一文讀懂混床陰陽(yáng)離子交換樹(shù)脂的幾大知識(shí)點(diǎn)-天津市津達(dá)正通環(huán)?？萍加邢薰?/title> <META NAME="Keywords" CONTENT="混床陰陽(yáng)離子交換樹(shù)脂"> <link href="/skins/387392/css/css.css" rel="stylesheet" type="text/css"> <script type="text/javascript" src="/skins/387392/js/jquery.pack.js"></script> <script type="text/javascript" src="/skins/387392/js/jquery.SuperSlide.js"></script> <script type="application/ld+json"> { "@context": "https://ziyuan.baidu.com/contexts/cambrian.jsonld", "@id": "http:///Article-2360900.html", "title": "一文讀懂混床陰陽(yáng)離子交換樹(shù)脂的幾大知識(shí)點(diǎn)", "pubDate": "2020-09-04T17:50:49", "upDate": "2020-09-04T17:50:49" }</script> <script language="javaScript" src="/js/JSChat.js"></script><script language="javaScript">function ChatBoxClickGXH() { DoChatBoxClickGXH('https://chat.chem17.com',390069) }</script><script>!window.jQuery && document.write('<script src="https://public.mtnets.com/Plugins/jQuery/2.2.4/jquery-2.2.4.min.js">'+'</scr'+'ipt>');</script><script 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target="_blank"><span style="color: rgb(0, 0, 0);"><strong><span style="font-size: 16px;">混床陰陽(yáng)離子交換樹(shù)脂</span></strong></span></a><span style="font-size: 16px;">的預(yù)處理：</span></div><div><span style="font-size: 16px;"><br /></span></div><div><span style="font-size: 16px;"> 由于運(yùn)輸及保管等各方面的原因，容易使新<strong>混床陰陽(yáng)離子交換樹(shù)脂</strong>產(chǎn)生脫水。憑肉眼和手感均可發(fā)現(xiàn)。如遇此種情況，為避免樹(shù)脂與水和其它再生液的接觸而產(chǎn)生爆裂破碎，造成不必要的浪費(fèi)，必須將此類樹(shù)脂浸泡在8%的食鹽水中16小時(shí)左右（浸泡時(shí)好經(jīng)常攪拌），使樹(shù)脂充分膨脹，經(jīng)清水漂洗至無(wú)鹽味后方可使用。沒(méi)有上述現(xiàn)象，則樹(shù)脂不必進(jìn)行預(yù)處理。</span></div><div><span style="font-size: 16px;"><br /></span></div><div><span style="font-size: 16px;"> <strong>混床陰陽(yáng)離子交換樹(shù)脂</strong>裝填：</span></div><div><span style="font-size: 16px;"><br /></span></div><div><span style="font-size: 16px;"> 國(guó)內(nèi)混床設(shè)備的樹(shù)脂裝填高度為陽(yáng)樹(shù)脂5（6）00mm，陰樹(shù)脂10（2）00mm，非再生態(tài)時(shí)（即陽(yáng)樹(shù)脂為鈉型，陰樹(shù)脂為氯型時(shí)）陽(yáng)樹(shù)脂裝填高度不能高過(guò)中排口，但也不宜低于中排口5cm。陰陽(yáng)樹(shù)脂裝填比例為2：1（或1.5：1）。001×7（732）陽(yáng)離子交換樹(shù)脂在下，201×7（717）陰離子交換樹(shù)脂在上。</span></div><div><span style="font-size: 16px;"><br /></span></div><div><span style="font-size: 16px;"> <strong>混床陰陽(yáng)離子交換樹(shù)脂</strong>沖洗：</span></div><div><span style="font-size: 16px;"><br /></span></div><div><span style="font-size: 16px;"> 樹(shù)脂裝入交換器后，用潔凈水反洗樹(shù)脂層，直至出水清晰、無(wú)氣味、無(wú)細(xì)碎樹(shù)脂為止。</span></div><div><span style="font-size: 16px;"><br /></span></div><div><span style="font-size: 16px;"> 用約2倍樹(shù)脂體積的4-5%HCl溶液，以2m/h的流速通過(guò)樹(shù)脂層。全部通入后，浸泡4-8小時(shí)，排去酸液，用潔凈水沖洗至出水呈中性，沖洗流速為10-20m/h。</span></div><div><span style="font-size: 16px;"><br /></span></div><div><span style="font-size: 16px;"> 用約2倍樹(shù)脂體積的2-5%NaOH溶液，按上面進(jìn)HCl溶液的方法通入和浸泡。排去堿液，用潔凈水沖洗至出水呈中性，沖洗流速同上。酸、堿溶液若能重復(fù)進(jìn)行2-3次，則效果更佳。</span></div><div><span style="font-size: 16px;"><br /></span></div><div><span style="font-size: 16px;"> 混床陰陽(yáng)離子交換樹(shù)脂混合：</span></div><div><span style="font-size: 16px;"><br /></span></div><div><span style="font-size: 16px;"> 1、沖洗結(jié)束后，打開(kāi)下進(jìn)、上排閥，啟動(dòng)中間水泵（反沖洗使樹(shù)脂層松動(dòng)），將柱內(nèi)積水排至樹(shù)脂層面上100-150mm處時(shí)，關(guān)中間水泵和進(jìn)水閥；</span></div><div><span style="font-size: 16px;"><br /></span></div><div><span style="font-size: 16px;"> 2、打開(kāi)小量排空閥，開(kāi)啟并控制進(jìn)氣閥門的進(jìn)氣量（進(jìn)氣壓力為0.1-0.15Mpa），觀察上下窺視鏡內(nèi)樹(shù)脂有節(jié)律的上下沸騰混合，使上下樹(shù)脂顏色深淺混合一致。進(jìn)氣時(shí)間一般為10-15分鐘；</span></div><div><span style="font-size: 16px;"><br /></span></div><div><span style="font-size: 16px;"> 3、混合結(jié)束后，關(guān)閉進(jìn)氣閥、排空閥，再迅速開(kāi)啟上進(jìn)閥、中間水泵、下排閥（使樹(shù)脂迅速沉降，防止樹(shù)脂在沉降過(guò)程中重新分層）。同時(shí)也要防止樹(shù)脂露出水面，否則樹(shù)脂間會(huì)產(chǎn)生氣泡，從而影響混床的出水水質(zhì)（若混合效果不佳時(shí)，可以重復(fù)混合操作）。</span></div><div><span style="font-size: 16px;"><br /></span></div><div><span style="font-size: 16px;"> 注意事項(xiàng)：</span></div><div><span style="font-size: 16px;"><br /></span></div><div><span style="font-size: 16px;"> 運(yùn)行一年以上，須檢查樹(shù)脂實(shí)際裝填高度，如樹(shù)脂層高不夠了，就需要相應(yīng)填補(bǔ)樹(shù)脂。</span></div><div><span style="font-size: 16px;"><br /></span></div><div><span style="font-size: 16px;"> 混床出水指標(biāo)主要有兩項(xiàng)，一項(xiàng)是電導(dǎo)率＜0.2us/cm，另一項(xiàng)是硅含量Csio2＜0.02mg/L，為合格。</span></div><div><span style="font-size: 16px;"><br /></span></div><div><span style="font-size: 16px;"> 如果混床周期制水量明顯下降，出水指標(biāo)不穩(wěn)定，再生酸堿耗、水耗居高不下，那就要對(duì)樹(shù)脂是否被污染及樹(shù)脂強(qiáng)度等指標(biāo)進(jìn)行再生或檢測(cè)。</span></div> <div class="g8ya0o0ccgi" id="news_sx"><li id="g8ya0o0ccgi" class="sx_left">上一篇：<a 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