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class="ly_crumb"> <img src="/skins/270528/images/crumb_icon.png" /><p>當(dāng)前位置：<a href="/">首頁</a> > <a href="/article.html">技術(shù)文章</a> > <span>氨氮與硝酸鹽氮控制的概述</span></p> </div>   <div id="d9dn1b3" class="ly_NyNewsdetail"> <h1 class="NyNewsdetail_title">氨氮與硝酸鹽氮控制的概述</h1> <div id="d9dn1b3" class="NyNewsdetail_tips">更新時(shí)間：2019-10-09 點(diǎn)擊次數(shù)：2049</div> <div id="d9dn1b3" class="NyNewsdetail_con"> <p><strong><span style="font-family:宋體"> </span><span style="font-size:14px">污水處理</span></strong><span style="font-size:14px">廠生化降解除氮過程中，除了<strong>溶解氧</strong>外，還有兩個(gè)重要的參數(shù)不容忽視，那就是<strong>氨氮</strong>和硝酸氮。這三個(gè)參數(shù)互相關(guān)聯(lián)，它們之間的對(duì)應(yīng)關(guān)系能否調(diào)整得恰到好處，直接關(guān)系到<strong>污水處理</strong>的效果和曝氣的電力消耗。在硝化過程中，鼓風(fēng)機(jī)引入足量的空氣，溶解氧濃度維持在約2mg/L的平均水平，隨著氨氮（<strong>氨氮在線監(jiān)測儀）</strong>濃度的減小，硝酸氮濃度相應(yīng)增大。在反硝化過程中，鼓風(fēng)機(jī)停止工作，<strong>溶解氧</strong>慢慢降低到0，這時(shí)進(jìn)行的是厭氧反應(yīng)，硝酸氮逐步被還原成氮?dú)猓^程成功完成，氨氮濃度逐漸增高。之前經(jīng)常也用ORP這個(gè)參數(shù)來監(jiān)測控制硝化和反硝化工藝，但<strong>ORP</strong>這個(gè)參數(shù)不太穩(wěn)定，有時(shí)會(huì)誤警報(bào)，提前終止反硝化工藝。</span></p><p><span style="font-size:14px"> 污水的成分是不固定的，需根據(jù)污水的實(shí)際成分(如C、N、P等的實(shí)際比例)靈活調(diào)整所需要的曝氣量。這不僅可以節(jié)省大量的電力消耗，還能夠保證良好的凈化處理效率。早期設(shè)計(jì)的污水廠只監(jiān)測溶解氧單一參數(shù)，而未考慮氨氮和硝氮濃度變化會(huì)造成不可忽視的負(fù)面效果；有時(shí)只考慮去除有機(jī)碳，又忽略了硝化反應(yīng)也需要消耗氧氣，往往導(dǎo)致溶解氧不足；或者為去除更多的有機(jī)碳而單純增加溶解氧。反而抑制了反硝化進(jìn)程，影響脫氮效果。</span></p><p><span style="font-size:14px"> 不難看出，硝化與反硝化工藝過程蘊(yùn)含著實(shí)現(xiàn)多變量化控制的可行性和可操作性。由此引申至整個(gè)脫氮除磷工藝過程來解析，更具實(shí)現(xiàn)多維極值控制的潛在規(guī)律有待探求。</span></p> </div> <div id="d9dn1b3" class="ly_PrevNext"> <ul> <li>上一篇：<a href="/szhcy-Article-1988534/">反滲透裝置控制概述</a></li> <li>下一篇：<a href="/szhcy-Article-1986925/">廢水處理工藝過程神經(jīng)網(wǎng)絡(luò)智能控制</a></li> </ul> </div> </div>   <div id="d9dn1b3" class="foot_box"> <div id="d9dn1b3" class="foot_t"> <div id="d9dn1b3" class="w1200"> <a href="/">網(wǎng)站首頁</a>　|　<a href="/aboutus.html">關(guān)于我們</a>　|　<a href="/products.html">產(chǎn)品中心</a>　|　<a href="/news.html">新聞動(dòng)態(tài)</a>　|　<a href="/article.html">技術(shù)文章</a>　|　<a href="/honor.html">榮譽(yù)資質(zhì)</a>　|　<a href="/order.html" target="_blank">在線留言</a>　|　<a href="/contact.html">聯(lián)系我們</a> <span><a href="javascript:;" class="toTop"></a></span> </div> </div> <div id="d9dn1b3" class="foot_b"> <div id="d9dn1b3" class="w1200"> <div id="d9dn1b3" class="f_b_t clear"> <div id="d9dn1b3" class="f_contact fl"> <p>聯(lián)系我們 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