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id="h9bpkuijf" class="ly_crumb"> <img src="/skins/30724/images/crumb_icon.png" /><p>當(dāng)前位置：<a href="/">首頁</a> > <a href="/article.html">技術(shù)文章</a> > <span>污水處理廠的除磷問題</span></p> </div> <div id="h9bpkuijf" class="ly_NyNewsdetail"> <h1 class="NyNewsdetail_title">污水處理廠的除磷問題</h1> <div id="h9bpkuijf" class="NyNewsdetail_tips">更新時(shí)間：2015-07-30 點(diǎn)擊次數(shù)：4370</div> <div id="h9bpkuijf" class="NyNewsdetail_con"> <p style="text-align: center;"><span style="font-size:10.5000pt"><span style="font-family:宋體"> <strong> </strong></span></span><strong>污水處理廠的除磷問題</strong><span style="font-size:10.5000pt"><span style="font-family:宋體"></span></span><br></p><p><span style="font-size:10.5000pt"><span style="font-family:宋體"> 一般活性污泥法應(yīng)首先考慮生物除磷，以化學(xué)除磷進(jìn)行補(bǔ)充處理，來降低運(yùn)行成本。生化處理除磷，如解決不好回流污泥水中的NO3ˉN產(chǎn)生返銷化與厭氧釋磷爭奪碳源的矛盾，還有回流水中溶解氧過高，將破壞厭氧環(huán)境，對于除磷效果受到不利硬性。為此，便產(chǎn)生了使用計(jì)量泵來投加甲醇、乙酸鹽外加碳源的設(shè)計(jì)方案，這種不得已的增加運(yùn)行成本的設(shè)計(jì)思想是令人難以接受的。還有靠活性污泥的內(nèi)源呼吸產(chǎn)生的慢性生化碳源，其效果并不顯著，也不是理想的辦法。</span></span></p><p> <span style="font-size:10.5000pt"><span style="font-family:宋體">城市污水中既含有P又含有N。TN一般30-40mg/L，TP 4-8mg/L,不是單一的存在，所以除磷脫氮相矛盾的設(shè)計(jì)污泥負(fù)荷和泥令統(tǒng)一。而出現(xiàn)了以除磷為主的設(shè)計(jì)觀點(diǎn)：</span></span></p><p><span style="font-size:10.5000pt"><span style="font-family:宋體">⑴水體富營養(yǎng)化的研究，認(rèn)為無機(jī)氮與正磷酸鹽之比N/P﹥15時(shí)，水體富營養(yǎng)化決定P。</span></span></p><p><span style="font-size:10.5000pt"><span style="font-family:宋體">污水處理工藝的管理P比N也容易控制。</span></span></p><p><span style="font-size:10.5000pt"><span style="font-family:宋體">⑵國內(nèi)外受納水體和我國污水廠允許排放標(biāo)準(zhǔn)，只要也是控制P的標(biāo)準(zhǔn)。</span></span></p><p><span style="font-size:10.5000pt"><span style="font-family:宋體">⑶設(shè)計(jì)和控制要點(diǎn)之一，設(shè)置生物選擇的前部厭氧區(qū)，重要作用是完成厭氧釋磷，在中間曝氣區(qū)聚磷菌可以超量多倍本身生長需要，吸收水中溶解的磷，變?yōu)榛钚晕勰唷?/span></span></p><p> <span style="font-size:10.5000pt"><span style="font-family:宋體">所要說明的是，污水的升級處理主要發(fā)展方向仍是生化方向，據(jù)發(fā)達(dá)國家的科學(xué)分析，生物處理的耗能，為物化處理的35％左右。另外，物化處理，往往是污染質(zhì)的轉(zhuǎn)移，不但增大后處理的污泥量，也為無害化、資源化綜合利用造成困難。</span></span></p><p> <span style="font-size:10.5000pt"><span style="font-family:宋體">微環(huán)境的設(shè)計(jì)理念，對含碳有機(jī)污染物在處理的同時(shí)，將達(dá)到合理的利用。對生物酶和生化反應(yīng)熱的利用也是可行的。</span></span></p> </div> <div id="h9bpkuijf" class="ly_PrevNext"> <ul> <li>上一篇：<a href="/Article-247970.html">意大利seko電磁計(jì)量泵AKS603安裝尺寸圖</a></li> <li>下一篇：<a href="/Article-218550.html">機(jī)械隔膜計(jì)量泵主要優(yōu)勢</a></li> </ul> </div> </div>  <div id="h9bpkuijf" class="ly_foot"> <div id="h9bpkuijf" class="ly_Ftmain"> <div id="h9bpkuijf" class="ly_Ftcon"> <div id="h9bpkuijf" class="ly_FtLeft"> <ul> <li> <div id="h9bpkuijf" class="Ft_tit">關(guān)于我們</div> <a 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