Introduction to Membrane Products and Technologies

The external pressure type polyvinylidene fluoride alloy film is a new generation of high-performance product successfully launched by Hangzhou Jinlong Membrane Technology Co., Ltd. after years of research and development. The Jinlong alloy membrane product, in response to the urgent needs of the country such as wastewater resource utilization and environmental protection, uses ultra-thin carbon nanosheets with moderate hydrophobicity, super-large two-dimensional planar structure, excellent oxidation resistance and high mechanical strength as additives. During the film formation process, it builds two-dimensional ordered water guiding channels, simultaneously achieving a synergical improvement in water flux, mechanical strength and chemical stability.

The Jinlong alloy film integrates key properties such as high orientation degree, high water flux, high tensile strength, high oxidation resistance, anti-pollution and service stability. Its comprehensive performance indicators exceed those of similar products from developed countries such as the United States, Japan and Singapore.

External pressure type sponge cell structure

The Jinlong alloy membrane and polyvinylidene fluoride ultrafiltration membrane present an ordered gradient structure in which the membrane pores gradually increase from the outside to the inside along the radial cross-section. The treate liquid enters from the outside of the hollow fiber membrane and seeps out from the inside of the hollow fiber membrane under pressure drive, effectively overcoming the shortcomings of the conventional external pressure hollow fiber membrane, such as small effective membrane area and insufficient backwashing. Meanwhile, as the separation layer is located inside the membrane structure, it effectively avoids the influence of external conditions during the preparation process, ensuring the uniformity of the membrane filament performance.

Uniform pore size and high-quality water production

The average filtration pore size of the Jinlong alloy membrane and the polyvinylidene fluoride ultrafiltration membrane is approximately 0.03μm, with a uniform pore size distribution, mainly within the range of 0.015 to 0.025μm. It can effectively remove suspended solids, bacteria, viruses, colloids, etc. The turbidity of the produced water is less than 0.1NTU, ensuring excellent effluent quality.

Main technical parameters