長春硝化細(xì)菌廠家誠信經(jīng)營普羅生物技術(shù)供應(yīng)-b2b網(wǎng)站_b2b電子商務(wù)平臺【買產(chǎn)品】-上?？谄蚴称酚邢薰?/title><meta name="description" content="納氏試劑光度法概述：1，長春硝化細(xì)菌廠家.方法原理碘化汞和碘化鉀的堿性溶液與氨反應(yīng)生成淡紅棕色膠態(tài)化合物，此顏色在較寬的波長范圍內(nèi)具強(qiáng)烈吸收。通常測量用波長在410—425nm范圍。2.干擾及消除脂肪胺、芳香胺、醛類，長春硝化細(xì)菌廠家、**"><meta name="keywords" content="長春硝化細(xì)菌廠家,氨氮"><link rel="canonical" href="http://www.cdcfah.com/"/><meta name="applicable-device" content="pc"><link rel="shortcut icon" href="/static/new_net_01/images/favicon.ico"><link rel="stylesheet" href="/static/new_net_01/css/slick.css" /><link rel="stylesheet" href="/static/new_net_01/css/addnew.css"><link rel="stylesheet" href="/static/new_net_01/css/sidenav.css"><link rel="stylesheet" href="/static/new_net_01/css/style.css" /><link rel="stylesheet" href="/static/new_net_01/css/tab.css"><link rel="stylesheet" href="/static/new_net_01/css/404.css"> <meta name="baidu-site-verification" content="OBVzrC9aaQ" /> <meta http-equiv="Cache-Control" content="no-transform" 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href="http://www.cdcfah.com/cp/third-snhbjcyqfw_aqjcyws/">氨氣檢測儀</a>?長春硝化細(xì)菌廠家誠信經(jīng)營普羅生物技術(shù)供應(yīng)</p><div id="oyf8my2" class="leftbox clearfix"><h1>長春硝化細(xì)菌廠家誠信經(jīng)營普羅生物技術(shù)供應(yīng)</h1><div id="8q8ht7g" class="proBig"><div id="et2fhoq" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/shplsw/637379562513701172/710473.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="odv7rta" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/shplsw/637379562513701172/710473.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="d8celnp" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價格要求：</span>面議</p><p><span>所在地：</span>上海市</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>長春硝化細(xì)菌廠家,氨氮</p><p><span>***更新：</span>2020-12-31 05:13:16</p><p><span id="click" >瀏覽次數(shù)：1次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="aum8zwi" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">普羅生物技術(shù)（上海）有限公司</a></p><p><span>聯(lián)系人：</span>楊明浩</p><p><span>郵箱: </span>yminghao@bhnchina.com</p><p><span>電話: </span>18221034638</p><p><span>傳真: </span>021_68917228</p><p><span>網(wǎng)址: </span>https://www.probiotic.com.cn</p><p><span>手機(jī): </span>021-68917101</p><p><span>地址: </span>上海市浦東新區(qū)金港路211號</p><p>[當(dāng)前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="apm4n2j" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="ncjdubd" class="box"><p><p style="text-indent:25px">納氏試劑光度法概述： 1，長春硝化細(xì)菌廠家.方法原理碘化汞和碘化鉀的堿性溶液與氨反應(yīng)生成淡紅棕色膠態(tài)化合物，此顏色在較寬的波長范圍內(nèi)具強(qiáng)烈吸收。通常測量用波長在410—425nm范圍。 2.干擾及消除脂肪胺、芳香胺、醛類，長春硝化細(xì)菌廠家、**、醇類和有機(jī)氯胺類等有機(jī)化合物，以及鐵、錳、鎂、硫等無機(jī)離子，因產(chǎn)生異色或渾濁而引起干擾，水中顏色和渾濁亦影響比色。為此，須經(jīng)絮凝沉淀過濾或蒸餾預(yù)處理，易揮發(fā)的還原性干擾物質(zhì)，還可在酸性條件下加熱除去。對金屬離子的干擾，可加入適量的掩蔽劑加以消除。 3.方法適用范圍本法較低檢出濃度為0.025mol/L（光度法），測定上限為2mg/L。采用目視比色法，較低檢出濃度為0.02mg/L。水樣作適當(dāng)?shù)念A(yù)處理后，本法可適用于地表水、地下水、工業(yè)廢水和生活污水，長春硝化細(xì)菌廠家。氨氮主要以氨離子或游離氨等形式存在，其能夠和納氏試劑發(fā)生反應(yīng)。長春硝化細(xì)菌廠家</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="長春硝化細(xì)菌廠家,氨氮" src="https://tyunfile.71360.com/UploadFile/shplsw/637379562513701172/710473.png"></div><p style="text-indent:25px">對人體健康的影響: 水中的氨氮可以在一定條件下轉(zhuǎn)化成亞硝酸鹽，如果長期飲用，水中的亞硝酸鹽將和蛋白質(zhì)結(jié)合形成亞硝胺，這是一種強(qiáng)致病物質(zhì)，對人體健康極為不利。對生態(tài)環(huán)境的影響: 氨氮對水生物起危害作用的主要是游離氨，其毒性比銨鹽大幾十倍，并隨堿性的增強(qiáng)而增大。氨氮毒性與池水的pH值及水溫有密切關(guān)系，一般情況，pH值及水溫愈高，毒性愈強(qiáng)，對魚的危害類似于亞硝酸鹽。氨氮對水生物的危害有急性和慢性之分。慢性氨氮中毒危害為：攝食降低，生長減慢，組織損傷，降低氧在組織間的輸送。魚類對水中氨氮比較敏感，當(dāng)氨氮含量高時會導(dǎo)致魚類死亡。急性氨氮中毒危害為：水生物表現(xiàn)亢奮、在水中喪失平衡、抽搐，嚴(yán)重者甚至死亡。長春硝化細(xì)菌廠家實(shí)現(xiàn)短程硝化反硝化生物脫氮技術(shù)的關(guān)鍵就是將硝化控制在亞硝酸階段，阻止亞硝酸鹽的進(jìn)一步氧化。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="長春硝化細(xì)菌廠家,氨氮" src="https://tyunfile.71360.com/UploadFile/shplsw/637379562400625000/5430084.png"></div><p style="text-indent:25px">氨氮的處理: 物化法 1. 吹脫法在堿性條件下，利用氨氮的氣相濃度和液相濃度之間的氣液平衡關(guān)系進(jìn)行分離的一種方法，一般認(rèn)為吹脫與溫度、PH、氣液比有關(guān)。 2. 沸石脫氨法利用沸石中的陽離子與廢水中的NH4+進(jìn)行交換以達(dá)到脫氮的目的。應(yīng)用沸石脫氨法必須考慮沸石的再生問題，通常有再生液法和焚燒法。采用焚燒法時，產(chǎn)生的氨氣必須進(jìn)行處理。 3.膜分離技術(shù) 利用膜的選擇透過性進(jìn)行氨氮脫除的一種方法。這種方法操作方便，氨氮回收率高，無二次污染。例如：氣水分離膜脫除氨氮。氨氮在水中存在著離解平衡，隨著PH升高，氨在水中NH3形態(tài)比例升高，在一定溫度和壓力下，NH3的氣態(tài)和液態(tài)兩項(xiàng)達(dá)到平衡。根據(jù)化學(xué)平衡移動的原理即呂．查德里（A.L.LE Chatelier）原理。在自然界中一切平衡都是相對的和暫時的?；瘜W(xué)平衡只是在一定條件下才能保持―假若改變平衡系統(tǒng)的條件之一，如濃度、壓力或溫度，平衡就向能減弱這個改變的方向移動。</p><p style="text-indent:25px">折點(diǎn)氯化法: 折點(diǎn)氯化法是將氯氣通入廢水中達(dá)到某一點(diǎn)，在該點(diǎn)時水中游離氯含量較低，而氨的濃度降為零。當(dāng)氯氣通入量超過該點(diǎn)時，水中的游離氯就會增多。因此，該點(diǎn)稱為折點(diǎn)。該狀態(tài)下的氯化稱為折點(diǎn)氯化。折點(diǎn)氯化法除氨的機(jī)理為氯氣與氨反應(yīng)生成無害的氮?dú)?，N2 逸入大氣，使反應(yīng)源源不斷向右進(jìn)行。加氯比例:M（Cl2）與M（NH3-N）之比為8 :l - 10 :1 。當(dāng)氨氮濃度小于20 mg/ L 時，脫氮率大于90 % ，pH 影響較大，pH 高時產(chǎn)生NO3- ，低時產(chǎn)生NCl3 ，將消耗氯，通常控制pH在6-8。此法用于廢水的深度處理，脫氮率高、設(shè)備投資少、反應(yīng)迅速完全，并有消毒作用。但液氯安全使用和貯存要求高，對pH要求也很高，產(chǎn)生的水需加堿中和，因此處理成本高。另外副產(chǎn)物氯胺和氯代有機(jī)物會造成二次污染。吹脫、汽提法主要用于脫除水中溶解氣體和某些揮發(fā)性物質(zhì)。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="長春硝化細(xì)菌廠家,氨氮" src="https://tyunfile.71360.com/UploadFile/shplsw/637379562560849610/7933327.png"></div><p style="text-indent:25px">氨氮超標(biāo)的處理方法：改善污泥負(fù)荷與污泥齡污水中的生物硝化反應(yīng)屬低負(fù)荷工藝，負(fù)荷越低，硝化進(jìn)行得越充分，NH3-N向NO3--N轉(zhuǎn)化的效率就越高。F/M一般在0.05～0.15kgBOD/kgMLVSS·d。負(fù)荷越低，硝化進(jìn)行得越充分，NH3-N向NO3--N轉(zhuǎn)化的效率就越高。與低負(fù)荷相對應(yīng)，生物硝化系統(tǒng)的SRT一般較長，因?yàn)橄趸?xì)菌世代周期較長，若生物系統(tǒng)的污泥停留時間過短，即SRT過短，污泥濃度較低時，硝化細(xì)菌就培養(yǎng)不起來，也就得不到硝化效果。SRT控制在多少，取決于溫度等因素。對于以脫氮為主要目的生物系統(tǒng)，通常SRT可取11～23d。氨氮是水體中的主要耗氧污染物，對魚類及某些水生生物有毒害。長春硝化細(xì)菌廠家</p><p style="text-indent:25px">氨氮是水體中的主要耗氧污染物。長春硝化細(xì)菌廠家</p><p style="text-indent:25px">氨氮污水的處理技術(shù)都有各自的優(yōu)勢與不足:生物法處理氨氮污水較穩(wěn)定，但一般要求氨氮濃度在400 mg/L以下，總氮去除率可達(dá)70% ～95%，是目前國內(nèi)外運(yùn)用好多的一種方法。生物脫氮新工藝處理高濃度氨氮廢水效率比較高，目前實(shí)際投入運(yùn)行的有短程硝化反硝化工藝和厭氧氨氧化工藝，但它們的工藝條件要求嚴(yán)格，特別是對溶解氧的要求更為嚴(yán)格，在實(shí)際應(yīng)用中很難控制;其他新型脫氮技術(shù)也只是在實(shí)驗(yàn)研究階段。氨吹脫法，工藝成熟，吹脫效率高，運(yùn)行穩(wěn)定，但動力消耗大，塔壁易結(jié)垢，在寒冷季節(jié)效率會降低;化學(xué)沉淀法工藝簡單，效率高，但投加藥劑量大，必須找一種高效價廉無污染的藥劑或助凝劑;人們已經(jīng)對膜吸收法中膜的滲漏問題進(jìn)行了研究，并發(fā)現(xiàn)較高的氨氮和鹽量能有效壓抑水的滲透蒸餾通量;對于成分比較簡單的氨氮廢水處理，在物理化學(xué)法中，吹脫法和膜吸收法是比較經(jīng)濟(jì)有效的選擇;如果污水成分相對復(fù)雜，比如油性污染物含量較高，則需先進(jìn)氣浮等預(yù)處理。對于高濃度氨氮廢水，為保證出水達(dá)標(biāo)排放，建議采用物化法和生物法聯(lián)合工藝取代單一工藝以徹底去除廢水中氨氮。長春硝化細(xì)菌廠家</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2639066.html</p></div></div></div></div></div><div id="8mb3bqc" class="page-right twoColRt"><div id="vfnc8hm" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="3p2gizg" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img src="http://tyunfile.71360.com/UpLoadFile/2019/11/1/14/637082168864691056_lgpj_5374157.jpg" 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