沉淀剂

Finally, the selected iron compounds were mixed with skim or whole milk powder directly and stored for a week in room temperature. The fortified milk powder was tested for color, flavor and precipitation after rehydrating by 45°C ion-free distilled water.

最后再将上述经筛选之铁剂以市售铁强化制品之剂量直接与全脂及脱脂乳粉混合并於室温下储存一周后，以45℃去离子水复水，观察其色泽、风味及沉淀与否等项目。

Finally, the selected iron compounds were mixed with skim or whole milk powder directly and stored for a week in room temperature. The fortified milk powder was tested for color, flavor and precipitation after rehydrating by 45°C ion-free distilled water.

最后再將上述经筛选之铁剂以市售铁强化製品之剂量直接与全脂及脱脂乳粉混合並於室温下储存一週后，以45℃去离子水復水，观察其色泽、风味及沉淀与否等项目。

The experiment results shown that: 1 the smaller the pH value, the smaller the use amount of alkaline metal and the alkali earth metal electrolyte demulsifier, when the pH value was 3, the waste fluid could be demulsified no any demulsifier and the use amount of the demulsifier did not increase remarkably along with the wiredrawing fluid concentration increased. 2 Using polymeric ferric sulfate as coagulant demulsifying, when the pH value was 8.4, the best adding amount was 40 mL per liter wastewater and the best precipitation time was 4 hours. Then the COD concentration was 480 mg/L, reaching the water quality requirements to enter the sewage treatment plant.

pH值越小，碱金属和碱土金属电解质破乳剂的用量越小，pH值为3时，无须加入任何破乳剂即可破乳；破乳剂用量并不随拉丝液浓度的增大而显著增加。2）用混凝剂聚合硫酸铁破乳，在pH值8.4时，最佳投加量为40 mL/L，最佳沉淀时间4 h，处理后上清液COD浓度为480 mg/L，能满足进入污水处理厂水质要求。

There is no solvent pollution of the solvent free AKD was. It is able to be used in cap paper of foodstuff. The AKD's production method is consecutive. Liquid AKD wax may solve the skidding of paper. The high speed of reaction with fibre AKD wax is used in the light-weight coated paper.

从1956年到1980年期间，AKD等中性施胶剂仅被用于需要重施胶的特殊纸张中，例如，液体包装纸、少量的需要碱性条件下生产的纸等[1]；由于其具有高不透明度、高白度、使用低成本的沉淀碳酸钙填料的优势，同时，许多高档纸开始从酸性造纸转向碱性造纸，自此，AKD进入了快速发展的时期。

Hydrogen peroxide as oxidizer and sodium carbonate as remover, arsenic, iron, nickel, calciumand lead are removed from copper-bearing mixture by neutralization and precipitation, then use the liquor thathave been filtrated react with the sodium carbonate to produce basic copper carbonae and make the quality of theproduct meet the export request.

采用氧化和中和沉淀方法，以H_2O_2作氧化剂、Na_2CO_3作脱杂剂脱除含铜混合液中的As、Fe、Ni、Ca、Pb等杂质，利用其与碳酸钠反应生产减式碳酸铜，并使产品质量达到出口要求。

The homogeneous nucleation discussion shows that PMSi possesses the excellent homogeneous nucleation performance. Many crystal nucleuses are formatted when PMSi is added into wastewater. It makes lots of floccules sedimentation to format and granule floccules to grow rapidly, which makes the floccules close-grained, big-bodies and fast-sedimentation-rate.

均相成核讨论表明，多核复合无机高分子絮凝剂PMSi具有更强的均相成核能力，大量晶核的形成诱导了絮凝体沉淀的形成，使得絮体颗粒迅速成长，其结果必然是絮体颗粒密实、体积大且沉降速度快。

The comprehensive electroplating wastewater from a large-scale electroplating industrial area in Shenzhen has been studied. Its treatment method has been investigated. It is ascertained that acidification-oxidation decomplexation and chemical precipitation of hydroxide and sulphide process are used. The best decomplexation agent chosen is bleaching liquid NaClO. The operational parameters are as follows: dosage of bleaching liquid 1.2 mL/L wastewater, reaction pH 2.3, and reaction time 2 h. Under these conditions, the requirements of the discharge standard of electroplating wastewater can be met effectively by adjusting the pH and adding sodium sulphide, overcoming the deficiencies of traditional processes of electroplating wastewater treatment.

以深圳某大型电镀工业园产生的综合电镀废水为研究对象，对其处理方法进行了探索，确定了酸化-氧化破络反应及氢氧化物和硫化物共沉淀的处理方法；通过实验选择漂水为最佳破络剂，最佳破络操作参数为漂水用量1.2 mL/L，反应pH为2.3，反应时间2.0 h，在此基础上调节pH并加入硫化钠即可实现电镀废水的达标排放，克服了传统电镀废水处理工艺的不足。

The synthesis process of silica using waterglass and sulpHuric acid as materials was studied systematicly. The results show that reacting temperature, reacting time, sulphuric acid concentration, reactive stiring rate, modulus of waterglass,adding salting agent,alkali concentration,the total volume of acid and alkali added , different methods of adding materials may have influence on the specific surface area or dibutylphthalate absorption number of silica in different degree.

本文系统地研究了以水玻璃溶液和硫酸为原料合成沉淀法白炭黑的工艺，研究发现：反应温度、反应时间、硫酸浓度、反应搅拌速度、水玻璃模数、添加盐析剂、底碱浓度、酸碱加入的总量、加料方式对白炭黑的比表面积或DBP吸收值有不同程度的影响。

It was suggested that the raw waste liquid A was conditioned with hydrogen chloride to pH 4, then dosage of ferric chloride as 1200 mg/L for the rapid mixing 1 minute and slow mixing for 30 minutes, then after further settled in the clarifier for at least 1 ~ 2 hours, the effluent was treated by the oxidation with chloric acid for no more than 10 minuts in the dosage of 50 g/L or the correspond ORP value of 334 mV.

处理废液A在实厂操作流程中建议最先以降低pH值至4，在利用1，200mg/L氯化铁做为混凝剂，经由1分钟快混(100rpm)及30分钟慢混(10rpm)后，藉由混凝沉淀去除废液中之胶体，再使用50g/L氯酸钠作为氧化剂，反应时间为5分钟，氧化残余之COD，再利用ORP值为是否达334mV，藉以判断COD是否达终点。

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。