Different colors of PAC can be used in different industries. Different colors of PAC can be used in different industries. In addition to aluminum and iron, PACs contain other metals such as calcium , Magnesium, etc. These so-called impurity metal ions are brought by impure raw materials. After experimental studies, it is found that such metal ions can improve the flocculation result of the main coagulant. For some industrial wastewater , The results show that, as some useful metal ions can carry their own insoluble sediment, promote the product flocculation sedimentation purposes. Polyaluminum chloride by the frame filter press can continue to filter solid dispersion of solid insoluble particles, does not affect the use of the solution, with a frame filter press can maintain degreasing liquid and phosphating solution in the low concentration of particles, the extension solution Extend the life of the spray system cleaning cycle, frame filter features the filter can continue cleaning solution, the output of non-aqueous waste, degreasing tank and the phosphate tank can not long down slot, reducing the depletion of the solution. Some customers ask me why polyaluminium chlorides have different colors? Now I will give you a description of the color of PAC, from the visual point of view Poly aluminum chloride there are several colors: 1, milk white, alumina content 31, the production process are basically spray-drying type, Important for the food industry, but also as an additive. 2, golden yellow, alumina content of 30, the same golden yellow and white, the production process is spray-drying type, such color is mainly used in tap water purification, drinking water purification. 3, brown, khaki, alumina content of about 24, these two are industrial-grade, mostly roller-based production process, the important role of the factory for circulating water flocculation sedimentation.