The Higher The Alumina Content of PAC, The Better?
Polyaluminum chloride is the most commonly used water purifier. According to the content of aluminum oxide, it can generally be divided into several specifications: 30%, 28%, 26%, and 24%. Most people may think that aluminum oxide The higher the aluminum content, the better the effect. However, when high-content polyaluminum chloride is used to treat low-turbid sewage, the suspended solids do not settle after being put in.
The reason is not mainly because the content is too high, but because some of the sewage The water quality itself is too acidic. The higher the PAC content, the more acidic the product is and the inability to react effectively is one of the reasons. It may also be because the suspended solids in the water are too light, and high-content polyaluminum chloride cannot effectively react with it. It is also the main reason to drive its precipitation and decline.
Relatively speaking, the reaction between polyaluminium chloride and sewage or tap water relies on alumina. The content of alumina directly determines the effect of the reaction and the speed of flocculation.