杭州津陇膜材料科技有限公司
Hangzhou Jinlong Membrane Material Technology Co., Ltd.
杭州津陇膜材料科技有限公司
Hangzhou Jinlong Membrane Material Technology Co., Ltd.
Introduction to Membrane Products and Technologies
The internal pressure type polysulfone/polyethersulfone ultrafiltration membrane is a new type of high-performance ultrafiltration membrane product that Hangzhou Jinlong Membrane Materials Technology Co., Ltd. has developed after years of research and development, and is urgently needed by the country for wastewater resource utilization and environmental protection. The membrane filaments made of polysulfone (PSF)/ polyethersulfone (PES) materials have permanent hydrophilicity, with a water contact Angle of less than 30°. During the membrane formation process, a sponge-like water channel with dense inside and loose outside is constructed, simultaneously achieving a synergistic improvement in water flux, water quality, fouling resistance and usage stability of ultrafiltration membrane products.
Jinlong polysulfone ultrafiltration membranes integrate key properties such as permanent hydrophilicity, high water flux, excellent water quality, high pollution resistance, and usage stability. Their comprehensive performance indicators surpass those of similar products from developed countries like the United States, Japan, and Singapore.
Internal pressure spongy pore structure
The Jinlong polysulfone/polyethersulfone ultrafiltration membrane features a sponge-like pore structure where the membrane pores gradually increase from the inside to the outside along the radial cross-section. The treated liquid enters the hollow fiber membrane from the inside and seeps out from the outside under pressure drive, effectively overcoming the shortcomings of conventional internal pressure hollow fiber membranes 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 Jinlong polysulfone/polyethersulfone ultrafiltration membranes is approximately 0.03μm, with a uniform pore size distribution, mainly within the range of 0.02 to 0.03μm. It can effectively remove suspended solids, bacteria, viruses, colloids, etc. The turbidity of the produced water is less than 0.2 NTU, ensuring excellent effluent quality.
Main technical parameters
Product name | Polysulfone membrane | Polyethersulfone membrane |
Membrane model | PSF type 0.7/1.3 or type 1.0/1.7 | PES-0.7/1.3 type or 1.0/1.7 type |
Types of membranes | Ordinary membrane | Ordinary membrane |
Filtering method | Internal pressure type or external pressure type | Internal pressure type or external pressure type |
Membrane material | PSF | PES |
Aperture (μm) | <0.03 | <0.03 |
Inner/Outer diameter (mm) | 0.7/1.3 or 1.0/1.7 | 0.7/1.3 or 1.0/1.7 |
Elongation rate (%) | >60 | >80 |
Single filament strength (g) | ≥500 | ≥500 |
Hydrophilicity (Water contact angle, °) | <30 | <20 |
Initial pure water flux (L/(m²·h), 25°C, 0.1 MPa) | ≥500 | ≥550 |
Antioxidant performance (resistance to hypochlorous acid) | Good | Good |
Bubble point (water, MPa) | ≥0.30 | ≥0.30 |
Maximum inlet water pressure (MPa) | 0.40 | 0.40 |
Water production turbidity (NTU) | ≤0.2 | ≤0.2 |
Molecular weight cut-off (KD) | 67 | 67 |
Bacterial retention rate (%) | ≥99.9999 | ≥99.9999 |
pH value | 2～12 | 2～12 |
Cleaning recovery rate (%) | ＞96 | ＞96 |