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src="http://img69.chem17.com/gxhpic_7a6f8c9d06/edbdb22ff9de4a323c748745dc4827a9d331d6b555a96b62e96e742ffaa8a40b8d977ae6a8403e13.jpg" jqimg="http://img69.chem17.com/gxhpic_7a6f8c9d06/edbdb22ff9de4a323c748745dc4827a9d331d6b555a96b62e96e742ffaa8a40b8d977ae6a8403e13.jpg"></a></div></div> <div id="mjssoriesdx" class="rltproy"> <p class="proname">陰陽混床樹脂拋光樹脂</p> <ul> <li>更新時間： 2024-06-16</li> <li>產(chǎn)品型號： <span></span></li> <li id="mjssoriesdx" class="proname2">簡單描述</li> <li>陰陽混床樹脂拋光樹脂</br>進(jìn)氣時間一般為10-15分鐘；3、混合結(jié)束后，關(guān)閉進(jìn)氣閥、排空閥，再迅速開啟上進(jìn)閥、中間水泵、下排閥（使樹脂迅速沉降，防止樹脂在沉降過程中重新分層）。同時也要防止樹脂露出水面，否則樹脂間會產(chǎn)生氣泡，從而影響混床的出水水質(zhì)（若混合效果不佳時，可以重復(fù)混合操作）。</li> </ul> </div> <div id="mjssoriesdx" class="proneirong"> <div id="mjssoriesdx" class="proneirongp"><span>詳細(xì)介紹</span></div> <p><strong>陰陽混床樹脂拋光樹脂</strong><br />新樹脂的預(yù)處理：新樹脂常含有溶劑、未參加聚合反應(yīng)的物質(zhì)和少量低聚合物，還可能吸著鐵、鋁、銅等重金屬離子。當(dāng)樹脂與水、酸、堿或其他溶液相接觸時，上述可溶性雜質(zhì)就會轉(zhuǎn)入溶液中，在使用初期污染出水水質(zhì)。所以，新樹脂在投運(yùn)前要進(jìn)行預(yù)處理。<br /><img src="https://img69.chem17.com/gxhpic_7a6f8c9d06/edbdb22ff9de4a323c748745dc4827a9d331d6b555a96b62e96e742ffaa8a40b8d977ae6a8403e13.jpg" /><br /><img src="https://img69.chem17.com/gxhpic_7a6f8c9d06/edbdb22ff9de4a323c748745dc4827a95136547d5dcae78b903364398b2bae2055c0bdc341b4209d.jpg" /><br /><br /><strong>陰陽混床樹脂拋光樹脂</strong> 離子交換樹脂有那些吸附選擇性？　　離子交換樹脂對溶液中的不同離子有不同的親和力，對它們的吸附有選擇性。各種離子受樹脂交換吸附作用的強(qiáng)弱程度有一般的規(guī)律，但不同的樹脂可能略有差異。主要規(guī)律如下：<br />　　(1) 對陽離子的吸附<br />　　高價離子通常被優(yōu)先吸附，而低價離子的吸附較弱。在同價的同類離子中，直徑較大的離子的被吸附較強(qiáng)。一些陽離子被吸附的順序如下：<br />　　Fe3+ > Al3+ > Pb2+ > Ca2+ > Mg2+ > K+ > Na+ > H+<br />　　(2) 對陰離子的吸附<br />　　強(qiáng)堿性陰離子樹脂對無機(jī)酸根的吸附的一般順序為：<br />　　SO42-> NO3- > Cl- > HCO3- > OH-<br />　　弱堿性陰離子樹脂對陰離子的吸附的一般順序如下：<br />　　OH-> 檸檬酸根3- > SO42- > 酒石酸根2- >草酸根2- > PO43- >NO2- > Cl- >醋酸根- > HCO3-<br />　　(3) 對有色物的吸附<br />　　糖液脫色常使用強(qiáng)堿性陰離子樹脂，它對擬黑色素(還原糖與氨基酸反應(yīng)產(chǎn)物)和還原糖的堿性分解產(chǎn)物的吸附較強(qiáng)，而對焦糖色素的吸附較弱。這被認(rèn)為是由于前兩者通常帶負(fù)電，而焦糖的電荷很弱。<br />　　通常，交聯(lián)度高的樹脂對離子的選擇性較強(qiáng)，大孔結(jié)構(gòu)樹脂的選擇性小于凝膠型樹脂與強(qiáng)堿型軟化樹脂。這種選擇性在稀溶液中較大，在濃溶液中較小。<br />津達(dá)離子交換樹脂的物理性質(zhì)有哪些影響？上一篇：津達(dá)離子交換樹脂的離子交換容量有幾種表示方式？<br /><br /><br />各類離子交換樹脂的再生方法<br />再生劑的種類應(yīng)根據(jù)樹脂的離子類型來選用，并適當(dāng)?shù)剡x擇價格較低的酸、堿或鹽。<br />1、大孔吸附樹脂簡單再生的方法是用不同濃度的溶劑按極性從大到小剃度洗脫，再用2~3BV的稀酸、稀堿溶液浸泡洗脫，水洗至PH值中性即可使用。<br />2、鈉型強(qiáng)酸性陽樹脂可用10%NaCl 溶液再生，用藥量為其交換容量的2倍 (用NaCl量為117g/ l 樹脂)；氫型強(qiáng)酸性樹脂用強(qiáng)酸再生，用硫酸時要防止被樹脂吸附的鈣與硫酸反應(yīng)生成硫酸鈣沉淀物。為此，宜先通入1～2%的稀硫酸再生。<br />3、氯型強(qiáng)堿性樹脂，主要以NaCl 溶液來再生，但加入少量堿有助于將樹脂吸附的色素和有機(jī)物溶解洗出，故通常使用含10%NaCl + 0.2%NaOH 的堿鹽液再生，常規(guī)用量為每升樹脂用150～200g NaCl ，及3～4g NaOH。OH型強(qiáng)堿陰樹脂則用4%NaOH溶液再生。<br />4、一些脫色樹脂 (特別是弱堿性樹脂) 宜在微酸性下工作。此時可通入稀鹽酸，使樹脂 pH值下降至6左右，再用水正洗，反洗各一次。<br /> </p><br /> <link rel="stylesheet" type="text/css" href="/css/MessageBoard_style.css"> <script language="javascript" src="/skins/Scripts/order.js?v=20210318" type="text/javascript"></script> <a name="order" id="order"></a> <div id="mjssoriesdx" class="ly_msg" 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