硝化

According to the above study result, the diversity of microorganisms population in the SUFR system is complex and the bio-community formed in the SUFR system is stable. The close relations between abundance of bacteria and nutrients were found. The correlation between heterotrophic bacteria and COD was 0.949. The correlation between organic phosphate bacteria and TP was 0.815. The correlation between nitrosobacteria and NH3-N was 0.909. The correlation between disnitrifier bacteria and TN was 0.653. These inneglectable great factors effecting on phosphorus-uptake and phosphorus-release of phosphorus accumulating organisms are the influent COD、the concentration of DO、the sludge retention time、the temperature. The diversity of organic phosphate bacteria population in the SUFR reactor was complex and there is no phosphate bacteria taking the absolute superiority in quantity. The near-native pure culture method powerfully complement the traditional pure culture technique and enrich culture technique. The sludgy bioactivity is very good in whole SUFR reactor. By the quality of being biochemistry, the anaerobic phase is higher than anoxic phase and the anoxic phase is higher than aerobic phase of SUFR.

通过以上试验内容研究发现，SUFR 系统中的微型动物种群较多，微生物生态系统稳定；系统中微生物的数量与营养盐的含量密切相关，其中总异养菌与COD的相关系数r 为0.949，有机磷细菌与TP 的相关系数r 为0.815，亚硝化菌与NH4+-N的相关系数r 为0.909，反硝化菌的数量和TN 的相关系数r 为0.653；污水生物除磷工艺中进水COD 的浓度、DO 浓度、泥龄的长短、温度都是影响聚磷菌释磷及吸磷效果的不可忽视的因素；SUFR 系统中的磷细菌呈现种群多样化的趋势，没有占绝对优势数量的磷细菌；微孔滤膜近自然培养法是对传统纯培养技术和富集培养技术的有力补充；整个SUFR 反应器系统中污泥的生物活性很好，就可生化性来讲，厌氧反应器大于缺氧反应器大于好氧反应器；按照动力学方程式求出的细胞生长动力学特征值和SUFR 脱氮除磷系统工艺的实测值结果基本吻合。

The sludge age in the reactor is large, so that nitrobacteria and nitrosomonas live together. The nitrogen removal via nitrite was possible mainly because the activity of nitrobacteria was inhibited rather than rushed out in number.

反应器内的污泥龄较长，硝酸菌和亚硝酸菌长期共存，发生短程硝化反硝化主要因为硝酸菌的活性受到抑制，而不是数量上受到淘汰。

But the effluent ammonium in the anoxic reactor, where enough NO2 present were present, was equal to the blank system, and no ammonium was converted to such nitrogen compounds as NO-2 and N2 by Nitrosomonas eutropha using NO2 as electron acceptor, which maybe caused by lack of the function bacteria.

但在足够NO2存在并且缺氧的条件下，单级自养脱氮系统内的出水氨氮浓度与空白反应器相当，NH+4并没有被亚硝化单胞菌以NO2为电子受体氧化为NO-2和N2等化合物而得以去除，可能是因为系统内不存在该类型的亚硝化功能菌。

With retention time prolonged, the concentrations of TN, NH4(superscript +)-N and TP of domestic sewage were obviously reduced in all floating-bed systems, however the NO4(superscript +)-N concentrations were gradualjy accumulated due to the stronger nitrification than denitrification. The plants in floating-bed system increased significantly the N2O flux, which was 174.44μg/(m^2h), 82.19μg/(m^2h), 112. 49μg/(m^2h) and 44.81μg/(m^2h), respectively, for the Lolium mutliflorum, Oenanthe javanica, Vetiveria Zizanioides arid none-plant floating-bed systems.

净化周期内，浮床各系统的TN、NH4-N和TP浓度随着污水停留时间的延长直线下降，而NO3-N浓度却因系统内硝化强度大于反硝化强度而产生了累积；植物的存在明显的促进了浮床系统的N2O排放，浮床黑麦草、水芹、香根草和对照系统N2O的平均排放通量分别为174.44μg/， 82.19μg/， 112.49μg/和44.81μg。

By immobilization of denitrifying bacterium on different kinds of carbon fibers, effect of surface oxygenic functional groups of modified carbon fiber on denitrifying bacterium was investigated.

通过对比各种碳纤维表面含氧官能团对反硝化菌的固着化实验，研究了碳纤维表面含氧官能团对反硝化菌固着化的影响。

By means of contrasted immobilization of denitrifying bacterium on several kinds of carbon fibers, the effect of physical and chemical characteristics such as specific surface area, precursor and recycle, especially the surface oxygenic functional group on these carbon fibers was investigated.

通过对比反硝化菌在不同基体碳纤维表面的固着化及碳纤维表面含氧官能团对菌种的固着化实验，研究了碳纤维(基体、比表面积、循环利用性等)特性，尤其表面含氧官能团对反硝化菌固着化的影响。

The control standard of n itrogen and phos...

介绍了当前水体中磷、氮的控制标准和污水脱氮除磷(生化硝化、反硝化、生物除磷等)技术；同时适当选择了几例德国污水和地表水处理的典型工程实例。

According to the correlation of the inhibiting concentration to photobacterium and nitrifying bacterium by nitrification substrates and products, the change of luminous intensity of photobacterium can indicate the inhibition from nitrification substrates and products.

根据硝化基质和产物对发光细菌和硝化细菌抑制浓度的相关性，可用发光细菌发光强度的变化指示硝化基质和产物的抑制作用。

Studies on the trinitration of toluene showed that, the trinitration temperatures were high enough to intensify oxidation, and the two thermal hazard evaluation methods mentioned above couldn\'t evaluate the situation well. Results were found from the reaction calorimeter experiments that lower reaction temperature and decelerating dosing rate could prevent thermal accumulation and decrease thermal hazard efficiently.

在对三段硝化反应进行热危险性评估时发现，三段硝化反应的温度很高，氧化副反应随温度升高而加剧，风险矩阵法和失控情景分析方法难以准确评估该情况下的热失控危险，但实验结果表明降低反应温度，减缓加料速率能有效地防止热积累，减小反应过程中的热危险性。

Most removal of chemical and microbiological constituents occurs in the top 2 m of the vadose zone, biological breakdown of organics, nitrification, and denitrification occur in the unsaturated zone and in the aquifer.

大部分的用化学和微生物去除发生在最上层两米的渗流区域。生物学的有机分解，硝化和反硝化作用则发生在未饱和区域和含水层。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。