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<p>隨著(zhù)我國水污染形勢的加劇，國家不斷加強水污染治理力度。繼城市污水得到有效處理后，工業(yè)污水成為了水處理領(lǐng)域的熱點(diǎn)。</p><p>然而，在工業(yè)污水排放的污染物中，利用傳統的污水處理方法很難處理一些高毒有機物和無(wú)機物成分。如何對它們加以回收利用成為行業(yè)近年來(lái)探索的重要方向。在近日召開(kāi)的清華環(huán)境與發(fā)展高端論壇上，中國工程院院士、南京大學(xué)環(huán)境學(xué)院教授張全興就利用樹(shù)脂吸附技術(shù)進(jìn)行有毒污染物治理并實(shí)現產(chǎn)業(yè)化進(jìn)行了介紹。</p><p>從上世紀80年代以來(lái)，世界有機工業(yè)生產(chǎn)中心從歐美轉移到中國和印度，這大大加快了我國化學(xué)工業(yè)的發(fā)展，但由此也造成了嚴重的有機毒物污染，而有機毒物和重金屬的污染將成為水污染中最突出的問(wèn)題。</p><p>特別需要指出的是，化工、輕工、紡織、印染在我國的東部沿海和東部地區比較發(fā)達，而工業(yè)高毒廢水的排放直接和民眾的生命健康相關(guān)，因此我國高度重視有機毒物的污染問(wèn)題。在2011年，我國就建立了持久性有機污染物的統計報表制度。2012年頒布了全國主要行業(yè)持久性有機污染物防治“十二五”規劃，所以發(fā)展有毒污染物減排、資源化、深度凈化和安全保障新技術(shù)具有非常重要的意義。</p><p>樹(shù)脂吸附技術(shù)在處理有毒有機廢水方面效果明顯，回收利用價(jià)值高</p><p>我國的化工、輕工、紡織、印染等行業(yè)，每年要排放上百億噸的有毒有機物質(zhì)。通常通過(guò)前端治理、清潔生產(chǎn)或者末端治理減排，解決污染物實(shí)現達標排放。我們通過(guò)近20年的工作，認為樹(shù)脂吸附技術(shù)是實(shí)現工業(yè)廢水減排和資源化應用的重要手段之一。</p><p>圍繞樹(shù)脂吸附技術(shù)處理有毒有機廢水，科研人員主要開(kāi)展三方面研究。首先，通過(guò)制孔劑和樹(shù)脂骨架的調整和表面修飾合成一系列離子交換樹(shù)脂和吸附樹(shù)脂，并開(kāi)展吸附動(dòng)力學(xué)和熱力學(xué)的研究。第二是在此基礎上進(jìn)行吸附、脫附技術(shù)和分離回收有機物工藝的研究。最后，在生產(chǎn)上加以應用。</p><p>我們將裝有吸附劑的樹(shù)脂柱通過(guò)含有毒有機物的溶液，就可以對其有效吸附。再通過(guò)有效的洗脫劑進(jìn)行洗脫，就可以將有機物加以回收和應用。</p><p>具體而言，是將廢水通過(guò)各種預處理以后得到的真溶液通入裝有樹(shù)脂的塔將有毒物質(zhì)進(jìn)行吸附分離，吸附流出液有的可以直接達標排放。有的需要再經(jīng)過(guò)生化、氧化深度處理，然后才能達標排放。留在塔里的有毒物質(zhì)，通過(guò)選擇合適的洗脫劑就可以把有機物有效的洗脫并加以回收。</p><p>對于可資源化的有毒有機廢水，主要分為5大類(lèi)，分別是氯苯及其衍生物類(lèi)、芳香酚類(lèi)、芳香胺類(lèi)、芳香羧酸類(lèi)及芳香磺酸類(lèi)和多功能基取代有機化合物。我國樹(shù)脂吸附工藝有的已經(jīng)可以實(shí)現污染物的全部分離回收，尾水也能夠加以利用，這樣可以達到清潔生產(chǎn)的目的。有的尾水通過(guò)回收有毒有機物再經(jīng)深度處理可實(shí)現達標排放。</p><p>樹(shù)脂吸附技術(shù)處理各類(lèi)廢水超過(guò)1億噸/年，回收化工原料約10 萬(wàn)噸/年，直接經(jīng)濟效益達兩億元以上</p><p>對于氯苯及其衍生物，我國的年產(chǎn)量有30多萬(wàn)噸。產(chǎn)區集中在長(cháng)江下游和淮河下游流域，給水環(huán)境安全造成了巨大壓力。其生產(chǎn)過(guò)程中要排放含8%~10% HCl的水洗廢水和2000~8000 mg/L的三價(jià)鐵以及200~1000 mg/L的苯及氯化苯，浪費了大量鐵資源并轉移有機污染物。</p> </div>  </div> </section> </article>   <section class="foot"> <div id="splbcjm" class="m"> <div id="5nandwn" class="fl foot_nav"> <ul> <li> <a href="/html/about/index.html"><h3>關(guān)于我們</h3></a> <div id="gxpvdu3" class="list"> <a href="/html/introduction/index.html">公司簡(jiǎn)介</a> </div> </li> <li> <a href="/html/product/index.html"><h3>產(chǎn)品中心</h3></a> <div id="ehp3xlk" class="list"> <a href="/html/sbcp/index.html">煙氣脫硫</a> <a href="/html/dyfw/index.html">離子交換、吸附與分離材料</a> <a href="/html/jsfw/index.html">系統集成裝置</a> </div> </li> <li> <a href="/html/solution/index.html"><h3>解決方案</h3></a> <div id="n8da85r" class="list"> </div> </li>  <li> <a href="/html/news/index.html"><h3>新聞中心</h3></a> <div id="vcphsev" class="list"> </div> </li> <li> <a 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