提到片碱，大家可能不太清楚是什么，但是提到烧碱，大家就明白了。片碱就是片状的固态氢氧化钠；同样，液碱也就是液态氢氧化钠。氢氧化钠是一种化工原料，在废水处理、碱性氧化、除锈等各种方面都有良好的应用。

When it comes to caustic soda, you may not be quite sure what it is, but when it comes to caustic soda, you understand. The flake alkali is the flake solid sodium hydroxide; Similarly, liquid caustic soda is also liquid sodium hydroxide. Sodium hydroxide is a chemical raw material, which has good applications in wastewater treatment, alkaline oxidation, rust removal and other aspects.

片碱、粒碱、固碱化学名“氢氧化钠”，俗称烧碱、火碱、苛性钠。为无机化合物，化学式NaOH，具有强腐蚀性，易溶于水，其水溶液呈强碱性，能使酚酞变红。氢氧化钠是一种常用的碱，是化学实验室的必备药品之一。它的溶液可以用作洗涤液。

The chemical name of flake caustic soda, granular caustic soda and solid caustic soda is "sodium hydroxide", commonly known as caustic soda, caustic soda and caustic soda. It is a Inorganic compound with chemical formula NaOH, which is highly corrosive and easily soluble in water. Its aqueous solution is strongly alkaline and can make phenolphthalein red. Sodium hydroxide is a commonly used alkali and one of the essential drugs in chemical laboratories. Its solution can be used as a washing solution.

片碱和液碱的主要成分都是氢氧化钠，区别在于一个是固态，一个是液态。液碱和片碱本身对混凝反应没有影响，混凝反应主要控制：PH值、温度、药剂扩散和保护絮体增大的水利条件，无机、有机混凝剂的选择，投加量等，所以片碱和液碱的主要作用是调节PH。

The main component of flake caustic soda and liquid caustic soda is sodium hydroxide. The difference is that one is solid and the other is liquid. Liquid alkali and flake alkali themselves have no effect on the coagulation reaction. The coagulation reaction mainly controls: pH value, temperature, chemical diffusion, hydraulic conditions for protecting the increase of flocs, selection of inorganic and organic coagulants, dosage, etc. Therefore, the main function of flake alkali and liquid alkali is to regulate the PH.

相同点

Similarities

1、生产所用原材料相同。

1. The raw materials used for production are the same.

2、分子式相同，都是NaOH，是同一种物质。

2. The Molecular formula is the same, both are NaOH, which is the same substance.

3、都具有强烈的腐蚀性，能迅速灼伤皮肤，遇水溶解。

3. Both have strong corrosiveness and can quickly burn the skin, dissolving in water.

不同点

Differences

1．生产过程中所用的设备不同，片碱是由片碱机刮片后，经过冷却装入袋中；粒碱是由喷浆造粒设备生产；固碱是直接利用输送管道输送到固碱桶中。

1. The equipment used in the production process is different. The flake alkali is scraped by a flake alkali machine and cooled into a bag; Granular alkali is produced by spray granulation equipment; Solid alkali is directly transported to a solid alkali drum through a transportation pipeline.

2．产品外部形态不同，片碱是片状固体，粒碱是珠状圆形固体，固碱是整体一块。

2. The external form of the product is different, with flake alkali being a flake solid, granular alkali being a bead like circular solid, and solid alkali being a whole piece.

3．用途不同：片碱多用于化工、印染、污水处理、、农药、电镀等；粒碱主要用于医药、化妆品等化工行业，实验室中用粒碱要比片碱方便的多。固碱多用于医药化工。

3. Different uses: flake alkali is commonly used in chemical engineering, printing and dyeing, sewage treatment, disinfection, pesticides, electroplating, etc; Granular alkali is mainly used in chemical industries such as pharmaceuticals and cosmetics, and it is much more convenient to use granular alkali in the laboratory than flake alkali. Solid alkali is often used in pharmaceutical and chemical industries.

具体选用哪个是根据水厂的使用需求来决定的，液碱反应速度比较快，投加简单，不过要控制好溶度，否则低温下容易结晶。片碱虽溶解麻烦，但存储或搬运比较方便。

The specific choice depends on the usage needs of the water plant. The liquid alkali reaction speed is relatively fast and the addition is simple. However, it is necessary to control the solubility, otherwise it is easy to crystallize at low temperatures. Although the dissolution of caustic soda is troublesome, it is more convenient to store or transport.

需要注意的一点是，片碱和液碱都是在废水处理中经常使用的，但是它们不能混合放置，需要分开。更多相关事项就来我们网站http://www.jinhao360.com咨询吧！

It should be noted that both caustic soda and liquid caustic soda are commonly used in wastewater treatment, but they cannot be mixed and placed separately. For more related matters, come to our website http://www.jinhao360.com Consult!