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class="mcon"> <div class="dqwz"><b>當前位置：</b><a href="http://www.nahini.com/">首頁</a>><a href="http://www.nahini.com/xinwen/">公司新聞</a>> 正文</div> <h1>如何選擇分子量合適的絮凝劑？</h1> <div class="info" id="artinfo">發布時間：<span>2022-07-01</span> </div> <p> <span style="font-family: "Helvetica Neue", Helvetica, "PingFang SC", "Microsoft YaHei", Tahoma, Arial, sans-serif; font-size: 14px;"><p> </p><p>如何選擇分子量合適的絮凝劑？絮凝劑也叫聚丙烯酰胺，分子量是指分子中分子鏈的長度。聚丙烯酰胺的分子量在500萬到1800萬之間。一般來說，分子量越高，聚丙烯酰胺產品的粘度越高。但在使用時，并不是分子量較高的產品，所以使用效果會更好。具體來說，在使用中，聚丙烯酰胺的合適分子量應根據實際應用行業、水質、處理設備等條件來確定。</p><p style="text-align:center"></p><p>聚丙烯酰胺也是一種高分子助凝劑。根據其平均分子量，產品可分為三類：低分子量(</p><p>其中分子量超過1600萬的聚丙烯酰胺是應用廣泛的一種。不同的聚合物聚丙烯酰胺有不同的水處理效果。高聚合度水性有機高分子聚合物或共聚物的分子含有許多能與膠體顆粒和微細懸浮顆粒表面某些點相互作用的活性基團，分子量在幾十萬到幾百萬之間。根據聚合物單體上活性基團在水中的解離情況，按官能團可分為三類：非離子型、陰離子型和陽離子型。</p><p>陽離子聚丙烯酰胺常用于污泥脫水，適用于污水處理中帶負電荷污水的絮凝沉淀。</p><p>陰離子聚丙烯酰胺用于處理懸浮顆粒粗、濃度高、帶正電荷、PH值中性或堿性的污水、鋼鐵廠廢水、電鍍廠廢水、冶金廢水、洗煤廢水等。</p><p>與陰離子型PAM絮凝劑相比，非離子型聚丙烯酰胺由于不含離子官能團，所以具有以下特點：絮凝性能受水PH值和鹽類波動的影響較小。水質呈酸性時優于陰離子型絮凝劑，絮體強度強于陰離子型PAM高分子絮凝劑。</p><p>污水處理用聚丙烯酰胺的分子量選擇：</p><p>用于工業污水處理的PAM分子量在1200萬到2000萬之間。</p><p>用于洗煤廢水處理的聚丙烯酰胺分子量通常在1200萬~ 1800萬之間，每噸洗煤水中加入2 ~ 6g的聚丙烯酰胺即可起到凈化作用。</p><p>用于污泥脫水的PAM分子量在800萬-1200萬之間，可以根據污泥脫水機的類型通過燒杯實驗來確定。</p><p> </p></span></p> <div class="prenext"> <div class="yunu-infocontent-return"> 本文標簽：</div> <span class="pre"><b>上一篇：</b><a href='http://www.nahini.com/xinwen/1000.html'>陰/陽/非離子聚丙烯酰胺的PH值與使用范圍</a></span> <span class="next"><b>下一篇：</b><a href='http://www.nahini.com/xinwen/1004.html'>制砂污水處理黃藥和白藥起什么作用？</a></span> <div class="clearfix"></div> </div> <div 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