Ultrafiltration membrane is one of the earliest developed polymer membranes, which is a microporous filtration membrane with a rated pore size range of 0.001~0.02 microns. Applying appropriate pressure on one side of the membrane, the solvent and some low molecular weight solutes in the solution penetrate from the small pores of the ultrafiltration membrane to the other side of the membrane, while high molecular weight solutes or some emulsified micelle groups are intercepted, achieving the effect of filtration and separation.

In the field of water treatment, ultrafiltration membrane technology has a higher efficiency in filtering impurities compared to other filtration technologies, with a filtration accuracy of 99.99%, which can effectively remove the vast majority of harmful substances in water; And with little or no use of chemical agents, it effectively avoids secondary pollution of water quality, resulting in better water quality after treatment. From an operational perspective, the filtration system based on ultrafiltration membrane technology has a high degree of automation, simple and reliable operation, and only has two operations: on and off. Due to its strong chemical stability, resistance to acid and alkali corrosion, and high temperature resistance, ultrafiltration membranes can be sterilized and disinfected at high temperatures, making them widely applicable.

The principle of ultrafiltration membrane

Ultrafiltration is a membrane separation process that uses screening as the separation principle and pressure as the driving force, with a filtration accuracy of 0.005-0.01 μ Within the range of m, only solvents (such as water molecules), inorganic salts, and small organic molecules in the solution are allowed to pass through, effectively intercepting suspended solids, colloids, proteins, and microorganisms in the solution, and removing particles, colloids, and high molecular organic substances from the water. It can be widely used for the separation, concentration, and purification of substances.

Classification of ultrafiltration membranes

Ultrafiltration membranes can be divided into various structures according to their structural types, including plate and frame (plate type), hollow fiber type, nano membrane surface ultrafiltration membrane, tube type, roll type, etc.

Advantages of ultrafiltration equipment

Modular design, easy to expand, and high degree of automation.

Compact structure, small footprint, easy operation and maintenance.

Short production cycle, low system energy consumption, and low operating costs.

The system has a high recovery rate and can achieve material separation, purification, and high magnification concentration.

application area

The application fields of ultrafiltration membrane technology are extensive, mainly including food industry, beverage industry, dairy industry, biological fermentation, biomedicine, pharmaceutical and chemical industry, biological preparations, traditional Chinese medicine preparations, clinical medicine, printing and dyeing wastewater, food industry wastewater treatment, resource recovery, and so on.

Environmental protection: Advanced treatment of industrial wastewater, urban water reuse system, recovery of electrophoretic paint and oil products.

Mineral water: In engineering design, based on the water quality analysis report of the mineral water source, targeted selection of membrane pore size and membrane type will be made to design ultrafiltration design.

Food: Ultrafiltration technology is gradually adopted in the production of dairy products, fruit juice, wine, seasonings, and other foods, including clarifying and disinfecting fruit juice, and removing bacteria from soy sauce and vinegar.

Medicine: In pharmaceutical and biochemical production, ultrafiltration technology is used to separate and purify thermosensitive substances, such as using ultrafiltration to separate and concentrate bioactive substances (such as enzymes, viruses, nucleic acids, special proteins, etc.).

Pure water and ultrapure water: primary purification of industrial water, RO pretreatment for the preparation of pure and ultrapure water, and terminal treatment for pure and ultrapure water.

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