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class="b">公示公告</a> </div> <div class="child-content"> <div class="intro-con xgwow animate__fadeInUp"> <div class="detail-title xgwow animate__fadeInUp"> <h3 class="detail-cn">生活污水處理有哪些？</h3> <p class="detail-date"> 2023-02-13 10:06 </p> </div> <div class="detail-des xgwow animate__fadeInUp"> <p style="text-align: center;"> <img src="/upfiles/21/2-2112231P420.png" alt=""> </p> <p><span style="font-size: 14px;"> 生活污水處理一般分為四個步驟：預處理、生化處理、深度處理和消毒處理。生活污水進入污水處理廠后，第一步是預處理。預處理的主要作用是截留污水中較大的懸浮物，減少后續工藝對設備的損壞。第一步是去除粗格柵間和污水提升泵房污水中的大懸浮固體。一般情況下，直徑大于20mm的懸浮物和粗格柵過濾后的水經過過濾，重力進入進水泵房，然后由污水泵提升至西格柵池進行二次截流。在細格柵池和曝氣沉砂池中，主要是去除小雜物。一般情況下，直徑大于5mm的懸浮物被過濾掉，砂礫石由砂水分離器排出，以防堵塞和磨損。后續管道設備通過粗格柵和細格柵的二次截流，進入曝氣沉砂池，通過空氣擴散管道進行曝氣，去除附著在污水表面的有機物，完成第一步預處理。</span></p><p><span style="font-size: 14px;"><br/></span></p><p><span style="font-size: 14px;"> 污水經預處理后進入生化處理第二步。生化處理是污水處理的核心環節。生化池的核心技術是活性污泥處理工藝，該工藝基于微生物降解有機物的原理。污水在生化池厭氧區進行推流運動。推壓后的污水經內循環輸送至缺氧區進行硝化反硝化，然后進入好氧區進行硝化反應脫磷，同時降低生化需氧量BOD。生化池處理后的混合液進入二沉池。在生化池旁邊，有一個類似攪拌器的圓形池，即二沉池。污水經生化池降解后進入此處，通過離心力和物流沉淀將泥水分離，沉淀池刮泥機每小時旋轉一次，將水中的油污和浮渣分離，同時將污泥刮出污泥池，生化處理完成。</span></p><p><span style="font-size: 14px;"><br/></span></p><p><span style="font-size: 14px;"> 然后讓污水進入高效沉淀池進行第三次非深度處理。通過化學處理加入混凝劑和助凝劑，污水中的懸浮物凝結成污泥和沉淀，污泥收集到池底，高效沉淀池由循環泵抽出，剩余的顆粒和膠體流入V型過濾器。通過V型過濾器的砂過濾器進一步過濾，完成深度處理。最后一步是消毒。深度處理后的污水進入紫外線消毒池進行消毒。經紫外線線或臭氧消毒后達標，可直接排入河流，污水處理廠處理后的水一般通過巴比特計量池，流量統計后排放。污水處理廠排放的廢水應符合有關部門的規定和《城市污水處理廠污染物排放標準》，其中生化需氧量BOD、總懸浮物TSS、凱氏氮TkN、，總磷TP和其他指標應低于標準中規定的值。</span></p><p><span style="font-size: 14px;"><br/></span></p><p><span style="font-size: 14px;"> 不同城市、不同地區的污水處理廠處理工藝相似，但污水處理原理和排放標準相同。然而，由于城市環境和廢水來源不同，最終產生的廢物和污染也不同。</span></p><p><br/></p> </div> <div class="detail-page"> <p>上一篇：<a href='/news/news_599.html#p'>關于醫院污水處理方法有哪些？</a> </p> <p>下一篇：<a href='/news/news_597.html#p'>醫院污水處理設備使用方法和優勢</a> </p> </div> </div> </div> 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