What is the difference between compound alkali and lime

Time：

2021-09-15

Complex alkali is a compound chemical agent which is used to replace caustic soda and lime in sewage treatment. Because its appearance and lime are white powder, to calcium oxide as the main substance, with strong alkaline and calcium oxide characteristics. From the appearance and appearance, many people mistake it for lime, in fact, it is not. Here I will take you to see the differences between complex alkali and lime.

1. Compound alkali is a compound mixture of calcium oxide, diatomite and active white mud as the main raw materials. In addition to calcium hydroxide, the products formed after hydrolysis also contain diatomite, active white mud and its mixed products, which have compressibility resistance and stronger adsorption compared with lime.

2. The content of the active ingredient of this product is much higher than that of lime. Under the condition of the same adjustment of alkali, the amount of sludge produced is much less. The amount of agent used and the cost of subsequent sludge treatment can be greatly reduced.

3. Compound alkali is mainly used in sewage treatment, which is superior to lime in removing phosphorus, breaking complexions, removing heavy metals, demulsification, removing SS in water and neutralizing and regulating acid and base. The sludge produced is small, which has little or no influence on subsequent water treatment.

4. Compared with lime, it has the characteristics of low price and wide application industry. Whether it is construction industry or flue gas desulfurization and as a raw material production and processing, soil acid and base regulation are a large number of applications of lime rather than complex alkali, although complex alkali in most cases has the same or higher function, but for material quality, impurities requirements are not high and need to use a large number of these industries, lime in price more advantages.