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</div> </li> </ul> </div> </div> </div> <div id="t5pz0r5" class="body-right"> <div class="agpryi5" id="md_content" class="mt15"> <div id="5qoyd0n" class="breadCrumb ThemeFborder"> <b>您當前的位置：</b><a href="/">首頁(yè)</a><em>></em> <a href="/Article-index.html" class="Themefont">新聞中心</a><em>></em><a href="/Articles-208370.html" class="Themefont">新聞中心</a> </div>  <div id="p03cqdu" class="row"> <div id="5085n80" class="news-nr-box"> <style> body .news-nr-box h1{ font-size:18px; font-family:Airal; text-align:center; line-height:25px; padding: 10px 0; margin:0px; color:#333; } </style> <div id="b58birt" class="news1-title"> <h1>反滲透膜堵塞的原因</h1> <h6> <span>2022-08-16</span> <span>　來(lái)自:  威海君創(chuàng )環(huán)?？萍加邢薰? </span> <span style="margin-left:10px;">瀏覽次數:424</span> </h6> </div> <p>反滲透設備在使用過(guò)程中，由于操作不當或清洗不當，不可避免地會(huì )造成反滲透膜堵塞。我們要找出堵塞的原因，并總結出相應的解決辦法，來(lái)解決反滲透膜堵塞的原因。<br/></p><p><br style="text-align: left;"/></p><p><br/></p><p>一、反滲透膜堵塞的原因及解決方法</p><p><br style="text-align: left;"/></p><p>1.與原水水質(zhì)和流量相比，系統沒(méi)有配備預處理裝置，或者系統中沒(méi)有配備必要的工藝裝置和工藝。</p><p><br style="text-align: left;"/></p><p>2.預處理裝置運行異常，即系統原預處理裝置處理的原水SDI組成、濁度和除膠能力較低，忽略了預處理效果。</p><p><br/></p><p><br style="text-align: left;"/></p><p>3.系統選擇了不正確的設備或設備材料(泵)、管道等。</p><p><br style="text-align: left;"/></p><p>4.系統化學(xué)劑注入裝置故障(酸液(酸液)、絮凝/助凝劑、阻垢劑/分散劑、還原劑等。</p><p><br style="text-align: left;"/></p><p>5.設備間歇運行或系統停止使用后，沒(méi)有采取適當的保護措施。</p><p><br style="text-align: left;"/></p><p>6.運行管理人員不合理的設備操作和應用回收率、產(chǎn)水量、濃縮水量、壓差、清洗等。</p><p><br style="text-align: left;"/></p><p>7.膜系統中長(cháng)期不溶性沉積物的積累。</p><p><br style="text-align: left;"/></p><p>8.原水成分發(fā)生重大變化或水源特性發(fā)生根本變化。</p><p><br style="text-align: left;"/></p><p>9.反滲透膜系統中出現了相當程度的微生物污染。</p><p><br style="text-align: left;"/></p><p>二。不同污染物的分類(lèi)</p><p><br style="text-align: left;"/></p><p>1.碳酸鹽垢</p><p><br style="text-align: left;"/></p><p>結垢后，標準滲透液的流速降低，或脫鹽率降低。</p><p><br style="text-align: left;"/></p><p>原因:薄膜表面的濃差極化增加。</p><p><br style="text-align: left;"/></p><p>2.鐵/錳:污染后的表現:標準壓差增大(主要在裝置前端)，也可能導致透水性降低。錳和鐵通常同時(shí)存在。</p><p><br style="text-align: left;"/></p><p>3.硫酸鹽垢:沉積時(shí)，鹽濃度最高的系統末端膜元件顯示兩級壓差明顯增大。需要特殊的清潔劑。</p><p><br style="text-align: left;"/></p><p>2.硅:顆粒硅:污染膜元件的水流通道，導致系統壓差增大。使用0。0.4%二氯胺能有效溶解嚴重污染的氧化硅垢。</p><p><br style="text-align: left;"/></p><p>硅膠:類(lèi)似顆粒硅。</p><p><br style="text-align: left;"/></p><p>溶解硅:形成硅酸鹽沉淀，用二氯胺清洗。</p><p><br style="text-align: left;"/></p><p>3.懸浮物/有機物。</p><p><br style="text-align: left;"/></p><p>污水封堵性能:水滲透率下降，段壓差明顯增大。如果有水供應。如果SDI大于4或濁度大于1，有機污染的可能性較大。</p><p><br style="text-align: left;"/></p><p>4.微生物</p><p><br style="text-align: left;"/></p><p>堵塞性能:標準壓差增大或標準水滲透率降低?？墒褂梅茄趸詺⒕鷦┖蛪A進(jìn)行清洗。</p><p><br style="text-align: left;"/></p><p>5.鐵細菌</p><p><br style="text-align: left;"/></p><p>阻塞性能:標準壓差增加?？捎?。用EDTA鈉鹽和堿清洗。</p><p><br style="text-align: left;"/></p><p>三、發(fā)生下列情況時(shí)，應清洗膜</p><p><br style="text-align: left;"/></p><p>1.標準化設備產(chǎn)水量降低10 ~ 15%；</p><p><br style="text-align: left;"/></p><p>2.標準化膜系統的操作壓力增加15%；</p><p><br style="text-align: left;"/></p><p>3.標準化膜系統的鹽滲透性比初始正常值增加了10 ~ 15%；</p><p><br style="text-align: left;"/></p><p>4.與初始操作相比，操作壓差增加了15%。</p><p><br style="text-align: left;"/></p><p>四。反滲透膜的清洗方法</p><p><br style="text-align: left;"/></p><p>1.負壓清洗:負壓清洗可以說(shuō)是利用設備的真空吸力在反滲透膜側形成的壓力，可以有效地去除膜的表面和內部。</p><p><br style="text-align: left;"/></p><p>污染物；</p><p><br style="text-align: left;"/></p><p>2.反洗:反洗是用強烈的氣體或液體清洗膜表面，從而清洗膜內的污染物，恢復膜的清潔度。目前，后坐力是</p><p><br style="text-align: left;"/></p><p>清洗反滲透膜的常用方法之一；</p><p><br style="text-align: left;"/></p><p>3.化學(xué)清洗:化學(xué)清洗的方法是用化學(xué)清洗劑清洗反滲透膜。因為化學(xué)物質(zhì)的靶向清洗也能有效進(jìn)入膜內。</p><p><br style="text-align: left;"/></p><p>線(xiàn)清洗，這種方法也是常用的清洗方法之一。</p><p alt_type="反滲透膜堵塞的原因-威海君創(chuàng )環(huán)?？萍加邢薰?><br/></p><p class="altType" alt_type="反滲透膜堵塞的原因-威海君創(chuàng )環(huán)?？萍加邢薰? style="display: none;"></p> </div> <div id="qepldx5" class="pager ks-clear"> <span id="0zqrug0" class="iconfont1 iconjiantou 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