Why are there such big color differences between PACs?
Differences in raw materials.
1. White PAC is drinking water grade, raw materials: aluminum hydroxide + food grade hydrochloric acid.
White PAC is professionally used in food, drinking water, urban water supply, precision manufacturing water purification, paper industry, medicine, sugar liquid refining, cosmetic additives, daily chemical industry, etc. It has a very wide range of applications, with very high purity and high price.
2. Light yellow PAC is drinking water grade, raw materials: aluminum hydroxide + calcium aluminate powder + food grade hydrochloric acid.
The mid-to-high series products, second only to white polyaluminum chloride, are mainly used for drinking water treatment, and the content restrictions on heavy metals are relatively strict. Applicable to all major water plants.
3. Industrial grade yellow PAC, raw materials: bauxite + calcium powder + industrial grade hydrochloric acid
It is currently the most widely used polyaluminum chloride on the market. It is an efficient flocculant used for sewage treatment and has good flocculation effect. Therefore, it is the best choice for industrial water supply, industrial wastewater, industrial water circulation and urban sewage treatment.
