(chun)水(shui)(shui)(shui)(shui)，高(gao)純(chun)(chun)水(shui)(shui)(shui)(shui)的制備上。 |
| 離子交(jiao)換樹(shu)脂的工作原(yuan)理 | |
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采用離(li)(li)子(zi)交換方法，可以把(ba)水(shui)中呈離(li)(li)子(zi)態的陽(yang)、陰離(li)(li)子(zi)去除(chu)，以氯化鈉(na)(NaCl)代(dai)表水(shui)中無(wu)機鹽(yan)(yan)類，水(shui)質除(chu)鹽(yan)(yan)的基本反應可以用下(xia)列方程式表達(da)： 1、陽(yang)離子交換樹(shu)脂：R—H+Na+ R—Na+H+ 2、陰離子交換樹脂：R—OH+Cl- R—Cl+OH- 陽、陰離(li)子交換樹(shu)脂總的反應式即(ji)可寫成： RH+ROH+NaCl——RNa+RCL+H2O 由此可(ke)看出(chu)，水(shui)中的NaCl已分別被樹脂上(shang)的H+和OH-所取(qu)代，而反應生成物只有H2O，故達到了去(qu)除水(shui)中鹽的作用 |
