Hollow fiber membrane technology is a high-tech technology developed in the mid-1960s. It is also the most widely used separation membrane form in current membrane water treatment technology. It has a high packing density. It has the advantages of small footprint, high separation efficiency, stable operation, easy operation and low cost. It can be used for sewage treatment and reuse, municipal water purification, solution separation, concentration and purification, etc. It has been widely used in environmental protection, Energy, petroleum, chemical industry, food and other fields.
Pore-forming mechanism ofpolytetrafluoroethylene hollow fiber membrane: in Under the action of extrusion, shearing, stretching, etc., PTFE resin particles become entangled and initially fibrillated; further stretching can cause the microfibers in them to elongate, forming a “fibril-node” microporous structure.
Hollow fiber membrane (also known as curtain membrane) and flat membrane are together called “organic membrane”. The main material is PVDF (polyvinylidene fluoride). The main material of all membranes on the market now. But now there is a new polytetrafluoroethylene hollow fiber membrane made of PTFE (polytetrafluoroethylene), which is said to be better than PVDF, and the pore size distribution will be more uniform when the membrane is stretched.
Printing and dyeing wastewater contains a large amount of toxic organic matter and inorganic salts, which is harmful to organisms and the environment. At present, physical and chemical methods, biochemical methods and membrane separation technology are mainly used for treatment. In membrane separation technology, reverse osmosis (RO) technology is widely used, but the raw water recovery rate is only 60% to 70%, resulting in a large amount of printing and dyeing RO concentrated water with high salt content.
Membrane distillation (MD) is an emerging membrane separation technology with a wide range of potential applications, including seawater desalination, high-salinity brine treatment, food processing, Heat recovery and biomedical applications. Membranes are an important part of MD systems and are used for liquid water transport and water vapor transport media. The practical application of MD is limited due to the lack of ideal hydrophobicity and high porosity of the membrane. Polytetrafluoroethylene (PTFE) has excellent chemical resistance, thermal stability and strong hydrophobicity, making it an attractive membrane material. However, due to the high solvent resistance and high melt viscosity of polytetrafluoroethylene, it is difficult to prepare polytetrafluoroethylene hollow fiber membrane by traditional processes.
It is the manufacturer of polytetrafluoroethylene hollow fiber membrane. The company has multiple automated assembly lines and a 100,000-level dust-free workshop, using Advanced instruments detect the quality of the film, and product quality is guaranteed. The products are suitable for many fields, ranking second in domestic sales in the sub-sector, and adding new overseas customers to 21 countries. Interested parties can enter the store for consultation.
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