1. Beverage sterilization equipment ——Ultrafiltration device

　　Although ultrafiltration technology was introduced relatively late in China, it has developed very rapidly. As this technology continues to gain widespread adoption and public awareness grows, beverage sterilization equipment has brought numerous benefits to the beverage manufacturing industry.

　　Beverage sterilization equipment—ultrafiltration membrane systems—are available in several configurations for industrial applications, including flat‑sheet, tubular, spiral‑wound, and hollow‑fiber types. In China, plate‑type and tubular designs are most commonly used, with hollow‑fiber membranes in particular having been widely adopted for water treatment.

　　Hollow‑fiber ultrafiltration membranes represent a highly mature and advanced form of ultrafiltration technology. Developed from flat‑sheet membranes, these membranes feature a three‑dimensional geometry that delivers exceptionally high flux per unit volume, without relying on thin semipermeable layers. The walls of the hollow fibers are densely populated with micropores, whose pore size is expressed in terms of the molecular weight cut‑off (MWCO) of the retained substances; MWCOs can range from several thousand to several hundred thousand. Thanks to their hollow cylindrical structure, the productivity of membrane filtration systems per unit volume is significantly enhanced. Feed water flows under pressure either outside or inside the hollow fibers, giving rise to external‑pressure and internal‑pressure configurations, respectively. Ultrafiltration is a dynamic filtration process: the retained solutes can be removed along with the concentrate, preventing fouling of the membrane surface and enabling long‑term continuous operation. It has been demonstrated that, in practical applications, when appropriately sized, small‑diameter hollow‑fiber bundles are employed, the permeate flux can match that of a tens of square meters of ultra‑thin flat‑sheet membrane.

　　Hollow fibers are slender membrane tubes with a membrane layer on the inner wall; this layer is integrated with a sponge-like outer wall that features macropores, while the inner layer serves to perform ultrafiltration. The size of the pores in the inner membrane determines the size of the substances that can be retained within the fiber. Hollow fibers have an inner diameter of approximately 200 µm and are fabricated from inert, nonionic polymers, exhibiting a distinctive anisotropic (skin) structure and delivering remarkably high flow rates. Their key characteristics include: (1) a very large membrane surface area per unit volume of the module; (2) thin membrane walls that enable rapid liquid permeation; and (3) enhanced mechanical strength, owing to the geometric configuration of the hollow fibers, which provides inherent resistance to external pressure.

　　2. Beverage Sterilization Equipment – Disinfection Equipment

　　(1) Beverage sterilization equipment—ozone disinfectors—utilize ozone’s powerful oxidizing properties to achieve sterilization. Ozone is a strong oxidizing agent; at a certain concentration, exposure for 5–10 minutes can inactivate various fungi.

　　(2) Beverage sterilization equipment - Ultraviolet disinfectors: When microorganisms are exposed to ultraviolet light, their proteins and nucleic acids absorb the energy of the UV spectrum, causing protein denaturation and leading to microbial death. UV light can penetrate clear, transparent water to a certain extent, enabling effective disinfection. Ultraviolet sterilization does not alter the physical or chemical properties of water, is rapid, and produces no odor, making it widely applicable.