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E-mail
sales@darllyfiltration.com
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Phone
15867199277
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No.1 Beishan North Road, Xindeng Town, Fuyang District, Hangzhou City
Hangzhou Dali Filter Equipment Co., Ltd
Working principle and wide application of hydrophilic PVDF folding filter cartridge
Date: 2025-09-02Read: 9
The working principle and wide application of hydrophilic PVDF folding filter cartridge are as follows:
1、 Working principle
1. Micro porous filtration mechanism
Through the uniform microporous structure on the surface of polyvinylidene fluoride (PVDF) filter membrane (with an accuracy of 0.22 μ m-0.45 μ m), physical screening is achieved, effectively intercepting bacteria, viruses, and small particles. After hydrophilic modification, the surface contact angle of the filter membrane decreases (such as from 86.99 ° to 68.62 °), enhancing its affinity for aqueous solutions and reducing filtration resistance.
2. Chemical stability support
PVDF material is resistant to strong acids, strong alkalis (PH1-14), and organic solvents, ensuring stable operation in corrosive environments. The folding structure design increases the filtering area while maintaining low pressure drop and high flux.
2、 Application Fields
1. Water treatment and purification
Pre filtration of reverse osmosis system, preparation of ultrapure water, interception of suspended solids and microorganisms.
Industrial wastewater treatment (such as oily and printing and dyeing wastewater) and reclaimed water reuse.
2. Biopharmaceuticals
The sterilization and filtration of the medicinal solution, as well as the purification of the culture medium, comply with USP biosafety standards.
Hemodialysis and drug delivery rely on their biocompatibility.
3. Food and Chemical Industry
Clarify and filter beverages and alcoholic beverages to ensure food safety.
Purification and separation of corrosive chemicals such as acids and bases.
4. Electronics and Energy
Electronic grade ultrapure water filtration to prevent particle contamination.
In the field of photocatalytic degradation (such as PVDF/TiO ₂ composite films).
3、 Technical advantages
1. Hydrophilic modification: By adding ionic liquids or nanoparticles (such as TiO ₂) to enhance flux, the equilibrium moisture content can reach 59.68%.
2. Self cleaning ability: The microporous structure reduces the attachment of pollutants and extends the service life.
3. Temperature resistance: Suitable for temperature range of -40 ℃ to 150 ℃, suitable for extreme working conditions.
