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col-md-push-3"> <div class="con"> <div class="title"><span class="glyphicon glyphicon-home"></span> 當前位置：<a href="/">首頁</a>>><a href="/html/news/">新聞中心</a>>><a href="/html/news/hyxw/">行業新聞</a></div> <div class="show"> <div class="info text-center"> <div class="s">化學除磷工藝的設計規范介紹</div> <div class="x">作者：管理員　　日期：2020-12-16 11:13:07　人氣：<span id="hits">778</span>　</div> </div> <div class="my"> <table style="width:100%;" cellpadding="2" cellspacing="0" border="1" bordercolor="#CCCCCC"> <tbody> <tr> <td> <p class="MsoNormal" align="center" style="text-align:center;"> <b><span style="font-size:16px;font-family:SimSun;line-height:2;">化學除磷工藝的設計規范</span></b><b><span style="font-size:16px;font-family:SimSun;"><span style="font-size:16px;font-family:SimSun;line-height:2;">介紹</span><br /> <div style="text-align:left;"> <b style="font-family:"font-size:12px;"><span style="font-size:16px;font-family:SimSun;line-height:2;"> </span></b><span style="font-weight:normal;text-indent:24pt;font-size:16px;font-family:SimSun;line-height:2;">在室外排水設計規范</span><span style="font-weight:normal;text-indent:24pt;"><span style="font-size:16px;font-family:SimSun;line-height:2;"> GB50014-2006(2014年版)中對于化學除磷設計做了以下幾個規定：</span><br /> <span style="font-size:16px;font-family:SimSun;line-height:2;"> </span></span><span style="text-indent:24pt;font-weight:normal;"><span style="font-size:16px;font-family:SimSun;line-height:2;">1、關于化學除磷應用范圍的規定。</span><br /> <span style="font-size:16px;font-family:SimSun;line-height:2;"> </span></span><span style="text-indent:24pt;font-weight:normal;font-size:16px;font-family:SimSun;line-height:2;">《城鎮污水處理廠污染物排放標準》</span><span style="text-indent:24pt;font-weight:normal;font-size:16px;font-family:SimSun;line-height:2;">GB 18918規定的總磷的排放標準：當達到一級A標準時，在2005年12月3</span><span style="text-indent:24pt;font-weight:normal;"><span style="font-size:16px;font-family:SimSun;line-height:2;">1日前建設的污水廠為1mg/L，2006年1月1日起建設的污水廠為0.5mg/L。一般城鎮污水經生物除磷后，較難達到后者的標準，故可輔以化學除磷，以滿足出水水質的要求。</span><br /> <span style="font-size:16px;font-family:SimSun;line-height:2;"> </span></span><span style="text-indent:24pt;font-weight:normal;"><span style="font-size:16px;font-family:SimSun;line-height:2;">污泥厭氧處理過程中的上清液、脫水機的過濾液和濃縮池上清液等，由于在厭氧條件下，有大量含磷物質釋放到液體中，若回流入污水處理系統，將造成污水處理系統中磷的惡性循環，因此應先進行除磷，一般宜采用化學除磷。</span><br /> <span style="font-size:16px;font-family:SimSun;line-height:2;"> </span></span><span style="text-indent:24pt;font-weight:normal;"><span style="font-size:16px;font-family:SimSun;line-height:2;">2、關于藥劑投加點的規定。</span><br /> <span style="font-size:16px;font-family:SimSun;line-height:2;"> </span></span><span style="text-indent:24pt;font-weight:normal;"><span style="font-size:16px;font-family:SimSun;line-height:2;">以生物反應池為界，在生物反應池前投加為前置投加，在生物反應池后投加為后置投加，投加在生物反應池內為同步投加，在生物反應池前、后都投加為多點投加。</span><br /> <span style="font-size:16px;font-family:SimSun;line-height:2;"> </span></span><span style="text-indent:24pt;font-weight:normal;font-size:16px;font-family:SimSun;line-height:2;">前置投加點在原污水處，形成沉淀物與初沉污泥一起排除。前置投加的優點是還可去除相當數量的有機物，因此能減少生物處理的負荷。后置投加點是在生物處理之后，形成的沉淀物通過另設的固液分離裝置進行分離，這一方法的出水水質好，但需增建固液分離設施。同步投加點為初次沉淀池出水管道或生物反應池內，形成的沉淀物與剩余污泥一起排除。多點投加點是在沉砂池、生物反應池和固液分離設施等位置投加藥劑，其可以降低投藥總量，增加運行的靈活性。由于</span><span style="text-indent:24pt;font-weight:normal;"><span style="font-size:16px;font-family:SimSun;line-height:2;">pH值的影響，不可采用石灰作混凝劑。在需要硝化的場合，要注意鐵、鋁對硝化菌的影響。</span><br /> <span style="font-size:16px;font-family:SimSun;line-height:2;"> </span></span><span style="text-indent:24pt;font-weight:normal;"><span style="font-size:16px;font-family:SimSun;line-height:2;">3、關于藥劑種類、劑量和投加點宜根據試驗確定</span><span style="font-size:16px;font-family:SimSun;line-height:2;">的規定。</span><br /> <span style="font-size:16px;font-family:SimSun;line-height:2;"> </span></span><span style="text-indent:24pt;font-weight:normal;"><span style="font-size:16px;font-family:SimSun;line-height:2;">由于污水水質和環境條件各異，因而宜根據試驗確定最佳藥劑種類、劑量和投加點。</span><br /> <span style="font-size:16px;font-family:SimSun;line-height:2;"> </span><span style="font-family:SimSun;font-size:16px;line-height:2;"></span></span><span style="text-indent:24pt;font-weight:normal;font-size:16px;font-family:SimSun;line-height:2;">如果您還想了解更多相關技術，誠摯歡迎您與我們聯系。</span> </div> </span></b> </p> <p class="MsoNormal" style="text-indent:24.0000pt;"> <br /> </p> <p class="MsoNormal" style="text-indent:24.0000pt;"> <br /> </p> <span style="font-size:16px;font-family:SimSun;line-height:2;"></span><br /> </td> </tr> </tbody> </table> <br /> <span style="font-size:16px;font-family:SimSun;line-height:2;"></span> </div> <div class="pz"> <div class="fy"> <p><a href="/html/news/hyxw/224.html">水處理藥劑的種類</a></p> <p><a href="/html/news/hyxw/214.html">氟化物排放標準及處理方法</a></p> </div> </div> <div id="comment_staus"></div> </div> </div> </div> <div class="col-md-3 col-md-pull-9"> <div 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