【廢氣處理】總結各個VOCs治理技術的優點、缺點、難點-廣東華順環?？萍加邢薰?/title> <meta name="keywords" content="廢氣處理,粉塵處理,UV光解凈化器" /> <meta name="description" content="廣東華順環?？萍加邢薰局饕aUV光解凈化器，噴淋塔，活性炭凈化器；提供粉塵處理，廢氣處理，污水處理等服務；歡迎來電咨詢或來公司實地考察。" />   <link href="cssjs/newsrelated.css" rel="stylesheet" type="text/css" /> <link charset="utf-8" href="cssjs/indexcss.css" rel="stylesheet" type="text/css" /> <script language="JavaScript" type="text/javascript" src="cssjs/indexjs.js"></script> <link href="cssjs/headcss.css" rel="stylesheet" type="text/css" /> <script> var uaTest = /Android|webOS|Windows Phone|iPhone|ucweb|ucbrowser|iPod|BlackBerry/i.test(navigator.userAgent.toLowerCase()); var touchTest = 'ontouchend' in document; if(uaTest && touchTest){ window.location.href='http://m.hs-jeson.com '; } </script>  <meta http-equiv="Cache-Control" content="no-transform" /> <meta http-equiv="Cache-Control" content="no-siteapp" /> </head> <body onload="themax();init();"> <div style="position:fixed;left:-9000px;top:-9000px;"><thead 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objImg.style.width=w1; objImg.style.height=h1; } } </script> <div class="column_content_page_content" style="width:1100px; margin: 0 auto; line-height:180%;"><p> 【<a href="http://www.phil2roues.com/products-279381-0-0.html" target="_blank"><strong>廢氣處理</strong></a>】<span style="line-height:2;"> VOCs主要包括烷烴、烯烴、芳香烴、鹵代烴、含氧烴、氮烴、硫烴、低沸點多環芳烴等。其中常見的VOCs</span><span style="line-height:2;">種類有甲苯、二甲苯、對-二氯苯、乙苯、苯乙烯、甲醛、乙醛等。</span> </p> <p style="text-align:center;"> <span style="line-height:2;"><img src="uploadfile/image/20181218/20181218093504_1209768122.jpg" alt="" /><br /> </span> </p> <p> <span style="line-height:2;"> 近年來，VOCs排放每年逐年增長，給環境造成了重大污染，VOCs治理引起社會各界關注；因VOCs成份復雜</span><span style="line-height:2;">多樣，因此治理難度非常大；VOCs廢氣處理過程中針對不同的成分采取不同的治理技術，以下是小編總結的各個廢氣處理技術的優缺點。</span> </p> <p> <span style="line-height:2;"> VOCs防治技術</span><br /> <span style="line-height:2;"> 根據大氣中VOCs產生的原理和VOCs的理化性質，其控制技術可以分為兩大類，過程控制和末端控制。過程控制</span><span style="line-height:2;">是針對VOCs的生產過程，從VOCs的原理上減少VOCs的產生，一般通過工藝提升、技術改造和泄漏控制來實現。</span><span style="line-height:2;">末端控制則是針對VOCs的化學特性，著力于VOCs廢氣的治理，利用燃燒、分解等方法來控制VOCs的排放。</span> </p> <p> <span style="white-space:normal;line-height:2;"> 1、光催化技術（<a href="http://www.phil2roues.com/" target="_blank"><strong>UV光解凈化器</strong></a>）</span><br style="white-space:normal;" /> <span style="white-space:normal;line-height:2;"> 原理：光催化劑納米粒子在一定波長的光線照射下受激生產電子空穴對，空穴分解催化劑表面吸附的水產生氫</span><span style="white-space:normal;line-height:2;">氧自由基，電子使其周圍的氧還原成活性離子氧，從而具備極強的氧化還原能力，將光催化劑表面的各種污染</span><span style="white-space:normal;line-height:2;">物摧毀；</span><br style="white-space:normal;" /> <span style="white-space:normal;line-height:2;"> 優點：條件溫和，常溫常壓;設備簡單、維護方便;減少甚至無二次污染；</span><br style="white-space:normal;" /> <span style="white-space:normal;line-height:2;"> 缺點：占地面積大;氣候影響大;工況變化影響大.</span><br style="white-space:normal;" /> <span style="white-space:normal;line-height:2;"> 2、等離子體技術</span><br style="white-space:normal;" /> <span style="white-space:normal;line-height:2;"> 原理：等離子體場富集大量活性物種，如離子、電子、激發態的原子、分子及自由基等;活性物種將污染物分子</span><span style="white-space:normal;line-height:2;">離解小分子物質。</span><br style="white-space:normal;" /> <span style="white-space:normal;line-height:2;"> 適用范圍：低濃度VOCs，室內空氣凈化。</span><br style="white-space:normal;" /> <span style="white-space:normal;line-height:2;"> </span><span style="white-space:normal;line-height:2;">特點：實現VOCs低溫去除;適用于低濃度、大風量的VOCs;處理效率高，能耗低;凈化并清新空氣。</span><br /> <span style="line-height:2;"> 3、吸附技術</span><br /> <span style="line-height:2;"> 原理：利用吸附劑與污染物質(VOCs)進行物理結合或化學反應并將污染成分去除；</span><br /> <span style="line-height:2;"> 適用于：中低濃度的VOCs的凈化；</span><br /> <span style="line-height:2;"> </span><span style="line-height:2;">優點：去除效率高，易于自動化控制；</span><br /> <span style="line-height:2;"> 缺點：不適用于高濃度、高溫的有機廢氣，且吸附材料需定期更換。</span><br /> <span style="line-height:2;"> 4、吸收技術</span><br /> <span style="line-height:2;"> </span><span style="line-height:2;">原理：由廢氣和洗滌液接觸將VOCs從廢氣中移走，之后再用化學藥劑將VOCs中和、氧化或其它化學反應破壞；</span><br /> <span style="line-height:2;"> 適用于：高水溶性VOCs，不適用于低濃度氣體；</span><br /> <span style="line-height:2;"> 優點：技術成熟、可去除氣態和顆粒物、投資成本低、占地空間小、傳質效率高、對酸性氣體高效去除；</span><br /> <span style="line-height:2;"> 缺點：有后續廢水處理問題、顆粒物濃度高、會導致塔堵塞、維護費用高、可能冒白煙。</span> </p> <p> <span style="white-space:normal;line-height:2;"> 5、膜分離技術</span><br style="white-space:normal;" /> <span style="white-space:normal;line-height:2;"> </span><span style="white-space:normal;line-height:2;">原理：用人工合成的膜分離VOCs物質；</span><br style="white-space:normal;" /> <span style="white-space:normal;line-height:2;"> 適用范圍：高濃度VOCs，回收效率高于97%；</span><br style="white-space:normal;" /> <span style="white-space:normal;line-height:2;"> 優點：可回收組分;高效;可集成其余技術；</span><br style="white-space:normal;" /> <span style="white-space:normal;line-height:2;"> 缺點：成本較高;會造成膜污染;膜的穩定性差;通量小。</span><br /> <span style="line-height:2;"> </span><span style="line-height:2;">6、冷凝技術</span><br /> <span style="line-height:2;"> 原理：冷凝將廢氣降溫至VOCs成份之露點以下，使之凝結為液態后加以回收之方法；</span><br /> <span style="line-height:2;"> 適用范圍：多用于高濃度、單一組分有回收價值的VOCs的處理。處理成本較高，故通常VOCs濃度≥5000ppm；</span><br /> <span style="line-height:2;"> 方才適用冷凝處理，其效率介于50～85%之間;濃度≥1%以上時，則回收效率可達90%以上。冷凝法也經常搭配</span><span style="line-height:2;">其它控制技術，例如:焚化、吸附、洗滌等作為前處理步驟。</span><br /> <span style="line-height:2;"> </span><span style="line-height:2;">7、生物降解技術</span><br /> <span style="line-height:2;"> 原理：利用微生物對廢氣中的污染物進行消化代謝，將污染物轉化為無害的水、二氧化碳及其它無機鹽類；</span><br /> <span style="line-height:2;"> </span><span style="line-height:2;">適用范圍：以微生物可分解物質為主，污染物為微生物的食物來源，可以生物處理的污染物包括：碳氫氧組成</span><span style="line-height:2;">的各類有機物、簡單有機硫化物、有機氮化物、硫化氫及氨氣等無機類等；</span><br /> <span style="line-height:2;"> 優點：能耗低、費用低;氧化完全;能耗低；</span><br /> <span style="line-height:2;"> 缺點：能量利用率;光催化劑失活;可見光。</span><br /> <span style="line-height:2;"> 本文關鍵詞【<a href="http://www.phil2roues.com/products-279381-0-0.html" target="_blank">廢氣處理</a>,<a 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