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id="fontsizer"></div> <h2>廢水處理有哪些方法</h2> <div class="c48w6m6" id="newsview_cs">作者：admin　　來(lái)源：http://m.wxbaozhenjx.com　　更新時(shí)間：2019-01-31　　閱讀數：704 </div> <div class="4u444gk" id="content">1、間歇活性污泥法(SBR)<br /> 　　間歇活性污泥法也稱(chēng)序批式活性污泥法，它由個(gè)或多個(gè)SBR池組成，運轉時(shí)，廢水分批進(jìn)入池中，順次經(jīng)歷5個(gè)獨立階段，即進(jìn)水、反響、沉積、排水和閑置。進(jìn)水及排水用水位操控，反響及沉積用時(shí)刻操控，一個(gè)運轉周期的時(shí)刻依負荷及出水要求而異，一般為4~12h，其中反響占40%，有用池容積為周期內進(jìn)水量與所需污泥體積之和。<br /> 　　比連續流法反響速度快，處理效率高，耐負荷沖擊的才能強;由于底物濃度高，濃度梯度也大，交替出現缺氧、好氧狀況，能抑制專(zhuān)性好氧菌的過(guò)量繁衍，有利于生物脫氮除磷，又由于泥齡較短，絲狀菌不可能成為優(yōu)勢，因而，污泥不易脹大;與連續流方法相比，SBR法流程短、設備結構簡(jiǎn)單，當水量較小時(shí)，只需一個(gè)間歇反響器，不需求設專(zhuān)門(mén)沉積池和調理池，不需求污泥回流，運轉費用低。<br /> 　　2、吸附再生(接觸安穩)法<br /> 　　這種方式充分使用活性污泥的初期去除才能，在較短的時(shí)刻里(10~40min)，經(jīng)過(guò)吸附去除廢水中懸浮的和膠態(tài)的有機物，再經(jīng)過(guò)液固分離，廢水即獲得凈化，BOD5可去除85%~90%左右。吸附飽和的活性污泥中，一部分需求回流的，引進(jìn)再生池進(jìn)一步氧化分化，恢復其活性;另一部分剩下污泥不經(jīng)氧化分化即排入污泥處理體系。<br /> <p> 　　分別在兩池(吸附池和再生他)或在同一池的兩段進(jìn)行。它習慣負荷沖擊的才能強，還可省去初度沉積池。首要長(cháng)處是能夠大大節省基建出資，最適于處理含懸浮和膠體物質(zhì)較多的廢水，如制革廢水、焦化廢水等，工藝靈活。但由于吸附時(shí)刻較短，處理效率不及傳統法的高。 </p> <p> <img src="UpLoadFile/image/20190131/20190131094320952095.jpg" width="350" height="263" alt="廣東環(huán)保工程公司" /> </p> 　　3、氧化溝<br /> 　　氧化溝是延時(shí)曝氣法的一種特殊型式，它的平面象跑道，溝槽中設置兩個(gè)曝氣轉刷(盤(pán))，也有用表面曝氣機、射流器或進(jìn)步管式曝氣設備的。曝氣設備作業(yè)時(shí)，推進(jìn)溝液敏捷活動(dòng)，實(shí)現供氧和拌和作用。<br /> 　　與普通曝氣法相比，氧化溝具有基建出資省，維護管理容易，處理作用安穩，出水水質(zhì)好，污泥產(chǎn)值少，還有較好的脫N、P作用，習慣負荷沖擊才能強等長(cháng)處。<br /> 　　4、連續進(jìn)水周期循環(huán)延時(shí)曝氣活性污泥法(ICEAS)<br /> 　　ICEAS反響器前部設有預反響區(占池容積的10%)。反響池由預反響區和主反響區組成，并實(shí)現連續進(jìn)水，間歇排水。預反響區一般處在厭氧和缺氧狀況，有機物在此被活性污泥吸附，該區還具有生物挑選作用，抑制絲狀菌成長(cháng)，防止污泥脹大。被吸附的有機物在主反響區內被活性污泥氧化分化。<br /> 　　反響連續進(jìn)水，處理了來(lái)水與間歇進(jìn)水不匹配的對立。但該工藝沉積作用較差、凈化作用變差，易發(fā)生污泥脹大，污泥負荷較低，反響時(shí)刻長(cháng)，設備容積增大，出資較大。<br /> 　　5、生物脫氮除磷工藝(A/A/O)<br /> 　　污水首要進(jìn)入厭氧池與回流污泥混合，在兼性厭氧發(fā)酵菌的作用下，廢水中易生物降解的大分子有機物轉化為聚磷菌能夠吸收小分子有機物(如VFA)，并以PHB的方式儲存在體內，其所需的能量來(lái)自聚磷鏈的分化。隨后，廢水進(jìn)入缺氧區，反硝化細菌使用廢水中的有機基質(zhì)對隨回流混合液帶入的NO3- 進(jìn)行反硝化。廢水進(jìn)入好氧池時(shí)，廢水中有機物的濃度較低，聚磷菌首要是經(jīng)過(guò)分化體內的PHB而獲得能量，供細菌增殖，一起將周?chē)h(huán)境中的溶解性磷吸收到體內，并以聚磷鏈的方式儲存起來(lái)，隨后以剩下污泥的方式排出體系。體系中好氧區的有機物濃度較低，正有利于該區中自養硝化菌的成長(cháng)。<br /> 　　厭氧、缺氧、好氧三種不同的環(huán)境條件和不同品種的微生物菌群的有機配合，能一起具有去除有機物、脫氮除磷的功用;工藝簡(jiǎn)單，水力停留時(shí)刻較短;SVI一般小于100，不會(huì )發(fā)生污泥脹大;污泥中磷含量高，一般為2.5%以上;厭氧-缺氧池只需輕緩拌和，使之混合，而以不增加溶解氧為度;沉積池要防止發(fā)生厭氧-缺氧狀況，以防止聚磷菌釋放磷而下降出水水質(zhì)和反硝化發(fā)生N2而攪擾沉積;脫氮作用受混合液回流比大小的影響，除磷作用則受回流污泥中挾帶DO和硝酸態(tài)氧的影響，因而脫氮除磷作用不可能進(jìn)步。<br /> 文章源自：廣東環(huán)保工程公司 <a href="../" target="_blank">http://m.wxbaozhenjx.com/</a><br /></div> <div id="qeom46c" class="flickr"></div> <div class="sia46ig" id="pageview" class="clear"> <ul> <li><a href="content.asp?id=947&tp=Free001" title="Previous">上一條：使用廢氣處理設備需要注意什么</a></li> <li><a href="content.asp?id=945&tp=Free001" 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