Do the front filter and pp cotton need to be used together? At present, the ultra-filtration water purifier on the market is basically Grade 4, pp cotton-front activated carbon-ultra-filtration membrane-rear activated carbon. Generally speaking, the first two grades are pre-treated. First, the particles with larger diameter are filtered out, and then further processed to the UF Membrane. Finally, the rear activated carbon is used to improve the taste. The 4-stage filtration can extend the life of the water purifier very well. regardless of the water quality, it is recommended to add a pre-filter before the UF membrane.
What is the difference between drum drying aluminum and spray drying aluminum? Polyaluminum chloride is what we often call a water purifier,Also known as polyaluminum chloride,Aluminum chloride or poly aluminum,English abbreviation PAC,And basic Poly aluminum chloride,Polymerization of aluminum chloride iron is an inorganic water purification agent.It's a multi-group,Cation-type inorganic polymer flocculation with multi-core complex,The appearance of solid products is yellow powder,Its chemical formula is [Al 2 (OH) nCL6-N] m.(In the formula,,And easily soluble in water,There is a strong adsorption of the bridge,Accompanied by electrochemistry during hydrolysis,Cohesion,Physical changes such as adsorption and precipitation,[Al 2 (OH) 3 (OH) 3] is finally generated to achieve the purpose of purification.(1) naturally precipitated polyaluminum chloride--As the name implies, natural precipitation is adopted in the primary and secondary sedim