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class="news_view_click"> <span class="news_view_date1">瀏覽人氣：</span> <span id="ShoveWebControl_Text5" style="display: inline;">1171</span> </div> </div> <div id="news_view" class="news_view"> <span id="ShoveWebControl_Text4"><div>　　工業的發展往往也伴隨著大量的污水生產，隨著工業廢水的肆意排放，水污染越來越嚴重。水是人類生命之源，這樣嚴重威脅人類生命健康。在加強管理和監督的過程中，國家規定企業排放污水必須達到一定的標準，大大遏制了水污染程度。在確定排放標準時，往往需要對水體進行定量分析，以檢測各種物質的含量，因此開發了<strong>便攜式cod快速測定儀</strong>，這是企業、政府部門和科研機構檢測污水中COD含量的儀器。<br /><br /> </div><p style="text-align: center;"><img src="https://img71.ybzhan.cn/9/20220114/637777512905568025840.png" alt="便攜式cod快速測定儀" width="336" height="340" align="middle" /><br /> </p><p> </p><div>　　便攜式cod快速測定儀可用于實時測量COD，以改善廢水處理控制和工廠效率。較高的COD含量意味著樣品中有大量可氧化的有機物，這會降低溶解氧（do）的含量。溶解氧的減少導致厭氧條件，這對高等水生生物有害。在操作過程中，整個過程非常簡單，但是有一些細節需要注意。在污水處理過程中，監測到的水樣有明顯的濁度。因此，需要有代表性的抽樣才能獲得準確的監測結果。為了實現這一目標，需要充分了解以下因素：</div><div>　　1、充分搖晃水樣</div><div>　　對于高濃度廢水和處理后的中濃度廢水的測定，取樣前應將樣品瓶塞塞緊，然后充分搖晃，使水樣中含有盡可能多的顆粒和塊狀物。分散以方便去除一些更均勻和有代表性的水樣。另外，對處理后變得清澈、濃度低的基本合格的廢水，將水樣搖勻，然后取樣測定。在對大量污水進行COD測定的過程中，發現*搖晃后測得的水樣不易出現偏差，可以得出該采樣方法的典型性和代表性。</div><div>　　2、水樣搖勻后，需再次取樣。</div><div>　　因為污水中含有大量不均勻的懸浮物，如果不搖晃后快速取樣，懸浮物就會迅速下沉。采樣吸管的吸入口分布在樣品瓶中。不同地點獲得的水樣濃度也不同，尤其是懸浮物的成分差異很大，便攜式cod快速測定儀無法對污水的實際情況做出真實準確的反應，測量結果不具有代表性，因此，需要在搖動水樣后立即取樣。</div><div> </div></span> <div class="news_view_cle1"></div> </div> <div id="xn_c_3_wrap" class="xn_c_3_wrap"> <div class="bdsharebuttonbox bdshare-button-style0-16">  <div id="bdshare" class="bdshare_t bds_tools get-codes-bdshare"> <span class="bds_more">分享到：</span> <a class="bds_qzone"></a> <a class="bds_tsina"></a> <a class="bds_tqq"></a> <a class="bds_renren"></a> <a class="bds_t163"></a> <a 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