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href='/cpzs/'>產品展示</a> > </span> </div> <div class="mainContect"> <div class="title"> 廢水氨氮去除常見方法：原理和特點分析，使用要求有何不同？ <span> 作者：南京億之源來源：<a href="/">除磷劑</a>廠發布時間：2020-07-23 12:04:01 </span> </div> <div class="con"> <div class="pb"> <div class="pagebox"> <div> <span style="font-size:14px;">　　廢水氨氮在進入水體之后，不光會導致水體富營養化，從而開始發黑變丑，還會對周邊的人群和生態造成毒害的作用，且增加對廢水處理的難度和成本，隨著這些年環保的呼聲越來越高，廢水氨氮處理的技術和行業發展也是邁入了成熟化的步伐，那么當前各大廢水氨氮處理方法中，都有哪些使用要求呢？比較常見的處理方法有哪些？原理和特點有何區別？下面我們一起來看下，看完你就知道啦。</span></div> <div style="text-align: center;"> <br /> <span style="font-size:14px;"><img alt="" src="/uploads/allimg/200723/1-200H3120332414.jpg" style="width: 605px; height: 375px;" /></span></div> <h3> 　　一、廢水氨氮去除方法的使用要求</h3> <div> </div> <div> <strong><span style="font-size:14px;">　　1、生物法</span></strong></div> <div> </div> <div> <span style="font-size:14px;">　　目前，生物法是比較傳統、成熟的廢水中氨氮的去除方法，能在一定程度上去除污水中的氨氮。傳統生物脫氮途徑，一般包括硝化和反硝化兩個階段。這兩個階段的反應，分別由硝化菌和反硝化菌作用完成。由于對環境條件的要求不同，這兩個過程不能同時發生，而只能序列式進行。即硝化反應發生，在好氧條件下，反硝化反應發生在缺氧或厭氧條件下。</span></div> <div> </div> <div> <strong><span style="font-size:14px;">　　使用要求：</span></strong></div> <div> </div> <div> <span style="font-size:14px;">　?。?）pH:控制在8左右；</span></div> <div> </div> <div> <span style="font-size:14px;">　?。?）溫度：維持在20℃~40℃；</span></div> <div> </div> <div> <span style="font-size:14px;">　?。?）溶解氧：硝化階段保持在2~3mg/L,反硝化階段保持在1mg/L以下。</span></div> <div> </div> <div> <strong><span style="font-size:14px;">　　2、空氣吹脫法</span></strong></div> <div> </div> <div> <span style="font-size:14px;">　　讓廢水與空氣充分接觸，則水中揮發性的氨氣將由液相向氣相轉移，達到廢水中氨氮的去除效果。吹脫塔內裝填木質或塑料板條填料，空氣流由塔的下部進入，而廢水則由塔頂落至塔底集水池。</span></div> <div> </div> <div> <strong><span style="font-size:14px;">　　使用要求：</span></strong></div> <div> </div> <div> <span style="font-size:14px;">　?。?）pH:控制在10.8~11.5;</span></div> <div> </div> <div> <span style="font-size:14px;">　?。?）溫度：水溫降低時氨的溶解度增加，吹脫效率降低；</span></div> <div> </div> <div> <span style="font-size:14px;">　?。?）氣/水比：可取2500~5000（m3/m2）</span></div> <div> </div> <div> <span style="font-size:14px;">　?。?）水力負荷：2.5~5m3/m2?h</span></div> <div> </div> <div> <strong><span style="font-size:14px;">　　3、化學法</span></strong></div> <div> </div> <div> <span style="font-size:14px;">　　該廢水中氨氮的去除方法也因使用簡單、去除率高、時間短而受到眾多環保人的歡迎。在污水中直接投加一種可以去除廢水中氨氮的藥劑--氨氮去除劑。該方法可以在5分鐘左右，氨氮去除率96%以上，達到深度脫氮的效果。</span></div> <div> </div> <div> <strong><span style="font-size:14px;">　　使用要求：</span></strong></div> <div> </div> <div> <span style="font-size:14px;">　?。?）pH:可以在很寬的范圍使用；</span></div> <div> </div> <div> <span style="font-size:14px;">　?。?）溫度：即便很低的溫度都可以使用；</span></div> <div> </div> <div> <span style="font-size:14px;">　?。?）無污染：真正環保的脫氮方法，沒有2次污染，無沉淀物。</span></div> <div style="text-align: center;"> <br /> <span style="font-size:14px;"><img alt="" src="/uploads/allimg/200723/1-200H3120345913.jpg" style="width: 605px; height: 375px;" /></span></div> <h3> 　　二、延伸：廢水氨氮幾種常見處理方法原理和特點</h3> <div> </div> <div> <span style="font-size:14px;">　　<strong>1、折點氯化法</strong>：該方法是將氯氣或次氯酸鈉通入廢水中的NH3-N，氧化成N2的化學脫氮工藝。在處理氨氮廢水過程中，所需的氯氣量取決于溫度、PH值和氨氮的濃度。氧化每克氨氮需要9~10mg氯氣，PH值在6~7時為最佳反應區間，接觸時間為0.5~2小時。</span></div> <div> </div> <div> <span style="font-size:14px;">　　特點：氯化法處理率高，效果穩定，不受溫度影響。不過雖然投資較少，氮運行費用較高，只適用于處理低濃度氨氮廢水。</span></div> <div> </div> <div> <span style="font-size:14px;">　　<strong>2、MAP沉淀法 :</strong>在氨氮廢水中，投加磷鹽和鎂鹽，使廢水中污染物，生成溶解度很小的沉淀物或聚合物，達到去除氨氮的效果。</span></div> <div> </div> <div> <span style="font-size:14px;">　　特點：廢水中氨氮，能作為肥料得以回收，若廢水中磷酸根較高，只需投加鎂鹽，少量投加或不投加磷鹽，即可達到脫氮除磷作用，但三者之間的比例需要控制得當。</span></div> <div> </div> <div> <span style="font-size:14px;">　　<strong>3、選擇性離子交換法</strong>：指在固體顆粒和液體的界面上，發生的離子交換過程。離子交換法，選用對NH4+離子，有很強選擇性的沸石，作為交換樹脂，可以很好地去除氨氮。</span></div> <div> </div> <div> <span style="font-size:14px;">　　特點：沸石使用成本低，對NH4+有很強的選擇性。該工藝簡單、投資省，具有較高的去除率和穩定性。適用于中低濃度的氨氮廢水，對于高濃度的氨氮廢水，會因樹脂再生頻繁而造成操作困難。</span></div> <div> </div> <div> <span style="font-size:14px;">　　<strong>4、膜分離技術</strong>：該工藝是利用膜的選擇性，達到去除氨氮的效果。</span></div> <div> </div> <div> <span style="font-size:14px;">　　特點：該方法氨氮回收率高、無二次污染。該工藝流程簡單、不消耗藥劑、運行過程中消耗的電量與廢水中氨氮的濃度成正比。</span></div> <div> </div> <div> <span style="font-size:14px;">　<strong>　5、生物法</strong>：指廢水中的氨氮在微生物的作用下，通過硝化和反硝化等反應，最終形成氮氣，從而達到去除氨氮的效果。</span></div> <div> </div> <div> <span style="font-size:14px;">　　特點：生物脫氮法可去除多種含氮化合物，二次污染小且比較經濟，因此在國內外運用最多。不足是占地面積大，低溫時去除效率低。</span></div> <div> </div> <div> <span style="font-size:14px;">　　<strong>6、化學法：</strong>投加化學藥劑，藥劑中的有效成分使之與氨氮反應，變成無毒無害的氣體揮發，達到去除氨氮的效果。</span></div> <div> </div> <div> <span style="font-size:14px;">　　特點：5分鐘，去除率可達到96%以上，無二次污染，使用簡單、方便，反應后的廢水可直接排放。</span></div> <div style="text-align: center;"> <br /> <span style="font-size:14px;"><img alt="" src="/uploads/allimg/200723/1-200H3120356406.jpg" style="width: 605px; height: 375px;" /></span></div> <div> <span style="font-size:14px;">　　以上是小編針對廢水氨氮各種使用方法操作的要求有哪些，以及常見的幾種處理方法原理和特點分別是什么的相關新聞報道。</span></div> <div> </div> <div align="center"></div> </div> </div> </div> <div class="pgfy"> <div class="pgfyl"> <p class="last">上一篇：<a href="/xwzx/gsxw/217.html">廢水處理藥劑分為哪幾類呢？選擇它可以按照這些方法來！</a> </p> <p class="next">下一篇：<a href="/xwzx/gsxw/227.html">城市景觀水分類：氨氮超標的五大原因，常見去除方法大揭曉！</a> </p> </div> <div class="pgfyr"><a href="/cpzs/" rel="nofollow" title="[返回列表]">[返回列表]</a> </div> <div class="clear"></div> </div> </div> </div> <div class="clear"></div> </div> <div class="footer"> <div class="navgrp2" style="width: 1200px;margin: 0 auto;"> <ul class="nav2"> <li><a href="/" title="網站首頁">網站首頁</a></li> <li><a href="http://www.deejovicxltd.com/xwzx/gsxw/220.html" title="脫氮除磷" ><span></span>脫氮除磷</a></li> <li><a href="http://www.deejovicxltd.com/cpzs/212.html" title="稀土氨氮處理" ><span></span>稀土氨氮處理</a></li> <li><a href="http://www.deejovicxltd.com/xwzx/hydt/242.html " title="二甲基酰胺氨氮處理" ><span></span>二甲基酰胺氨氮處理</a></li> 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