Product Description

The first part, the ultrafiltration concept of ultrafiltration equipment
Ultrafiltration membranes are widely used in water treatment projects. Ultrafiltration technology is playing an increasingly important role in the fields of reverse osmosis pretreatment, drinking water treatment, and water reuse. Ultrafiltration technology plays a key role in the sterilization and turbidity removal of alcohol and beverages, the removal of pyrogens of medicines, and the concentration of food and medicines.
The range of ultrafiltration filtration pore size and molecular weight cut-off has always been defined rather vaguely. It is generally believed that the filter pore size of ultrafiltration membranes is 0.001-0.1 microns, and the molecular weight cut-off is 1,000-1,000,000. Strictly speaking, the pore size of the ultrafiltration membrane is 0.001-0.01 microns, and the molecular weight cut-off is 1,000-300,000. If the filter pore size is greater than 0.01 microns, or the microporous membrane with a molecular weight cut-off greater than 300,000, it should be defined as a microfiltration membrane or a fine filtration membrane.
Ultrafiltration membranes generally used for water treatment have a molecular weight cut-off of 30,000-300,000, while ultrafiltration membranes with a molecular weight cut-off of 6,000-30,000 are mostly used in the fields of material separation, concentration, sterilization and heat removal.
The form of ultrafiltration membrane can be divided into two types: plate type and tube type. Tubular ultrafiltration membranes are further divided into hollow fiber, capillary and tubular types according to their tube diameters. The ultrafiltration membranes used in the market for water treatment are basically capillary type. The hollow fiber (inner diameter 0.1-0.5mm) polyethylene or polypropylene microporous membranes used in individual projects should actually be microfiltration membranes.
Ultrafiltration membrane modules are divided into three types: internal pressure type, external pressure type and submerged type. The driving force of submerged ultrafiltration membrane filtration is the pressure difference between the vacuum inside the membrane tube and the atmospheric pressure. For ultrafiltration membranes with high filtration accuracy requirements, this pressure difference is usually not easy to meet the requirements of the required filtration driving force, so the submerged module form is more suitable for ultrafiltration membranes or microfiltration membranes with lower filtration accuracy. When the external pressure ultrafiltration is flushing and recoiling, the flow rate of the liquid on the membrane surface is extremely uneven, which affects the flushing effect of the membrane surface. Therefore, the ultrafiltration membrane commonly used in water treatment or the internal pressure component structure has an advantage.
The second part, ultrafiltration equipment
2.1. Working principle of ultrafiltration equipment:
Ultrafiltration is a membrane separation process based on the principle of sieving separation and pressure as the driving force. The filtration accuracy is within the range of 0.005-0.01μm, which can effectively remove particles, colloids, bacteria, heat sources and polymer organic substances in water. It can be widely used in the separation, concentration and purification of substances. The ultrafiltration process has no phase inversion and is operated at room temperature. It is especially suitable for the separation of heat-sensitive substances. It has good temperature resistance, acid and alkali resistance and oxidation resistance. It can be continuous for a long time under the conditions of below 60℃ and pH 2-11. use.
2.2. Classification of ultrafiltration membranes:
Ultrafiltration membranes are divided into plate and frame type (plate type), hollow fiber type, nano-membrane surface ultrafiltration membrane, tube type, roll type and other structures according to the structure type. Among them, the hollow fiber ultrafiltration membrane is a mature and advanced form of ultrafiltration technology. The outer diameter of the hollow fiber is 0.4-2.0mm, and the inner diameter is 0.3-1.4mm. The wall of the hollow fiber tube is full of micropores. The pore diameter is expressed by the molecular weight of the material that can be retained, and the molecular weight can be cut off from thousands to hundreds of thousands. The raw water flows under pressure on the outside of the hollow fiber or in the inner cavity to form an external pressure type and an internal pressure type hollow ultrafiltration membrane respectively. Ultrafiltration is a dynamic filtration process. The retained substances can be removed with the concentrate without clogging the membrane surface, and it can run continuously for a long time.
The third part, the application of ultrafiltration technology:
Early industrial ultrafiltration was used in wastewater and sewage treatment. For more than 30 years, with the development of ultrafiltration technology, the application fields of ultrafiltration membrane technology have been extensive, including food industry, beverage industry, dairy industry, biological fermentation, biomedicine, pharmaceutical and chemical industry, biological preparations, and traditional Chinese medicine. Preparation, clinical medicine, printing and dyeing wastewater, food industry wastewater treatment, resource recovery and environmental engineering, etc.
The fourth part, the advantages of ultrafiltration equipment:
A. The ultrafiltration membrane element adopts the products of the brand membrane company to ensure that customers get the high-quality organic membrane elements in the world, thereby ensuring the interception performance and membrane flux.
B. The recovery rate of the system is high, and the quality of the products obtained is excellent, which can realize the high-efficiency separation, purification and high-fold concentration of materials.
C. There is no phase change during the treatment process, no adverse effect on the composition of the material, and the separation, purification, and concentration process is always at room temperature. It is especially suitable for the treatment of heat-sensitive substances, which completely avoids the destruction of biologically active substances by high temperature. Disadvantages, effectively retain the biologically active substances and nutrients in the raw material system.
D. The system has low energy consumption and short production cycle. Compared with traditional process equipment, the equipment operation cost is low, which can effectively reduce the production cost and improve the economic efficiency of the enterprise.
E. The system has advanced technological design, high degree of integration, compact structure, less floor space, simple operation and maintenance, and low labor intensity.
F. The system is made of sanitary pipes and valves, and the site is clean and hygienic, meeting the requirements of GMP or FDA production specifications.
G. The control system can be individually designed according to the user's specific requirements, combined with advanced control software, on-site centralized monitoring of important process operating parameters, to avoid manual misoperation, and multi-directional to ensure the long-term stable operation of the system.
Our company specializes in the production and operation of industrial water treatment equipment, single-stage reverse osmosis equipment, two-stage reverse osmosis equipment, deionized water equipment, direct drinking water equipment, mountain spring water equipment, natural mineral water equipment, drinking pure water equipment, ultra-pure water equipment, High-purity water equipment, medical purified water equipment, barreled water plant equipment, bottled water plant equipment, barrel filling machine, three-in-one vial line, barrel cap removing machine, bottle cap sterilizer, air shower, air purifier, Purification workbench, light inspection box, laboratory equipment, QS certification equipment and water treatment agent scale inhibitor, welcome to inquire!

Product Image