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style="font-family:宋體">污水處理</span></span></strong><span style="font-size:10.5000pt"><span style="font-family:宋體">中時(shí)，其缺點(diǎn)便顯現(xiàn)出來，包括日常維護(hù)比較復(fù)雜和頻繁、受水流動(dòng)性影響以及經(jīng)常需要校準(zhǔn)等。 </span></span></p><p><span style="font-size:10.5000pt"><span style="font-family:宋體"> 關(guān)于溶解氧測量的研究表明，電化學(xué)傳感器存在明顯的問題和局限性。由于電解液在氧化還原反應(yīng)中不斷消耗，并且陽極被反應(yīng)副產(chǎn)物(銀的鹵化物)不斷覆蓋，Clark標(biāo)準(zhǔn)電池一般需要定期進(jìn)行維護(hù)。對于所有的電化學(xué)電池來說，對化學(xué)藥劑或者苛性的電解液進(jìn)行更換是必須進(jìn)行的維護(hù)工作。通常，電化學(xué)傳感器所接觸的氧濃度越高，所需要的維護(hù)工作量就越大。此外，電化學(xué)</span></span><strong><span style="font-size:10.5pt"><span style="font-family:宋體">傳感器</span></span></strong><span style="font-size:10.5000pt"><span style="font-family:宋體">的膜也較為脆弱。溫度和壓力變化都會(huì)影響膜和陰極之間的電解液層厚度，從而影響測定度的變化。對于電化學(xué)電池來說，維持一定的流動(dòng)性是測定氧濃度的基本要求。為了使電化學(xué)電池內(nèi)受擴(kuò)散控制的電化學(xué)反應(yīng)達(dá)到平衡，需要在膜表面維持一個(gè)小的流量(一般約為200mL/min)。在這個(gè)流量以下，測定結(jié)果受水流的影響非常大。此外，過高的流速同樣會(huì)對膜和陰極電解液層厚度產(chǎn)生影響，從而影響測定結(jié)果，這與傳感器的構(gòu)造也有一定關(guān)系。</span></span></p> </div> <div id="35hf15jpnp" class="ly_PrevNext"> <ul> <li>上一篇：<a href="/szhcy-Article-2043682/">電導(dǎo)分析法的原理</a></li> <li>下一篇：<a href="/szhcy-Article-2041496/">循環(huán)冷卻水的水質(zhì)如何在線監(jiān)測余氯濃度</a></li> </ul> </div> </div>   <div id="35hf15jpnp" class="foot_box"> <div id="35hf15jpnp" class="foot_t"> <div id="35hf15jpnp" 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> 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