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text-align: left;">化學(xué)需氧量作為一項重要的水質(zhì)檢測指標，一直是工業(yè)廢水處理中普遍存在的問(wèn)題。那COD超標的原因和解決辦法有哪些？</p><p style="text-align:center"><img src="/upfile/202102/202122114114762.jpg" title="上海污水處理.jpg" alt="上海污水處理.jpg" width="500" height="331" border="0" vspace="0" style="border: 0px; padding: 0px; margin: 0px; width: 500px; height: 331px;"/></p><p style="text-indent: 2em; text-align: left;"> </p><p style="text-indent: 2em; text-align: left;"><strong>一、COD超標的原因</strong></p><p style="text-indent: 2em; text-align: left;">1、污水cod超標原因——(自身生產(chǎn)原因)</p><p style="text-indent: 2em; text-align: left;"><span style="text-indent: 2em;">可以說(shuō)，在企業(yè)生產(chǎn)過(guò)程中，Cod是不可避免的。例如食品加工企業(yè)的食品殘渣和水體過(guò)剩，化工廠(chǎng)的S離子、氯離子等還原物質(zhì)，電鍍廢水等，都是腌制過(guò)程中廢水COD超標的原因。</span><br/></p><p style="text-indent: 2em; text-align: left;"><span style="text-indent: 2em;">2、污水cod超標原因——（水處理工藝缺陷）</span><br/></p><p style="text-indent: 2em; text-align: left;"><span style="text-indent: 2em;">1.生化處理(水溫過(guò)低):溫度過(guò)低時(shí)，細菌的活性也會(huì )降低，從而減少cod的分解。</span><br/></p><p style="text-indent: 2em; text-align: left;"><span style="text-indent: 2em;">2.水中溶解氧不足:水中溶解氧不足以滿(mǎn)足菌種本身的代謝，菌種就會(huì )變得無(wú)聊。廢水的處理效率大大降低。</span><br/></p><p style="text-indent: 2em; text-align: left;"><span style="text-indent: 2em;">3.廢水中某些指標(氨氮、重金屬)濃度過(guò)高:如果廢水中某些指標過(guò)高，生化池中的細菌會(huì )中毒，cod不會(huì )降解。</span><br/></p><p style="text-indent: 2em; text-align: left;"><span style="text-indent: 2em;">COD去除劑COD分解劑COD降解劑</span></p><p style="text-indent: 2em; text-align: left;"><strong>二、COD廢水的危害</strong></p><p style="text-indent: 2em; text-align: left;"><span style="text-indent: 2em;">化學(xué)需氧量越高，水被有機物污染越嚴重。有毒有機物進(jìn)入水體，不僅會(huì )危害魚(yú)等水體生物，還會(huì )通過(guò)食物鏈的豐富進(jìn)入人體，引起慢性中毒。</span></p><p style="text-indent: 2em; text-align: left;"><strong><span style="text-indent: 2em;">三、COD處理方法</span></strong></p><p style="text-indent: 2em; text-align: left;"><span style="text-indent: 2em;">1、物理法：</span></p><p style="text-indent: 2em; text-align: left;"><span style="text-indent: 2em;">一般在廢水中加入絮凝劑，用格柵和其他物理格柵工具處理部分污染物，帶走部分有機物。但是，這種方法基本上只對濃度數千的COD發(fā)揮作用，一般到數百的時(shí)候很難用這種方法處理。</span><br/></p><p style="text-indent: 2em; text-align: left;"><span style="text-indent: 2em;">2、生物法：</span><br/></p><p style="text-indent: 2em; text-align: left;"><span style="text-indent: 2em;">在污水處理廠(chǎng)有許多應用，通常依靠各種細菌、活性污泥和其他生物處理。通過(guò)有氧和無(wú)氧兩種處理方式，形成了完整的處理流程，能有效去除可溶性和膠體生化有機物。但是，該方法的前期調整需要較大的工程投入資金，后續處理也需要技術(shù)人員的維護，日常維護要求高，需要慎重選擇。</span><br/></p><p style="text-indent: 2em; text-align: left;"><span style="text-indent: 2em;">3、化學(xué)法：</span><br/></p><p style="text-indent: 2em; text-align: left;"><span style="text-indent: 2em;">利用化學(xué)劑的氧化作用對有機物進(jìn)行分解，該方法分解效率高，處理時(shí)間短，一般都是直接在出水口投加化學(xué)劑，操作不費事。</span><br/></p><p><br style="text-indent: 2em; text-align: left;"/></p> <div id="62pthcs" class="list_page page_group"><ul></ul></div>  </div> <div id="iuehxyu" class="pre">上一篇： <a href="/gongsidongtai/16.html" title="噴漆廢水一噸的處理費用大概多少？">噴漆廢水一噸的處理費用大概多少？</a> </div> <div id="wt6mc3v" class="next">下一篇： <a href="/gongsidongtai/18.html" title="醫院污水處理工程技術(shù)規范">醫院污水處理工程技術(shù)規范</a> </div> </div> </div> <div id="1bo9jiu" class="clear"></div> </div> <div id="zlq5d0n" class="f_bg"> <div id="ud05o89" class="footer w"> <div id="hzd4v49" class="foot_col foot_col_01" > <img src="/theme/2021/images/logo_white.svg" width="150" style="margin-bottom:5px;" /> <p>江蘇瑞德斯主營(yíng)業(yè)務(wù)為環(huán)保裝備研發(fā)、制造、銷(xiāo)售、運營(yíng)維護，環(huán)保技術(shù)服務(wù)，環(huán)保工程設計、施工。公司具有較強的自主研發(fā)能力，并與國內高層次科研機構合作，聚焦噴涂污染治理、高濃度工業(yè)污水治理、危廢減量技術(shù)服務(wù)。</p> <a href="/about/"><i class="fa fa-long-arrow-right" aria-hidden="true"></i> 了解更多 </a> </div> <div id="tlqckjo" class="foot_col foot_col_02" > <DL> <dt><a href="/product/">產(chǎn)品與技術(shù)</a></dt> <dd><a href="/product/161.html" target="_blank" title="蜂窩紙盒過(guò)濾器">蜂窩紙盒過(guò)濾器</a></dd> <dd><a href="/product/55.html" target="_blank" title="噴涂循環(huán)水自動(dòng)排渣及漆渣預脫水系統">噴涂循環(huán)水自動(dòng)排渣及漆渣預脫水系統</a></dd> <dd><a href="/product/42.html" target="_blank" title="低溫熱風(fēng)漆渣干化機">低溫熱風(fēng)漆渣干化機</a></dd> <dd><a href="/product/43.html" target="_blank" title="污水處理工程">污水處理工程</a></dd> <dd><a href="/wushuichulishebei/" target="_blank" title="水處理專(zhuān)業(yè)環(huán)保設備">水處理專(zhuān)業(yè)環(huán)保設備</a></dd> </DL> <DL> <dt><a >快捷導航</a></dt> <dd><a href="/Cases/" target="_blank" >項目案例</a></dd> <dd><a href="/partners/" target="_blank" >合作伙伴</a></dd> <dd><a href="/news/" target="_blank" >新聞中心</a></dd> <dd><a href="/about/" target="_blank" >關(guān)于我們</a></dd> </DL> </div> <div id="bzlb3l0" class="foot_col foot_col_03" > <dl> <dt>聯(lián)系我們</dt> <dd><i class="fa fa-map-marker"></i> 常州市鐘樓經(jīng)濟開(kāi)發(fā)區松濤路66號</dd> <dd><i class="fa fa-phone"></i> 0519-89609928</dd> <dd style="display: none;"><i class="fa fa-envelope"></i> sale@cnreduce.com</dd> <dd><i class="fa fa-globe"></i> www.984487.com</dd> <div id="0uuqcyn" class="bdsharebuttonbox"><a href="#" class="bds_more" data-cmd="more"></a><a href="#" class="bds_qzone" data-cmd="qzone" title="分享到QQ空間"></a><a href="#" class="bds_tsina" data-cmd="tsina" title="分享到新浪微博"></a><a href="#" class="bds_tqq" data-cmd="tqq" title="分享到騰訊微博"></a><a href="#" class="bds_renren" data-cmd="renren" title="分享到人人網(wǎng)"></a><a href="#" class="bds_weixin" data-cmd="weixin" title="分享到微信"></a></div> </dl> </div> </div> <div id="gj40o1p" class="copyright"> <div id="zziue54" class="w clearfix"> Copyright ? 2021 江蘇瑞德斯環(huán)?？萍加邢薰? 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