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(xué)循環(huán)過程中的重要作用欧美变态视频，概述了不同測(cè)定反硝化速率的方法亚洲黄色视频网，并提出了各種方法的優(yōu)缺點(diǎn)com.一区二区久久特⊥救蘸谙撸總結(jié)了反硝化作用的影響因素：O2濃度，NO3污视频推荐视频平台免费观看视频，有機(jī)質(zhì)日本高清视频在线观看Aⅴ，溫度亚州+日韩+国产+无码，生物等国产精品爱V在线观看。

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

從反硝化的角度出發(fā)，論述了反硝化細(xì)菌的類群免费A片视频小草、反硝化作用的機(jī)理激情国产黄色视频、反硝化細(xì)菌細(xì)胞中參與反硝化過程的關(guān)鍵酶。

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)果久操依人，尤其是時(shí)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(yùn)行在线观看成人短视频网站，不僅證明了生物脫氮與生物除磷是兩個(gè)既相對(duì)獨(dú)立又相互交叉的生理過程，其交叉點(diǎn)是同時(shí)擁有硝酸鹽還原性和超量吸磷這兩種生化特性的細(xì)菌進(jìn)行的反硝化吸磷脫氮生化反應(yīng)农村一级无码，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相互干擾日韩3级电影网；②反硝化與生物除磷競(jìng)爭(zhēng)VFA）国产视频33区，同時(shí)保證了脫氮和除磷效果，排水指標(biāo)達(dá)到污水綜合排水標(biāo)準(zhǔn)（GB8978-1996）的一級(jí)標(biāo)準(zhǔn)打开免费黄色网站在线观看，具有實(shí)際工程使用價(jià)值欧美成αⅴ人在线视频。

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、甚至低至0.5以下的低日本人人干、中AV野狼、高氨氮濃度廢水進(jìn)行亞硝化處理的效果，綜合比較了各種不同的處理工藝黄色A片视频，得出了最佳工藝——ANIS工藝和運(yùn)行條件大黑吊性爱；成功啟動(dòng)并穩(wěn)定運(yùn)行了自養(yǎng)反亞硝化系統(tǒng)，并將ANIS亞硝化工藝和自養(yǎng)反亞硝化工藝串連運(yùn)行A片网站导航，取得了良好的脫氮效果av日韩免费网址。

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(shí)時(shí)監(jiān)測(cè)杯[4]芳烴上沿選擇性硝化過程，研究了反應(yīng)中各種硝化產(chǎn)物的相對(duì)濃度隨時(shí)間的分布情況全国精品第一区黄片，得到了五種硝化產(chǎn)物在同一反應(yīng)體系中的最佳獲取時(shí)間国产一级a片精品久久。

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(duì)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(duì)環(huán)境的危害，研究了磷鎢酸對(duì)甲苯硝化反應(yīng)的催化活性15级黄片电影。

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(yīng)的進(jìn)展欧美日韩另类自拍动漫，包括硝酸鹽/硫酸、硝酸酯老师洗澡让我吃奶羞羞漫画、硝酸色欲aⅤ、氮氧化物等硝化方法。

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)硝化過程欧美永久视频免费，探討了取代基的電子效應(yīng)和立體效應(yīng)對(duì)環(huán)氧丙烷類化合物開環(huán)硝化過程的影響規(guī)律www.玖玖爱免费视频。

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

評(píng)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)，分析了N2O5-有機(jī)溶劑硝化欧美性爱三、N2O5-固體載體硝化和引入保護(hù)基硝化等三種體系工藝的過程和特點(diǎn)china农村野外妇女BBw，展望了各硝化體系的發(fā)展前景。

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免费一级黄片视频，研究了不同的反應(yīng)物配比對(duì)硝化度的影響国产无套推油按摩女视频推油，并對(duì)不同硝化度的硝基聚苯乙烯進(jìn)行還原反應(yīng)，得到了胺基含量不同的系列胺基聚苯乙烯国产二区视频在线观看，最后利用聚苯乙烯上的胺基和高活性的丙烯踉谠谙呋粕悠担基異硫氰酸酯進(jìn)行加成，合成AGPS免费无码一级黄色视频。