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id="s00iu8m" class="gs_tit"><h3>產(chǎn)品概述</h3></div> <div id="0wq0umi" class="gs_text"> <p><span style="color:#000000"><span style="font-size:14px"><span style="font-family:宋體"><strong>絮凝沉淀聚丙烯酰胺</strong>在污泥脫水工藝：</span></span></span></p><p><span style="color:#000000"><span style="font-size:14px"><span style="font-family:宋體">在污水處理中，聚丙烯酰胺的兩個主要作用是絮凝和污泥脫水，聚丙烯酰胺可分為陰離子、陽離子、兩性離子和非離子幾種類型，不同型號的聚丙烯酰胺在應(yīng)用上也有很大的區(qū)別。</span></span></span></p><p><span style="color:#000000"><span style="font-size:14px"><span style="font-family:宋體">在污泥脫水中選用合適的絮凝劑非常重要，聚丙烯酰胺絮凝劑選擇要以效率高、用量少為原則。一般來說，有機污泥適宜添加陽離子絮凝劑，而無機污泥應(yīng)加入陰離子絮凝劑。市政污泥主要以有機污泥為主，并帶有一定量的負(fù)電荷，因此選用陽離子絮凝劑。理論上，聚丙烯酰胺絮凝劑的分子量越大，聚丙烯酰胺絮凝效率越高，而在實際運用中陽離子絮凝劑的電荷質(zhì)決定污泥選型的正確性，離子度越高價格越貴。在實際的應(yīng)用中，絮凝劑分子量一般選用 1000 萬左右即可。</span></span></span></p><p><span style="color:#000000"><span style="font-size:14px"><span style="font-family:宋體">聚丙烯酰胺的濃度與使用量的關(guān)系：當(dāng)聚丙烯酰胺濃度為0.2%、溫度為25~30度時，對于機車廠的機械加式污泥，適宜聚丙烯酰胺為離子度55%~60%，分子量1500萬的陽離子有機高分子聚丙烯酰胺，投加量為100g/m3,脫水率為69%~74%、49%~50%;對于城市污水處理廠的生活污泥，適宜絮凝劑為分子量300~600萬的陽離子型有機高分子聚丙烯酰胺，投加量為100g/m3,脫水率為79%;而適用于橡膠加工污泥的絮凝劑是各種陽離子絮凝劑，脫水率為55%~63%，陰離子類絮凝劑的效果也較好，但用量比較多。</span></span></span></p><p><span style="color:#000000"><span style="font-size:14px"><span style="font-family:宋體">適宜的聚丙烯酰胺絮凝劑用量是絮凝劑全部被吸附在固相粒子表面上，且絮團(tuán)的沉降速度達(dá)到大值。但要找出適宜的絮凝劑用量非常困難，要想獲得藥劑使用值要經(jīng)過專業(yè)的污水處理技術(shù)人員進(jìn)行準(zhǔn)確的藥劑選型，結(jié)合實際應(yīng)用及借鑒以往實踐案例，一般造紙廠、印染廠用弱陽離子絮凝劑即可，而生活污水處理廠一般選中強陽離子聚丙烯酰胺，像制藥廠、皮革廠要用到強陽離子聚丙烯酰胺才可以處理。</span></span></span></p><p><span style="color:#000000"><span style="font-size:14px"><span style="font-family:宋體"><strong>絮凝沉淀聚丙烯酰胺</strong></span></span></span></p><p><span style="color:#000000"><span style="font-size:14px"><span style="font-family:宋體">聚丙烯酰胺是一種凈化污水的主要產(chǎn)品，然而，在眾多污水處理實驗中了解，聚丙烯酰胺不僅具備污水凈化的能力，同時還可運用在土地中，為土地帶來很多好處。</span></span></span></p><p><span style="color:#000000"><span style="font-size:14px"><span style="font-family:宋體">1、聚丙烯酰胺（聚丙烯酰胺）在防止水土流失的過程中增加了土壤保水性和保肥性，改良了土壤，改善了土壤的通透性和抗旱能力，給作物的增產(chǎn)提供了條件。施用后，可以提高作物出苗率。能有效的減少徑流損失，特別是減少了吸附在土壤上的殺蟲劑的損失和地表磷元素流入河流和湖泊的損失。從環(huán)境的角度來看，有利于改善河水質(zhì)量。</span></span></span></p><p><span style="color:#000000"><span style="font-size:14px"><span style="font-family:宋體">2、施加聚丙烯酰胺（聚丙烯酰胺）以后，增加了徑流的剝蝕難度。在水的潤濕下，聚丙烯酰胺開始反應(yīng)，由顆粒狀變成多枝纖維狀，將顆粒緊緊纏繞保持土壤表層結(jié)構(gòu)穩(wěn)定，可大大減少土壤表面結(jié)皮的形成，降低雨滴濺擊力和減少地表徑流對表層土壤的破壞程度，而土壤沉降系數(shù)、結(jié)構(gòu)系數(shù)、土壤大粒級含量和各級水穩(wěn)性團(tuán)粒的增加提高了土壤的持水性和滲透系數(shù)，從而達(dá)到減少地表徑流，減少地表沖刷侵蝕的作用，使土壤肥力得以保持。</span></span></span></p> </div> </div> </div> <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="0scemse" class="ly_msg" id="ly_msg"> <form method="post" name="form2" id="form2"> <h3>留言框 </h3> <ul> <li> <h4 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