熱電廠化水處理中混床的再生操作方法-深圳市慧聰源環(huán)?？萍加邢薰?/title> <link rel="stylesheet" type="text/css" href="/skins/270528/css/style.css"> <script src="/skins/270528/js/jquery-3.6.0.min.js"></script> <link rel="shortcut icon" href="/skins/270528/favicon.ico">  <script type="text/javascript"> document.addEventListener("touchstart", function () { }, true); </script>  <script language="javascript" type="text/javascript"> var nav= '5'; </script>  <script type="application/ld+json"> { "@context": "https://ziyuan.baidu.com/contexts/cambrian.jsonld", "@id": "http:///szhcy-Article-757530/", "title": "熱電廠化水處理中混床的再生操作方法", "pubDate": "2015-03-11T19:34:14", "upDate": "2015-03-11T19:34:14" }</script> <script language="javaScript" src="/js/JSChat.js"></script><script language="javaScript">function ChatBoxClickGXH() { DoChatBoxClickGXH('https://chat.chem17.com',262687) }</script><script> (function(){ var bp = document.createElement('script'); var curProtocol = window.location.protocol.split(':')[0]; if (curProtocol 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id="tq6ztn8r" class="clear"></div> </form> </div> <div id="tq6ztn8r" class="clear"></div> </div> </div>   <div id="tq6ztn8r" class="ly_crumb"> <img src="/skins/270528/images/crumb_icon.png" /><p>當(dāng)前位置：<a href="/">首頁</a> > <a href="/article.html">技術(shù)文章</a> > <span>熱電廠化水處理中混床的再生操作方法</span></p> </div>   <div id="tq6ztn8r" class="ly_NyNewsdetail"> <h1 class="NyNewsdetail_title">熱電廠化水處理中混床的再生操作方法</h1> <div id="tq6ztn8r" class="NyNewsdetail_tips">更新時(shí)間：2015-03-11 點(diǎn)擊次數(shù)：3329</div> <div id="tq6ztn8r" class="NyNewsdetail_con"> <p><span style="font-size:10px;"><span style="color:#000000;"><span style="font-family:宋體">1、反洗分層。</span><br><span style="font-family:宋體"> 水力反洗，開始時(shí)流速宜小，待樹脂層松動(dòng)后逐漸加大流速至10m/h，使整個(gè)樹脂層的膨脹率在50％左右后，讓樹脂沉降下來，陽離子樹脂密度大，沉于下面，陰樹脂密度小，浮于上面。反洗時(shí)間一般15－20min，反洗時(shí)注意不要跑樹脂。反洗結(jié)束后，關(guān)閉反洗水入口閥，排水閥。</span><br><span style="font-family:宋體">可能會(huì)出現(xiàn)的問題：分層不明顯。</span><br><span style="font-family:宋體">采取方法：加NaOH.反洗完畢后，待樹脂落實(shí)下來；保持樹脂層上部有200mm－300mm厚的水層。開啟堿抽子向混床內(nèi)注入少量（如200L）的堿，注堿濃度為1.5％－2.0％。注堿完畢后，關(guān)閉正洗排水閥，靜置10min,以使泡堿反應(yīng)時(shí)間較為充分，靜置完畢，開始反洗分層。</span><br><span style="font-family:宋體">注堿作用：1）消除陰陽樹脂間靜電引力，解決“抱團(tuán)".2)使陰樹脂盡可能地轉(zhuǎn)變?yōu)镺H型；使陽離子轉(zhuǎn)變?yōu)镹a型，增加密度差，強(qiáng)化分層。</span><br><span style="font-family:宋體">2、再生</span><br><span style="font-family:宋體">1）陽樹脂再生。</span><br><span style="font-family:宋體">開啟酸抽子入口水閥，調(diào)整進(jìn)水流速5m/h，開啟堿抽子入口水閥維持頂壓水，流速約5m/h（頂壓水的作用是防止酸液上流，污染陰離子樹脂），用中間排水閥調(diào)整樹脂上部水位200－300mm。開啟進(jìn)酸閥，調(diào)整再生酸濃度2－3％，注酸再生。</span><br><span style="font-family:宋體">2）陰離子樹脂再生。</span><br><span style="font-family:宋體">待酸打完后，關(guān)閉酸濃度調(diào)整閥。此時(shí)酸抽子不停，繼續(xù)用除鹽水沖洗陽離子樹脂。開啟進(jìn)堿閥，調(diào)節(jié)堿再生濃度1.0－1.5％。混床的再生劑量，一般陽離子樹脂采用理論量的2倍；陰離子樹脂采用理論量的3倍，采用體外再生時(shí)，比耗稍低。</span><br><span style="font-family:宋體">3）對(duì)流沖洗。</span><br><span style="font-family:宋體">待注堿完畢后，繼續(xù)用除鹽水從上下兩個(gè)部分進(jìn)入混床，對(duì)混床樹脂進(jìn)行沖洗。</span><br><span style="font-family:宋體">沖洗終點(diǎn)：從中間排水取樣化驗(yàn)，硬度為0umol/L, HSiO3離子小于50mg/L時(shí)，停止對(duì)流沖洗，關(guān)閉有關(guān)閥門。</span><br><span style="font-family:宋體">3、混脂。</span><br><span style="font-family:宋體">混脂時(shí)壓縮風(fēng)力為0.1－0.15MP，混脂時(shí)間為3－5分鐘，基本混勻后，快開正洗排水閥，快關(guān)進(jìn)氣閥，目的是使樹脂快速沉降，均勻混合。</span><br><span style="font-family:宋體">4、正洗。</span><br><span style="font-family:宋體">混合后的樹脂層以10－15m/h的流速通水進(jìn)行正洗。正洗終點(diǎn)以正洗排水中HSiO3離子小于20ug/L，電導(dǎo)率低于0.2us/cm為好。</span><br><span style="font-family:宋體">補(bǔ)充：</span><br><span style="font-family:宋體">1）在化水處理中，混床的一般運(yùn)行流速為40－60m/h</span><br><span style="font-family:宋體">2)根據(jù)水質(zhì)標(biāo)準(zhǔn)，當(dāng)混床出水電導(dǎo)率大于0.2us/cm時(shí)，或其出水HSiO3離子大于20ug/L時(shí)，停止運(yùn)行</span><br><span style="font-family:宋體">3）混床樹脂的裝填高度一般為：強(qiáng)酸陽樹脂0.6m高，強(qiáng)堿陰樹脂1.2m高</span><br><span style="font-family:宋體">4）混床樹脂陽：陰體積比 1：2 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