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14:39:19 閱讀次數：14655</div> <div id="355rlzj" class="InfoContent"> <p><p><p><b style="color: rgb(51, 51, 51); font-family: 思源黑體; font-size: 13.3333px;"><b><b><b><b><b><b><a href="http://www.yuanchunlin.com/public/addons/cms/go/index.html?url=http%3A%2F%2Fwww.wjshb.com%2F" target="_blank" style="color: rgb(102, 102, 102); font-size: 14px;"><b>電絮凝</b></a></b></b></b></b></b></b></b><span style="color: rgb(51, 51, 51); font-family: 思源黑體; font-size: 13.3333px;">的原理和技術(shù)特點(diǎn)</span><br style="color: rgb(51, 51, 51); font-family: 思源黑體; font-size: 13.3333px;"><span style="color: rgb(51, 51, 51); font-family: 思源黑體;"> (1) 電絮凝的原理<br> 將金屬電極（鋁或鐵）置于被處理的水中，后通以直流電，此時(shí)金屬陽(yáng)極發(fā)生<a href="http://www.yuanchunlin.com/public/addons/cms/go/index.html?url=http%3A%2F%2Fwww.wjshb.com%2F" target="_blank" style="color: rgb(102, 102, 102);"><b>電化學(xué)</b></a>反應，溶出AI3+或Fe2+等離子并在水解而發(fā)生混凝或絮凝作用，其過(guò)程和機理與化學(xué)混凝基本相同。<br><br> 采用AI作為陽(yáng)極時(shí)電絮凝的基本原理主要反應分析如下:</span><img src="http://wjshb.b.5545.cn/uploads/20220611/116e04ba6ce30a1e4ad599ba0c57db82.jpg" data-filename="filename" style="width: 100%;"><span style="color: rgb(51, 51, 51); font-family: 思源黑體;"> 陽(yáng)極主要是AI電解生成AI3+反應：</span><br></p><span style="color: rgb(51, 51, 51); font-family: 思源黑體;"> AI AI3++3 e </span><br style="color: rgb(51, 51, 51); font-family: 思源黑體;"><span style="color: rgb(51, 51, 51); font-family: 思源黑體;"> </span><br style="color: rgb(51, 51, 51); font-family: 思源黑體;"><span style="color: rgb(51, 51, 51); font-family: 思源黑體;"> 在堿性條件下：</span><br style="color: rgb(51, 51, 51); font-family: 思源黑體;"><span style="color: rgb(51, 51, 51); font-family: 思源黑體;"> AI3++ 3OH－ AI(OH)3 </span><br style="color: rgb(51, 51, 51); font-family: 思源黑體;"><span style="color: rgb(51, 51, 51); font-family: 思源黑體;"> </span><br style="color: rgb(51, 51, 51); font-family: 思源黑體;"><span style="color: rgb(51, 51, 51); font-family: 思源黑體;"> 在酸性條件下：</span><br style="color: rgb(51, 51, 51); font-family: 思源黑體;"><span style="color: rgb(51, 51, 51); font-family: 思源黑體;"> AI3++ 3H2O AI(OH)3+3H+ </span><br style="color: rgb(51, 51, 51); font-family: 思源黑體;"><span style="color: rgb(51, 51, 51); font-family: 思源黑體;"> </span><br style="color: rgb(51, 51, 51); font-family: 思源黑體;"><span style="color: rgb(51, 51, 51); font-family: 思源黑體;"> 當采用Fe作為陽(yáng)極時(shí)，陽(yáng)極上發(fā)生與AI相似的金屬溶解的電化學(xué)反應，其反應如下</span><br style="color: rgb(51, 51, 51); font-family: 思源黑體;"><span style="color: rgb(51, 51, 51); font-family: 思源黑體;"> Fe Fe2++2e </span><br style="color: rgb(51, 51, 51); font-family: 思源黑體;"><span style="color: rgb(51, 51, 51); font-family: 思源黑體;"> </span><br style="color: rgb(51, 51, 51); font-family: 思源黑體;"><span style="color: rgb(51, 51, 51); font-family: 思源黑體;"> 在堿性條件下：</span><br style="color: rgb(51, 51, 51); font-family: 思源黑體;"><span style="color: rgb(51, 51, 51); font-family: 思源黑體;"> Fe2++2OH－ Fe(OH) 2 </span><br style="color: rgb(51, 51, 51); font-family: 思源黑體;"><span style="color: rgb(51, 51, 51); font-family: 思源黑體;"> </span><br style="color: rgb(51, 51, 51); font-family: 思源黑體;"><span style="color: rgb(51, 51, 51); font-family: 思源黑體;"> 在酸性條件下：</span><br style="color: rgb(51, 51, 51); font-family: 思源黑體;"><span style="color: rgb(51, 51, 51); font-family: 思源黑體;"> 4Fe2++O2+2H2O 4Fe3++ 4OH－ </span><br style="color: rgb(51, 51, 51); font-family: 思源黑體;"><br style="color: rgb(51, 51, 51); font-family: 思源黑體;"><span style="color: rgb(51, 51, 51); font-family: 思源黑體;"> 同時(shí)陽(yáng)極發(fā)生H2O電解析出O 2的反應:</span><br style="color: rgb(51, 51, 51); font-family: 思源黑體;"><span style="color: rgb(51, 51, 51); font-family: 思源黑體;"> 2H2O O2+4H++4e </span><img src="http://wjshb.b.5545.cn/uploads/20220611/2df91019f6ec306c13b714a103dc4dc3.jpg" data-filename="filename" style="width: 100%;"><span style="color: rgb(51, 51, 51); font-family: 思源黑體;"> 在不同的PH條件下,金屬離子及其水解聚合產(chǎn)物可發(fā)揮壓縮雙電層、吸附中和及沉淀網(wǎng)捕作用。電極表面釋放出的微小氣泡加速了顆粒的碰撞過(guò)程，密度小時(shí)就會(huì )上浮而分離，密度大時(shí)則下沉而分離，有助于迅速去除廢水中的溶解態(tài)、懸浮態(tài)膠體化合物。陽(yáng)極表面的直接電氧化作用對水中溶解性有機物和還原性無(wú)機物有很強的氧化能力，陰極釋放出的生態(tài)氫則具有較強的還原作用。</span></p><br style="color: rgb(51, 51, 51); font-family: 思源黑體;"><span style="color: rgb(51, 51, 51); font-family: 思源黑體;"> 通常，電化學(xué)反應器內進(jìn)行的化學(xué)反應過(guò)程是極其復雜的。在電絮凝反應中同時(shí)發(fā)生了電絮凝、電氣浮和電氧化過(guò)程，水中的溶解性、膠體和懸浮態(tài)污染物在混凝、氣浮和氧化作用下均可得到有效轉化和去除。</span><br style="color: rgb(51, 51, 51); font-family: 思源黑體;"><br style="color: rgb(51, 51, 51); font-family: 思源黑體;"><span style="color: rgb(51, 51, 51); font-family: 思源黑體;"> </span><a href="http://www.yuanchunlin.com/public/addons/cms/go/index.html?url=http%3A%2F%2Fwww.wjshb.com%2Findex.php%2Fdxn%2F226.html" target="_blank" style="color: rgb(102, 102, 102); font-family: 思源黑體;"><b></b></a><b style="color: rgb(51, 51, 51); font-family: 思源黑體;"><a href="http://www.yuanchunlin.com/public/addons/cms/go/index.html?url=http%3A%2F%2Fwww.wjshb.com%2F" target="_blank" style="color: rgb(102, 102, 102);"><b></b></a><b><a href="http://www.yuanchunlin.com/public/addons/cms/go/index.html?url=http%3A%2F%2Fwww.wjshb.com%2F" target="_blank" style="color: rgb(102, 102, 102);"><b></b></a><b><a href="http://www.yuanchunlin.com/public/addons/cms/go/index.html?url=http%3A%2F%2Fwww.wjshb.com%2F" target="_blank" style="color: rgb(102, 102, 102);"><b></b></a><b><a href="http://www.yuanchunlin.com/public/addons/cms/go/index.html?url=http%3A%2F%2Fwww.wjshb.com%2F" target="_blank" style="color: rgb(102, 102, 102);"><b></b></a><b><a href="http://www.yuanchunlin.com/public/addons/cms/go/index.html?url=http%3A%2F%2Fwww.wjshb.com%2F" target="_blank" style="color: rgb(102, 102, 102);"><b></b></a><b><a href="http://www.yuanchunlin.com/public/addons/cms/go/index.html?url=http%3A%2F%2Fwww.wjshb.com%2F" target="_blank" style="color: rgb(102, 102, 102);"><b></b></a><b><a href="http://www.yuanchunlin.com/public/addons/cms/go/index.html?url=http%3A%2F%2Fwww.wjshb.com%2F" target="_blank" style="color: rgb(102, 102, 102);"><b>高壓脈沖電絮凝</b></a></b></b></b></b></b></b></b><span style="color: rgb(51, 51, 51); font-family: 思源黑體;">設備無(wú)需加藥的每個(gè)電解單元發(fā)生如下反應：</span><br style="color: rgb(51, 51, 51); font-family: 思源黑體;"><span style="color: rgb(51, 51, 51); font-family: 思源黑體;"> a、除六價(jià)鉻</span><br style="color: rgb(51, 51, 51); font-family: 思源黑體;"><span style="color: rgb(51, 51, 51); font-family: 思源黑體;"> 陰極上發(fā)生還原反應，產(chǎn)生氫分子，并有二價(jià)及三價(jià)鐵析出。</span><br style="color: rgb(51, 51, 51); font-family: 思源黑體;"><span style="color: rgb(51, 51, 51); font-family: 思源黑體;"> 反應式如下：</span><br style="color: rgb(51, 51, 51); font-family: 思源黑體;"><span style="color: rgb(51, 51, 51); font-family: 思源黑體;"> 2H＋+2e→2H→H2</span><br style="color: rgb(51, 51, 51); font-family: 思源黑體;"><br style="color: rgb(51, 51, 51); font-family: 思源黑體;"><span style="color: rgb(51, 51, 51); font-family: 思源黑體;"> 此種新生態(tài)氫[H]具有很強的還原能力，將六價(jià)鉻還原成三價(jià)鉻，然后以氫氧化鉻沉淀去除。</span><br style="color: rgb(51, 51, 51); font-family: 思源黑體;"><span style="color: rgb(51, 51, 51); font-family: 思源黑體;"> Cr2O72－+6Fe2＋+14H＋→2Cr3++6Fe3++7H2O</span><br style="color: rgb(51, 51, 51); font-family: 思源黑體;"><span style="color: rgb(51, 51, 51); font-family: 思源黑體;"> CrO42－+3Fe2＋+8H＋→Cr3++3Fe3++4H2O</span><br style="color: rgb(51, 51, 51); font-family: 思源黑體;"><span style="color: rgb(51, 51, 51); font-family: 思源黑體;"> Cr3++3OH－→Cr(OH)3↓</span><br style="color: rgb(51, 51, 51); font-family: 思源黑體;"><span style="color: rgb(51, 51, 51); font-family: 思源黑體;"> Fe3++3OH－→Fe(OH)3↓</span><br style="color: rgb(51, 51, 51); font-family: 思源黑體;"><br style="color: rgb(51, 51, 51); font-family: 思源黑體;"><span style="color: rgb(51, 51, 51); font-family: 思源黑體;"> b、除</span><a href="http://www.yuanchunlin.com/public/addons/cms/go/index.html?url=http%3A%2F%2Fwww.wjshb.com%2Findex.php%2Fdxnal%2F428.html" target="_blank" style="color: rgb(102, 102, 102); font-family: 思源黑體;"><b>重金屬</b></a><span style="color: rgb(51, 51, 51); font-family: 思源黑體;">離子</span><br style="color: rgb(51, 51, 51); font-family: 思源黑體;"><span style="color: rgb(51, 51, 51); font-family: 思源黑體;"> 金屬極板受電化學(xué)作用，以離子狀態(tài)溶于水中，電解過(guò)程中H＋大量消耗，OH－逐漸增多，電解液逐漸變?yōu)閴A性，（PH：7-9）并生成穩定氫氧化物沉淀。</span><br style="color: rgb(51, 51, 51); font-family: 思源黑體;"><span style="color: rgb(51, 51, 51); font-family: 思源黑體;"> Cr 3++3OH－→ Cr (OH)3↓</span><br style="color: rgb(51, 51, 51); font-family: 思源黑體;"><span style="color: rgb(51, 51, 51); font-family: 思源黑體;"> Cu2++2OH－→Cu(OH)2↓</span><br style="color: rgb(51, 51, 51); font-family: 思源黑體;"><span style="color: rgb(51, 51, 51); font-family: 思源黑體;"> Ni2++2OH－→Ni(OH)2↓</span><br style="color: rgb(51, 51, 51); font-family: 思源黑體;"><span style="color: rgb(51, 51, 51); font-family: 思源黑體;"> …… </span><br style="color: rgb(51, 51, 51); font-family: 思源黑體;"><br style="color: rgb(51, 51, 51); font-family: 思源黑體;"><span style="color: rgb(51, 51, 51); font-family: 思源黑體;"> c、除磷</span><br style="color: rgb(51, 51, 51); font-family: 思源黑體;"><span style="color: rgb(51, 51, 51); font-family: 思源黑體;"> 在電場(chǎng)中有機磷被氧化為無(wú)機磷，同時(shí)鐵極板受電化學(xué)作用析出的Fe2＋被氧化成Fe3＋和磷酸根反應沉淀，而且能與其它金屬形成共沉淀達到最好的除磷效果。</span><br style="color: rgb(51, 51, 51); font-family: 思源黑體;"><span style="color: rgb(51, 51, 51); font-family: 思源黑體;"> Fe3＋+PO43－→FePO4↓</span><br style="color: rgb(51, 51, 51); font-family: 思源黑體;"><br style="color: rgb(51, 51, 51); font-family: 思源黑體;"><span style="color: rgb(51, 51, 51); font-family: 思源黑體;"> d、混凝作用除SS</span><br style="color: rgb(51, 51, 51); font-family: 思源黑體;"><span style="color: rgb(51, 51, 51); font-family: 思源黑體;"> 可溶性金屬極板在陽(yáng)極上解離出的Fe2＋與水溶液中離子作用，生成的Fe(OH)3。反應式如下：</span><br style="color: rgb(51, 51, 51); font-family: 思源黑體;"><span style="color: rgb(51, 51, 51); font-family: 思源黑體;"> Fe2＋+2OH－→Fe(OH)2</span><br style="color: rgb(51, 51, 51); font-family: 思源黑體;"><span style="color: rgb(51, 51, 51); font-family: 思源黑體;"> 4Fe(OH)2+O2+2H2O→4Fe(OH)3</span><br style="color: rgb(51, 51, 51); font-family: 思源黑體;"><br style="color: rgb(51, 51, 51); font-family: 思源黑體;"><span style="color: rgb(51, 51, 51); font-family: 思源黑體;"> (2)電絮凝的主要技術(shù)特點(diǎn)</span><br style="color: rgb(51, 51, 51); font-family: 思源黑體;"><span style="color: rgb(51, 51, 51); font-family: 思源黑體;"> 1、自動(dòng)程度高，操作方便簡(jiǎn)單，維護容易，勞動(dòng)強度低；</span><br style="color: rgb(51, 51, 51); font-family: 思源黑體;"><span style="color: rgb(51, 51, 51); font-family: 思源黑體;"> 2、因應水質(zhì)、水量變化時(shí)，調整靈活，應變快速；</span><br style="color: rgb(51, 51, 51); font-family: 思源黑體;"><span style="color: rgb(51, 51, 51); font-family: 思源黑體;"> 3、以交流電直接供電（工業(yè)用電220V/380V/460V可直接供電），耗電少</span><br style="color: rgb(51, 51, 51); font-family: 思源黑體;"><span style="color: rgb(51, 51, 51); font-family: 思源黑體;"> 4、設備占地面積少，約0.5m2/CMD（約僅占一般生化處理的1/5）；</span><br style="color: rgb(51, 51, 51); font-family: 思源黑體;"><span style="color: rgb(51, 51, 51); font-family: 思源黑體;"> 5、投資成本較低、使用范圍廣、污泥產(chǎn)量少，約為傳統工藝的1/3；</span><br style="color: rgb(51, 51, 51); font-family: 思源黑體;"><span style="color: rgb(51, 51, 51); font-family: 思源黑體;"> 6、可通過(guò)調節極板組合、電壓強度、電流密度、PH值、電導率等而得到最佳處理效能；</span><br style="color: rgb(51, 51, 51); font-family: 思源黑體;"><span style="color: rgb(51, 51, 51); font-family: 思源黑體;"> 7、不受環(huán)境溫度變化影響，系統工作和出水水質(zhì)能維持穩定；</span><br style="color: rgb(51, 51, 51); font-family: 思源黑體;"><span style="color: rgb(51, 51, 51); font-family: 思源黑體;"> 8、與其他工藝可靈活結合, 效能事半功倍。</span><br style="color: rgb(51, 51, 51); font-family: 思源黑體;"><br style="color: rgb(51, 51, 51); font-family: 思源黑體;"><span style="color: rgb(51, 51, 51); font-family: 思源黑體;"> (3)</span><a href="http://www.yuanchunlin.com/public/addons/cms/go/index.html?url=http%3A%2F%2Fwww.wjshb.com%2Findex.php%2Fdxn%2F228.html" target="_blank" style="color: rgb(102, 102, 102); font-family: 思源黑體;"><b>電絮凝技術(shù)</b></a><span style="color: rgb(51, 51, 51); font-family: 思源黑體;">與傳統工藝的比較</span></p><p><img src="http://wjshb.b.5545.cn/uploads/20220611/a117482874340da52714dab951842268.jpg" data-filename="filename" style="width: 100%;"><span 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