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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/wenda/">常見問題</a>> 正文</div> <h1>聚丙烯酰胺的用量是多少，改怎么添加？</h1> <div class="info" id="artinfo">發布時間：<span>2021-04-03</span> </div> <p> <span style="font-family: "Helvetica Neue", Helvetica, "PingFang SC", "Microsoft YaHei", Tahoma, Arial, sans-serif; font-size: 14px;"><p>　　聚丙烯酰胺的用量是基于絮凝效果會隨著聚丙烯酰胺用量的增加而增加，但如果過量，絮凝劑又會變成穩定的膠體。首先，非常重要的一點是聚丙烯酰胺的用量對絮凝效果的影響。(作為化學藥劑，影響聚丙烯酰胺使用效果的因素很多，同時藥劑的配置和使用也有很多環境因素，但主要影響因素有：聚丙烯酰胺的用量、聚丙烯酰胺的性質和結構、聚丙烯酰胺的攪拌速度和時間、PH值、溫度等因素。(</p><p>　　一般情況下，絮凝效果會隨著絮凝劑用量的增加而增加，但過量時絮凝劑又會變成穩定的膠體；根據懸浮物的含量，通過具體實驗得出最佳用量。</p><p>　　分離方法和工藝設計對絮凝效果的影響無機絮凝劑和有機高分子絮凝劑PAC PAM的復合使用：一般在原水處理去除固體顆粒和含油廢水處理去除油的過程中，高分子有機聚丙烯酰胺的效果更好，用量一般較小，但如果與無機絮凝劑結合，效果更好。有機絮凝劑和無機絮凝劑的組合的特征在于獲得最大顆粒的絮凝物并凝聚或吸附油滴。另一個是化學物質本身，以及聚丙烯酰胺的性質和結構對絮凝的影響。線型有機高分子絮凝劑絮凝效果較好；環狀或分支結構效果差；有機高分子絮凝劑的官能團在極性、親水性、電荷性質、電荷中和能力、對膠體粒子的吸附和反應等方面有所不同。如果官能團多，電荷密度會太高；官能團少，電荷密度低，不利于電荷中和。</p><p>　　有機高分子絮凝劑分子量對絮凝效果的影響：一般分子量越高，絮凝效果越好。絮凝劑的分子量一般不能小于2000萬。但不宜過高，否則不利于膠粒的架橋。在試驗中，還有一個不可忽視的因素，就是聚丙烯酰胺效應也受外界影響：攪拌速度和時間：太快，時間太長：固體的大顆粒會被粉碎成小顆粒，能沉淀的顆粒會被粉碎成不能沉淀的顆粒。速度太慢，時間太短：絮凝劑不能與固體顆粒充分接觸，不利于絮凝劑收集膠體顆粒；而且絮凝劑的濃度分布不均勻，不利于絮凝劑的作用發揮。酸堿度：酸堿度對膠體顆粒的表面電荷電位、絮凝劑的性質和功能等有很大影響。溫度高、水溫高時，反應速度過快，形成的絮體??；水溫低時，反應速度太慢，水解時間增加，影響處理水量。同時，高粘度對絮凝劑的撕裂作用會使絮體變細。陰離子聚丙烯酰胺</p><p><br/></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/wenda/279.html'>聚丙烯酰胺的保質期是多長時間？</a></span> <span class="next"><b>下一篇：</b><a href='http://www.nahini.com/wenda/433.html'>[聚丙烯酰胺]你應該知道一些</a></span> <div class="clearfix"></div> </div> <div class="clearfix"></div> <div class="row nynew"> 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