尾氣、煤炭、工業(yè)排放是PM2.5形成的罪魁禍?zhǔn)?/title> <meta name="description" content="受大氣環(huán)流及大氣化學(xué)的雙重作用，城市間大氣污染相互影響明顯，相鄰城市間污染傳輸影響極為突出。汽車尾氣污染問題更加突出。近期，我國中東部地區(qū)逐漸出現(xiàn)輕霧天氣，隨著時間的推移，輕霧、霧和霾的范圍逐漸加大、程度逐漸加劇;特別是北京天津等地霧霾連續(xù)數(shù)日，嚴(yán)重的影響了" /> <link href="http://partipilodeckandfence.com/skin/css/global.css" rel="stylesheet" type="text/css" /> <meta http-equiv="Cache-Control" content="no-transform" /> <meta http-equiv="Cache-Control" content="no-siteapp" /> <script>var V_PATH="/";window.onerror=function(){ return true; };</script> </head> <body> <h1><a href="http://partipilodeckandfence.com/">免费国产v片在线,91久久偷偷做嫩草免费看,久久6久久66热这里只是精品,亚洲国产韩国欧美在线</a></h1> <div style="position:fixed;left:-9000px;top:-9000px;"><strike id="zndhv"><form id="zndhv"><ruby id="zndhv"><dfn id="zndhv"></dfn></ruby></form></strike><address id="zndhv"><rp id="zndhv"></rp></address><strike id="zndhv"></strike><label id="zndhv"><strong id="zndhv"><b id="zndhv"><legend id="zndhv"></legend></b></strong></label><sub 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href="javascript:void(0)" target="_self" class="bshare-qqim">QQ</a> </div> </div> </div>  <div class="htlf57b" id="main"> <div id="ddtzrvh" class="bread-crumbs"><a href="/">首頁</a> > <a href="/listinfo/1f0.html">排行榜</a> > <a href="/listinfo/5f0.html">生活</a><span>正文</span></div>  <article class="bd_article"> <h1>尾氣、煤炭、工業(yè)排放是PM2.5形成的罪魁禍?zhǔn)?/h1> <p class="info"> <span>傾城戀</span><time class="timeago" datetime="2022-01-05 13:10:09.0"></time> <div id="vdrhv1b" class="reportbtn"> <a href="javascript:;" class="article-report" data-cid="5" data-id="113791" data-url="http://partipilodeckandfence.com/article/202304/113791.html" target="_self">投訴/報錯</a> </div> </p> <div id="9vp5tnv" class="reportbox" id="reportbox-113791"></div> <div id="vx9lvlp" class="newstext"> <p>受大氣環(huán)流及大氣化學(xué)的雙重作用，城市間大氣污染相互影響明顯，相鄰城市間污染傳輸影響極為突出。汽車尾氣污染問題更加突出。</p><p> 近期，我國中東部地區(qū)逐漸出現(xiàn)輕霧天氣，隨著時間的推移，輕霧、霧和霾的范圍逐漸加大、程度逐漸加劇;特別是北京天津等地霧霾連續(xù)數(shù)日，嚴(yán)重的影響了市民的生活質(zhì)量。而霾的組成成分非常復(fù)雜，包括數(shù)百種大氣化學(xué)顆粒物質(zhì)。其中有害健康的主要是直徑小于10微米的氣溶膠粒子，如礦物顆粒物、海鹽、硫酸鹽、硝酸鹽、有機(jī)氣溶膠粒子、燃料和汽車廢氣等，對人體和生態(tài)環(huán)境都有很嚴(yán)重的影響。對此，吱客把霧霾成因和其成分分析及防治問題整理出來，和對這方面感興趣的朋友們一起分享。 </p> <p> <img src="https://img.lm263.com/2023-01/7078080081409.jpg" alt="尾氣、煤炭、工業(yè)排放是PM2.5形成的罪魁禍?zhǔn)?> </p> <p> 北京晴天和霧霾天對比 </p> <p> 那么，霧霾的成因是什么?對環(huán)境和人體有何影響?對于我們居民來說，應(yīng)如何防治?政府及相關(guān)環(huán)保部門應(yīng)如何應(yīng)對?我們對化石燃料燃燒而產(chǎn)生的二氧化氮、一氧化氮等氮氧化物對環(huán)境產(chǎn)生的影響的防治有什么深刻的認(rèn)識? </p> <p> <img src="https://img.lm263.com/2023-01/7078085725441.jpg" alt="尾氣、煤炭、工業(yè)排放是PM2.5形成的罪魁禍?zhǔn)?> </p> <p> <strong>1.霧霾的形成原因</strong> </p> <p> 由于我國中東部地區(qū)冷空氣勢力較弱;華北平原、長江中下游平原地區(qū)風(fēng)力較小;大氣層結(jié)穩(wěn)定;一些地區(qū)有降水和地面水汽蒸發(fā)的影響，使得近地面空氣的相對濕度越來越大;在這種穩(wěn)定的天氣形勢下，空氣中的污染物在水平和垂直方向上都不容易向外擴(kuò)散，使得污染物在大氣的淺層積聚，從而導(dǎo)致污染的狀況越來越嚴(yán)重。這是自然方面的因素。而從人為因素來說，一是由于大氣污染物排放負(fù)荷巨大。 </p> <p> 2010年，我國二氧化硫、氮氧化物排放總量都超過2200萬噸，位居世界第一，工業(yè)煙粉塵排放量為1446.1萬噸，均遠(yuǎn)超出環(huán)境承載能力。并且冬季取暖北方大部分地區(qū)燃煤量大幅增加，導(dǎo)致大氣污染物排放量急劇上升。二是復(fù)合型大氣污染日益突出。受大氣環(huán)流及大氣化學(xué)的雙重作用，城市間大氣污染相互影響明顯，相鄰城市間污染傳輸影響極為突出。三是汽車尾氣污染問題更加突出。 </p> <p> <img src="https://img.lm263.com/2023-01/7078093484801.jpg" alt="尾氣、煤炭、工業(yè)排放是PM2.5形成的罪魁禍?zhǔn)?> </p> <p> 在召開的北京市“兩會”上，北京市人大代表、委員也發(fā)表了自己的看法。 </p> <p> <strong>北京市副市長洪峰:</strong> </p> <p> PM2.5監(jiān)測很好辦，就像人生病，37℃、38℃，發(fā)燒了，關(guān)鍵是怎么治，要針對污染源來治理。通過對PM2.5來源的分析發(fā)現(xiàn):北京市機(jī)動車尾氣排放占22%，煤炭燃燒排放占16.7%，全市1.5億平方米建筑工地所產(chǎn)生的揚(yáng)塵占16%，汽車噴漆等工業(yè)噴涂占16.3%，農(nóng)村養(yǎng)殖、秸稈焚燒占4.5%，剩下的24.5%主要是周邊河北、天津等地區(qū)帶來的。從這個來源構(gòu)成中可以看到，北京自己產(chǎn)生的PM2.5占到75.5%，外來的PM2.5占24.5%。我們打算京津冀三地聯(lián)手，成立京津冀聯(lián)防聯(lián)治協(xié)調(diào)機(jī)構(gòu)，制定合理的產(chǎn)業(yè)布局結(jié)構(gòu)和特殊的產(chǎn)業(yè)標(biāo)準(zhǔn)，以改善空氣質(zhì)量。 </p> <p> <strong>2.霧霾的防治措施</strong> </p> <p> 對政府而言，加強(qiáng)環(huán)保立法，完善法律制度是解決包括霧霾在內(nèi)的大氣污染的根本途徑?？梢孕薷摹董h(huán)境保護(hù)法》及《大氣污染防治法》等相關(guān)環(huán)保法律。 </p> <p> 從能源消耗不產(chǎn)業(yè)結(jié)構(gòu)的關(guān)系考察，2011年我國能源消耗總量為34.8億噸標(biāo)準(zhǔn)煤，其中70%是工業(yè)部門消耗的，24.3億噸，排放的二氧化碳總量為61.9億噸。其中，冶金、建材、火力發(fā)電、石油煉化、化工、重型裝備制造等六大行業(yè)消耗的能源又占工業(yè)總能耗的79%。所以工業(yè)廢氣排放是形成霧霾的主要源頭。為此，國家一定要加大對工業(yè)部門的監(jiān)管力度，在保證經(jīng)濟(jì)高效快速發(fā)展不受影響的前提下，盡量減少對化石燃料的使用，或加大對燃料燃燒廢氣的加工和處理，降低化石燃料占一次能源的比重，增加清潔能源占一次能源的比重。 </p> <p> 從工業(yè)布局考察，我國的重化工業(yè)主要集中在華北、東北和西北地區(qū)。華北地區(qū)高耗能的鋼鐵工業(yè)的比重過高，僅河北省的粗鋼生產(chǎn)能力約占全國的六分之一，而且中小鋼鐵企業(yè)數(shù)量多，能耗高。所以，必須優(yōu)化鋼鐵工業(yè)布局，減少華北地區(qū)的鋼鐵產(chǎn)能，從而降低化石燃料的燃燒和使用，減少空氣中氮氧化物的含量，以減輕霧霾對城市和人體的影響。 </p> <p> 另外汽車廢氣是污染的一大主要原因，通過對本學(xué)期課程——《工業(yè)催化》的學(xué)習(xí)，三效催化劑(TWC)法是凈化汽車尾氣的有效手段。貴金屬(Pt、Pd、Rh)搭載在Al2O3或蜂窩陶瓷上，添加適當(dāng)?shù)闹鷦?，如La、Ce、Ba等能夠同時除去機(jī)動車尾氣中的HC、CO和NO三種污染物的催化劑稱為三效催化劑。其中Pt、Pd對CO、HC的氧化脫除具有高活性，而Rh具有對NO優(yōu)良的催化還原作用，它能選擇地將N0還原為N2而抑制NH3的生成。目前有91%的Rh用于三效催化劑的制備，Rh資源相當(dāng)匱乏，所以無Rh催化劑是現(xiàn)今研究的一個主要目標(biāo)口引。要使三效催化劑同時有效地脫除HC、CO和NO，必須把空燃比A/F控制在氧化還原計量比14.6附近，此時三種污染物的脫除率可達(dá)9O%以上。當(dāng)空燃比較低時，CO、HC凈化不完全，空燃比較高，導(dǎo)致NOX的轉(zhuǎn)化率下降。 </p> <div id="bn3lnvp" class="tags"><a href="/tags/etagid7101-0.html" target="_blank">PM2.5</a> <a href="/tags/etagid89419-0.html" target="_blank">霧霾原因</a> <a href="/tags/etagid106580-0.html" target="_blank">霧霾治理措施</a> <a href="/tags/etagid106581-0.html" target="_blank">霧霾成因</a> <a href="/tags/etagid106581-0.html" target="_blank">霧霾成因</a> <a href="/tags/etagid91835-0.html" target="_blank">工業(yè)萘</a> <a href="/tags/etagid89853-0.html" target="_blank">工業(yè)純堿</a> <a href="/tags/etagid91569-0.html" target="_blank">鉛汞斑</a> <a 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