In this paper, the importance of denitrification in the biogeochemical cycle of nitrogen in estuaries is summarized, It introduces methods of denitrification determination, as well as their advantages and disadvantages.

本文綜述了河口區(qū)域反硝化作用在N元素生物地球化學循環(huán)過程中的重要作用黄色网子在线观看免费，概述了不同測定反硝化速率的方法综合激情区小说区图片区，并提出了各種方法的優(yōu)缺點黄软件在线观看。總結(jié)了反硝化作用的影響因素：O2濃度欧美性爱欧美性爱欧美性爱，NO3美女裸体让男人玩动态图，有機質(zhì)，溫度欧美片在线观看，生物等激情小说狠狠爱。

The communities of Denitrifying bacteria, and some key enzymes of denitrification were also introduced.

從反硝化的角度出發(fā)四川老熟女下边又黑又肥，論述了反硝化細菌的類群91黄版短视频在线看、反硝化作用的機理、反硝化細菌細胞中參與反硝化過程的關(guān)鍵酶深夜久久久。

According to the above study results, especially the steady operation of two-sludge system（2A/O+N 2SBR）, it can be proved that denitrification and excess phosphorus uptake are relatively independent and intersectant biological processes. The overlap is that denitrifying phosphorus removing bacteriawhich possesses the two bacterial metabolisms, could utilize nitrate as an electron acceptor for phosphorus uptake. The two-sludge system can not only combined biological phosphorus removal and denitrification processes to form a process in practical wastwater treatment , but also solved the main difficulties of current single-sludge systems:①the sludge age competition between phosphorus removing bacteria and nitrifier;② the substrate competition between denitrification and dephosphatation.

以上的研究結(jié)果精品九久，尤其是時間序列的雙泥生物反硝化除磷脫氮系統(tǒng)工藝（2A/O+N 2SBR法）的穩(wěn)定運行，不僅證明了生物脫氮與生物除磷是兩個既相對獨立又相互交叉的生理過程亚洲精品笫一页国产精品，其交叉點是同時擁有硝酸鹽還原性和超量吸磷這兩種生化特性的細菌進行的反硝化吸磷脫氮生化反應91亚洲高清无码视频，而且雙泥系統(tǒng)工藝克服了常規(guī)單泥生物脫氮除磷工藝的兩大問題（①聚磷菌和硝化菌的SRT相互干擾；②反硝化與生物除磷競爭VFA）欧美自拍日韩免费观看，同時保證了脫氮和除磷效果精品不卡一区中文字幕，排水指標達到污水綜合排水標準（GB8978-1996）的一級標準，具有實際工程使用價值欧美牲爱视频。

After comparison of various process, a optimum process—ANIS process can be drawn; A autotrophic denitrifying process is successfully started up and stable operated; ANIS nitrous nitrifying process and autotrophic denitrifying process are joining-up in series to operate, and sound nitrogen removal effect can be achieved.

本論文廣泛研究了各類C/N均小于1无码中文字幕一级毛片、甚至低至0.5以下的低、中欧美性v、高氨氮濃度廢水進行亞硝化處理的效果欧美性生活黄色网站，綜合比較了各種不同的處理工藝，得出了最佳工藝——ANIS工藝和運行條件；成功啟動并穩(wěn)定運行了自養(yǎng)反亞硝化系統(tǒng)在线看黄片日韩黄，并將ANIS亞硝化工藝和自養(yǎng)反亞硝化工藝串連運行国产乱子伦真实视频在线观看，取得了良好的脫氮效果。

A selective nitration of calix[4]arene at the upper rim in one pot process was described by monitoring the time dependence of the distribution of products by high-performance liquid chromatography.

通過高效液相色譜實時監(jiān)測杯[4]芳烴上沿選擇性硝化過程一级毛片视频免费高清，研究了反應中各種硝化產(chǎn)物的相對濃度隨時間的分布情況18岁黄直播件永久看的，得到了五種硝化產(chǎn)物在同一反應體系中的最佳獲取時間。

In order to solve the problem of producing large amounts of wastes and undesired o-nitrotoluene in synthesis of p-nitrotoluene with the mixed concentrated mineral acids,the catalytic activity of phosphotungstic acid for selective nitration of toluene was studied and the optimum conditions for preparing the catalyst were investigated.

為解決硝硫混酸對硝化甲苯過程中因甲苯的非選擇性硝化產(chǎn)生的o-MNT和大量廢酸對環(huán)境的危害特黄又大又粗又硬作爱大片，研究了磷鎢酸對甲苯硝化反應的催化活性亚洲一级片视频在线观看。

In this paper, the latest progress of the nitration of deactivated aromatic compounds is reviewed in the point of view of nitrating agents, including nitrate-sulfuric acid, nitrate ester, nitric acid and nitrogen oxides.

本文從硝化試劑角度綜述了近年來鈍化芳環(huán)的硝化反應的進展，包括硝酸鹽/硫酸色欲性爱欧美性爱、硝酸酯色a电影网、硝酸、氮氧化物等硝化方法亚洲男人的天堂在线网址。

The ring-open nitration of propylene oxide compounds was investigated using dinitrogen pentoxide as nitrating agent.

并以N2O5為硝化劑考察了環(huán)氧丙烷類化合物開環(huán)硝化過程在线播放va，探討了取代基的電子效應和立體效應對環(huán)氧丙烷類化合物開環(huán)硝化過程的影響規(guī)律。

The green synthesis of nitrate esters using dinitrogen pentoxide (N2O5) as nitrating agent was briefly summarized.

評述了N2O5為硝化劑制備硝酸酯類含能材料的綠色合成技術(shù)无码又爽又刺激免费视频，分析了N2O5-有機溶劑硝化高清无码在内射3D在线观看、N2O5-固體載體硝化和引入保護基硝化等三種體系工藝的過程和特點，展望了各硝化體系的發(fā)展前景久久精品国产精品久久人。

We studied the infection ofthe different reactant ratios to the degree of nitration when the polystyrere was nitrified. Thena series PS-NH_2 With different concentrations of amidocyanogen were gained by reducingPS-NO_2. At last the high active acryloylthiourea were grafted on the amidocyamogens.

在聚苯乙烯的硝化過程中日韩精品天天在线观看，研究了不同的反應物配比對硝化度的影響，并對不同硝化度的硝基聚苯乙烯進行還原反應永久黄网站色视频免费费，得到了胺基含量不同的系列胺基聚苯乙烯72式A片，最后利用聚苯乙烯上的胺基和高活性的丙烯酰基異硫氰酸酯進行加成91伊人久久大香线蕉，合成AGPS午夜无码一级成年大片在线69式。

cellulose acetate：醋酸纖維

膠片片基變化:1930年,醋酸纖維(cellulose acetate)代替了舊的硝化纖維(nitrocellulose)片基,因為后者極易燃燒超碰个人免费、易斷裂,而且?guī)啄旰髸兩? 到了20世紀70年代,人們又開始使用比較堅韌,且不易膨漲的聚酯膠片.

aerobic denitrification：好氧反硝化

然而近年來,國內(nèi)外的不少研討和報道已能充足證明,反硝化可產(chǎn)生在有氧條件下,即好氧反硝化(Aerobic denitrification)的存在[1~2]?. 而在許多實際運行中的好氧硝化池中也常常發(fā)明有30%的總氮喪失[3]. 作者在采取序批式反映器處置某化肥廠氨氮廢水的鉆研中也發(fā)現(xiàn)了類的現(xiàn)象.

nitrobacteria：硝化細菌

用PCR技術(shù)檢測生物硝化池污水中硝化細菌(Nitrobacteria)的研究從生物硝化池污水水樣中分離了硝化細菌DNA,以其為模板,針對其16SrRNA基因及23SrRNA基因而設計合成了兩對引物并分別進行了PCR擴增,擴增產(chǎn)物的2%瓊脂糖凝膠電泳結(jié)果顯示,

Alcaligenes denitrificans：反硝化產(chǎn)堿菌

本文報道了在稻田養(yǎng)殖環(huán)境下發(fā)生的一例河蟹顫抖病的診斷與治療的過程.結(jié)果表明,本例河蟹顫抖病是由蘇云金芽孢桿菌(Bacillus thuringiensis)和反硝化產(chǎn)堿菌(Alcaligenes denitrificans)混合感染引起;藥敏試驗結(jié)果顯示兩種細菌均對喹諾酮類艹插舒服爽轮流视频、氯霉素

anoxic：缺氧

為了保持較好的脫氮除磷效果,試驗中結(jié)合了A/O工藝,即缺氧 (Anoxic)一好氧 (Aerobic),使得構(gòu)筑物中有足夠數(shù)量的長污泥齡的硝化菌以完成生物硝化作用,A/O系統(tǒng)與膜生物反應器結(jié)合,有利于繁殖慢的細菌增加,且設備化、自動化程度高,

Nitrobacter：硝化菌

然而,將硝化階段控制在亞硝化階段的成功報道并不多見.這是因為,硝化菌(Nitrobacter)能夠迅速地將亞硝酸鹽轉(zhuǎn)化為硝酸鹽.SHARON工藝的成功在于:巧妙地應用了硝化菌(Nitrobacter)和亞硝化菌(Nitrosomonas)的不同生長速率,即在較高溫度下,

nitrated：硝化了的

nitratecooling 硝酸鹽冷卻 | nitrated 硝化了的 | nitratedalcohol 硝化酒精