沉淀剂

Surface modified nano-sized mgnesium hydroxide was prepared by direct precipitation method with magnesium nitrate hexahydrate and sodium hydroxide as raw materials,and sodium fatty alcohol polyoxyethylene ether carboxylate as modifying agent.The optimum dosage of modifying agent was 0.2% of the mass of magnesium hydroxide,which was confirmed by sediment volume experiment.Modified and unmodified samples were characterized by fourier transform infrared spectroscopy,X-ray diffraction,transmission electron microscope,and tap density test.

以六水硝酸镁、氢氧化钠为原料，脂肪醇聚氧乙烯醚羧酸钠为改性剂，采用直接沉淀法一步合成改性纳米氢氧化镁，用沉降体积实验确定改性剂的最佳用量为氢氧化镁质量的0.2%，通过红外光谱、X射线衍射、透射电镜、表观密度对改性前后的样品进行表征。

Management of the turbidness in yellow wine are as follows: firstly, we should produce quality wine and prolong the fermentation period so that the microbes could be dissolved completely; the optimal storage period is 2～3 year for natural sedimentation; remove the turbidness; the best wine－boiling temperature is 80～85℃; the production facilities should be stainless to avoid the turbidness caused by metal ions; furthermore, we could remove the turbidness by the methods of refrigeration and addition of clarificant etc.

解决黄酒浑浊问题首先要酿好酒，延长发酵期，分解微生物完全彻底；存贮期以2～3年为好，起自然沉淀作用；割除酒脚；煮酒温度掌握在80～85℃；黄酒生产设备应采用不锈钢，避免金属离子产生沉淀；此外，可通过冷冻处理、添加澄清剂等方法除去浑浊沉淀物。

RESULTS:In the Chenxiang Lubailu table,the identification of bismuthic salt positive result with dilute nitric acid instead of hydrochloric acid and the white precepitation formed in identification of magnesian was bismuth hydroxide sediments,it was easy and accurate to identify bismuthic salt by adding ascorbic acid.

结果：该片中的铋盐碘化钾鉴别反应，用稀硝酸代替盐酸做溶剂，呈正反应；镁盐氯化铵-磷酸氢二钠鉴别反应，加氨试液后，析出的白色沉淀不是Mg2，而是Bi3，该沉淀在氯化铵试液中不溶，干扰镁盐鉴别；铋盐含量测定项，用加抗坏血酸掩蔽剂的方法，排除Fe3+的干扰，使终点颜色稳定，易于准确判断。

The mechanism of removing Zn(superscript 2+) has formed the chelating agent of hydroxamic acid group and Zn(superscript 2+), and the concentration of its maceration extract by water is 1/51 of the neutralization method's, so it is provided with better stability and environment safety.

捕集剂去除Zn(上标 2+)的反应机理为羟肟酸基团与Zn(上标 2+)形成了稳定的螯合物。摘集剂与Zn(上标 2+)反应形成的沉降物的浸出量仅为中和法沉淀的1/51，具有较高的稳定性和环境安全性。

The regulating reservoir water leakage enters the oxygen unit, through the biological degeneration function, enable the organic pollutant to obtain the thorough degeneration, the good oxygen unit enters the water to enter the precipitation unit, the precipitation unit water leakage flows automatically enters the middle basin; In the middle basin by the pump promotion to the micro flocculation unit, in the water before the residual soluble organic matter and the filtration throws the coagulant response production suspended solid which adds through the filtration pot filtration, the micro flocculation filtration water leakage enters the disinfection area, achieves the sterilization goal in the disinfection area using the chlorine dioxide strong oxidability.

调节池出水进入好氧单元，通过生物的降解作用，使有机污染物得到彻底的降解，好氧单元进水进入沉淀单元，沉淀单元出水自流进入中间水池；在中间水池由泵提升至微絮凝单元，水中残留溶解性有机物与过滤前投加的混凝剂反应生成悬浮固体通过过滤罐滤除，微絮凝过滤出水进入消毒区，在消毒区内利用二氧化氯的强氧化性达到杀菌目的。

The mian works are as follows:(1)By coprecipitation technique and coprecipitation- gel technique the nano zirconia powder was produced, factors affecting the properties of nano zirconia powder such as pH and the content of stabilizator are analyzed;(2)By the new pressless sintering process, the nano zirconia ceramic was produced, factors which can affecting the properties of nano zirconia sinter body such as moulding press and the sinter temperature are analyzed;(3)By the microtherm pressless sintering process, the nano copper added functional zirconia ceramic composite was produced, microscopic dimensionality and electric properties of such sinter body and the factors affecting such sinter body are analyzed;(4)By the self-invented "external albumen coating" technique the zirconia powder was successfully coated by carbon in the corresponding sinter body, which can help solve the traditional aggregation problem to some degree;(5)Based on analyze the characteristics in the nano powder sinter process, the "three-ball sinter model" was proposed, for the relationship between the relative density and porosity of sinter body, by mathematical fitting, such model was successfully verified.

本研究比较系统地研究了纳米氧化锆陶瓷的合成与成型机理，特别是讨论了纳米氧化锆陶瓷的稳定性，为防止纳米颗粒在外场作用下的团聚和长大提供了理论基础和实验数据，具体工作有以下几方面：(1)采用共沉淀法和共沉淀-凝胶法制备了纳米氧化锆粉体，并分析了pH值和稳定剂含量对粉体性能的影响；(2)采用新型无压烧结工艺制备了纳米氧化锆陶瓷，并分析了成型压力和烧结温度对烧结体性能的影响；(3)采用低温无压烧结工艺制备出添加纳米铜的功能性纳米氧化锆复合陶瓷，并分析了烧结体的微观尺度和电学性能的变化以及影响因素；(4)通过自创的&鸡蛋清外敷法&在真空镀膜台上对纳米氧化锆粉体进行包敷碳颗粒的表面处理，并采用真空烧结工艺制得相应烧结体，初步开始解决陶瓷烧结过程中团聚长大这一传统难题；(5)通过分析纳米颗粒在制备烧结体过程中的实际特点，提出了&三球烧结数学模型&，通过引入坯体相对密度和孔隙率的相对关系分析并通过自行编写的数学拟合软件，验证了这一数学模型。

A new process for synthesing barium titanyl oxalate tetrahydrate-spray reaction were proposed on the basis of applying the principle of homogeneous precipitation in the droplets mini-reactor.

首次在液滴&微反应器&中借用均相沉淀反应的原理，即通过水解剂水解出的草酸与液滴中的钡钛离子发生共沉淀反应生成草酸氧钛钡，进而煅烧制得钛酸钡粉体。

In SDS-FeCl_3 and SDS-PAC systems, no special chemical complexation reaction exists between the dominant species of metal ions and SDS, so no redissolufion phenomenon can be observed at high flocculant concentrations in these two systems. Secondly, when calcium or magnesium salt, which is very ubiquitous in natural water body, is added into surfactant micellar solution, surfactant can not be flocculated in micellar form.

但在SDS-FeCl_3及SDS-PAC体系中，金属离子主要存在物种与SDS间无特殊的化学络合作用存在，故这两个体系中在高混凝剂浓度下也观察不到沉淀重新溶解的现象。2向表面活性剂胶束溶液中加入天然水体中常见的钙盐或镁盐，表面活性剂不能以胶束形式被沉淀。

Compared with the precipitated Mnpromoted catalyst, the addition of partial precipitated and binder Mn can enhance the selectivity of heavy hydrocarbons and olefins and restrain the formation of oxygenates.

与共沉淀Mn相比，部分共沉淀和黏结剂Mn提高了重质烃和烯烃的选择性，同时抑制了有机含氧化合物的生成。

Calcium carbide residue and inferior iron sulphate were employed as defluorider to treat fluoride wastewater in power plant by chemical deposition, complexation and coagulation.

采用电石渣和硫酸亚铁作为除氟剂，通过化学沉淀、络合、絮凝反应处理热电厂含氟废水，在药剂投加量、投加顺序、静置沉淀时间等方面进行了深入研究。

What would he tell Judith and the children?

他将怎样告诉朱迪丝和孩子们呢？

I this is at that time, the opinion with peacockish true girl is full of in a heart.

这就是当时的我，一个心中布满虚荣的女孩子真实的想法。