Do you often feel confused about whether to choose PP filter cotton or other types of cotton for the filter element? When choosing the filter element for a filter, PP cotton and other types of filters (such as folding filters, wire wound filters, etc.) have their own advantages and disadvantages, which need to be comprehensively judged based on specific needs, water quality conditions, and budget.
Characteristics of PP cotton filter cartridge
Filtering principle and accuracy: PP cotton filters large particles of impurities (such as sediment, rust, etc.) through the physical interception effect of polypropylene fibers, with a filtering accuracy of generally 1-5 microns. Its multi-layer gradient structure can intercept impurities step by step, but cannot filter smaller pollutants such as bacteria and viruses.
Advantages: Affordable price, suitable as the primary filtration layer of water purifiers. High safety, free of chemical adhesives, acid and alkali resistant, and organic solutions, meeting food grade hygiene standards. High flow rate, high porosity, small pressure difference, suitable for pre coarse filtration.
Disadvantages: Short lifespan: prone to clogging, requiring frequent replacement (may be replaced every 2-3 months when the water quality is poor)
Limited filtration range: unable to handle small particles and soluble pollutants.
Comparison of other types of filter cartridges
(1) Folding filter cartridge (flexible folding PP film)
Filtration effect: Using multi-layer folded filter membranes, the filtration accuracy can reach 0.1-1 microns, which can intercept bacteria and some viruses. The filtration area is 13 times that of ordinary PP cotton, and the pollutant holding capacity is stronger.
Advantage: Long lifespan. Under the same usage environment, the lifespan is about three times longer than that of ordinary PP cotton. Anti clogging, uniform aperture, not easily deformed or clumped.
Disadvantage: High price: The initial cost and replacement cost are higher than ordinary PP cotton .
(2) Wire wound filter element
Made by winding porous skeleton with fiber thread, materials include polypropylene, degreased cotton, etc., with customizable precision, suitable for filtering low impurity liquids.
Advantages: High temperature/corrosion resistance: suitable for special media (such as high temperature or corrosive liquids). High flow rate and low resistance: suitable for scenarios with high water pressure requirements.
Disadvantage: Narrow applicability: mainly used in industrial or specific water quality scenarios, less commonly used for household use.
(3) Composite filter element (such as activated carbon+PP cotton)
Filtering effect:
By combining the physical interception of PP cotton with the adsorption function of activated carbon, residual chlorine, odors, and organic matter can be removed, enhancing the overall filtration efficiency.
Advantages: Multi functional and balancing coarse filtration and chemical adsorption
Disadvantages:
Higher cost: Regular replacement of the activated carbon layer is required, which increases maintenance costs.
Suggestions for selection
Primary filtration scenario: If the water quality is good or only large particle impurities need to be intercepted, PP cotton has a higher cost-effectiveness and is suitable as a pre filtration layer (such as the first stage of a water purifier).
High precision demand scenario: If you need to remove bacteria, viruses, or deal with complex water quality situations, choosing a foldable filter is better, but you need to accept higher costs and maintenance frequency.
Special water quality treatment: For high temperature, corrosive liquids or industrial applications, wire wound filter cartridges are more suitable.
Comprehensive filtration solution: It is recommended to use a combination of multi-stage filter elements (such as PP cotton+activated carbon+RO membrane) to balance cost and effectiveness, avoiding reliance on a single filter element.
Summarize
The advantages of PP cotton lie in its low cost, safety, and suitability for pre filtration, but it requires frequent replacement; Folding filter cartridges and composite filter cartridges have better accuracy and lifespan, making them suitable for scenarios with high water quality requirements. The final choice needs to be considered comprehensively based on specific needs, water quality conditions, and long-term maintenance costs.
Dongguan Liansheng Non woven Technology Co., Ltd. was established in May 2020. It is a large-scale non-woven fabric production enterprise integrating research and development, production, and sales. It can produce various colors of PP spunbond non-woven fabrics with a width of less than 3.2 meters from 9 grams to 300 grams.
Post time: Apr-29-2025