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uk-margin-small-top"><p>BOD(生化需氧量)：是指在有氧的條件下，水中微生物分解有機物的生物化學過程中所需溶解氧的質量濃度。</p><p>BOD是一種環境監測指標，用于監測水中有機物污染情況，有機物都可以被微生物分解，此過程中需要消耗氧，如果水中溶解氧不足以供給微生物的需要，水體就處理污染狀態。</p><p>COD(化學需氧量)：是在一定的條件下，采用一定的強氧化劑處理水樣時，所消耗的氧化劑量。它反映了水中受物質污染的程度，化學需氧量越大，說明水中受有機物的污染越嚴重。</p><p>COD以mg/L表示，通過水質監測儀器檢測出的COD數值，水質可分為五大類，其中一類和二類COD≤15mg/L，基本上能達到飲用水標準，數值大于二類的水不能作為飲用水的，其中三類COD≤20mg/L、四類COD≤30mg/L、五類COD≤40mg/L屬于污染水質，COD數值越高，污染就越嚴重。</p><p><br></p></div> <div class="uk-visible@m" data-item="share" data-sites="weibo,wechat,qq,qzone,douban" data-title="分享頁面" data-description="分享頁面"></div> </div> </div> </div> <div class="uk-width-auto@m"> <div class="sidebar"> <div class="author-wrapper border-1 uk-background-default"> <div class="new-list"> <div class="uk-panel"> <h3 class="uk-h4">最新動態</h3> <ul> <li class="uk-clearfix"> <a title="益世恒環?？萍颊\招各地代理商，加盟商" href="/article-detail/BnA7508b"> 益世恒環?？萍颊\招各地代理商，加盟商 </a> <span class="element element-text">2023-02-14 14:23:34</span> </li> <li class="uk-clearfix"> <a 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