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</div><div> 首先，準(zhǔn)確度方面。中國(guó)目前已經(jīng)安裝的<strong><a href="http://www.qdjlst.com/shzmhb-ParentList-1399849/" target="_blank">COD在線監(jiān)測(cè)儀</a></strong>獲取數(shù)據(jù)的準(zhǔn)確度還不能普遍達(dá)到作為達(dá)標(biāo)判斷的直接執(zhí)法依據(jù)的要求。</div><div> </div><div> 第二，監(jiān)測(cè)頻率差距。由于中國(guó)的污染源大部分采用重鉻酸鉀型的<strong>COD在線監(jiān)測(cè)儀</strong>，監(jiān)測(cè)結(jié)果產(chǎn)生周期一般1-2小時(shí)。這對(duì)于中國(guó)的不穩(wěn)定的排水水質(zhì)來(lái)說(shuō)，頻率過(guò)低，極容易遺漏一些臨時(shí)沖擊負(fù)荷。</div><div> </div><div> 第三，監(jiān)測(cè)儀器廢液污染問(wèn)題。中國(guó)目前幾乎所有的COD在線監(jiān)測(cè)設(shè)備采用的都是以重鉻酸鉀型的氧化還原滴定法和光度測(cè)量法為原理設(shè)計(jì)制造的儀器，會(huì)產(chǎn)生含汞、鉻和強(qiáng)酸的廢液，存在二次污染隱患。</div> </div> <div id="m0wuomu" class="ny_PrevNext"> <div id="m0wuomu" class="Prev">上一篇： <a href="/Article-1431448.html">哈希cod消解管的主要優(yōu)勢(shì)</a></div> <div id="m0wuomu" class="Next">下一篇： <a href="/Article-1405491.html">分析EVQ241消解安全閥的系統(tǒng)特點(diǎn)</a></div> </div> </div> </div> </div> </div>   <div id="m0wuomu" class="pc_foot"> <div id="m0wuomu" 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