The application of fillers in water treatment, how many types of fillers are there?

Fillers generally refer to materials that are filled in other objects. In chemical engineering, packing refers to inert solid materials installed in packed towers, such as Pall rings and Raschig rings, etc., whose function is to increase the gas-liquid contact surface and make them mix strongly with each other. In chemical products, fillers, also known as fillers, refer to solid materials used to improve processability, mechanical properties of products and/or reduce costs. In the field of sewage treatment, it is mainly used in the contact oxidation process, and microorganisms will accumulate on the surface of the filler to increase the surface contact with the sewage and degrade the sewage.
Fillers are also called fillers and extenders. Certain fillers are also extenders. Micronew fillers have good hiding power and are often used in the coating industry.
Fillers can be used in a variety of polyurethane products, such as polyurethane coatings, sealants: polyurethane slurry, special elastomer i polyurethane foam. Melamine plant fiber polymerization, ginseng polyol, etc., organic fillers can be used in polyurethane foam; calcium carbonate kaolin (ceramic clay, china clay), molecular sieve powder, talc powder, wollastonite, titanium dioxide, barite powder (barium sulfate)', etc. The fine inorganic powder can be generally used as a filler for polyurethane sealants, polyurethane flexible foam polyurethane elastomers, adhesives, and polyurethane coatings.
It generally refers to materials that are filled in other objects. In chemical engineering, packing refers to inert solid materials installed in packed towers, such as Pall rings and Raschig rings, etc., whose function is to increase the gas-liquid contact surface and make them mix strongly with each other. In chemical products, fillers, also known as fillers, refer to solid materials used to improve processability, mechanical properties of products and/or reduce costs. Among them, fillers that can significantly improve the strength of products, such as long fibers and whiskers, are often called reinforcing materials, and carbon black is called reinforcing fillers. In pharmaceutical tablets, cosmetics and detergents, solid materials and calcium carbonate are often added as fillers, but their purpose is to adjust dosage and concentration rather than improve performance, so it should be called a diluent. Although plastic plasticizers, rubber oil-extending agents and spinning oils can improve performance and affect costs, it is customary to treat these liquid materials as processing aids.
In polymer chemical industry, fillers (fillers) are the additives with the largest amount, and almost all plastics (including thermoplastic and thermosetting plastics), natural rubber and coatings use a large amount of fillers. For example, adding wood powder, clay or calcium carbonate in the manufacture of plastics can not only improve the mechanical properties of the product, increase the hardness, but also reduce the cost; using graphite, magnetic powder or mica as fillers can improve the electrical conductivity, magnetic flux and resistance of plastics. Thermal properties; adding carbon black or silicon dioxide (silica) to the rubber can significantly improve the physical properties of the product; adding titanium dioxide (titanium dioxide) to the spinning solution can shade and dye. In the coating industry, white or colored fillers (such as titanium dioxide, talc, calcium carbonate, barium sulfate, etc.) are often added to improve the optical, physical and chemical properties of coatings. Fillers (fillers) for such purposes are called extender pigments or Show color.