Ultrafiltration (UF) is a kind of membrane filtration between microfiltration and nanofiltration. Ultrafiltration membrane is separated by the principle of screening, which is generally characterized by the interception of molecular weight in practical applications, and is mainly used to separate macromolecules, colloids and particles in solution from small molecular substances such as solvents. It is optional for organic matter with molecular weight from 10,000-100,000 Dalotn and is suitable for the separation, concentration and purification process of macromolecular substances and small molecular substances. The ultrafiltration membrane is an asymmetric membrane composed of a separating cortex and a spongy support layer, which is impenetrable to polymer substances, colloids, particles, bacteria and viruses, while water molecules, ions and small molecular weight substances can pass through, so as to achieve material separation.
Application fields: food industry (dairy, wine, gelatin, polysaccharide, etc.), biological fermentation engineering, beverage industry, plant extraction, pharmaceutical industry, biological preparations, metal processing, wastewater treatment and reuse (sugar-containing wastewater, electroplating wastewater, etc.), water treatment, etc.