50-inch PP Wound Filter Cartridge: Security Filter Cartridge for Large Water Treatment Equipment

Product Introduction

This 50-inch PP Wound Filter Cartridge is a professional security filtration component exclusively engineered for large-scale water treatment equipment, crafted with high-purity food-grade and industrial-grade polypropylene (PP) fiber as the core raw material and adopting advanced precision layer-winding technology. Tailored to the large-flow, continuous-operation characteristics of large water treatment equipment, its extended 50-inch structural design maximizes the effective filtration area and impurity-holding capacity, serving as a critical security filtration barrier in the water treatment process. The all-PP integral structure ensures excellent chemical stability, non-toxicity, and odorlessness, with no secondary pollution to the filtered water, and it can adapt to the complex water quality and harsh operating conditions of large water treatment systems, maintaining stable and reliable filtration performance to protect the precision core components of subsequent equipment from impurity damage. It is a standardized and high-adaptability security filter cartridge perfectly matched with large water treatment equipment in various industries.

Filtration Precision

The 50-inch PP Wound Filter Cartridge offers a comprehensive range of customizable filtration precision options to meet the diversified security filtration requirements of different large water treatment equipment, with standard precision grades covering from 1 μm to 200 μm. Adopting a gradient winding design of the PP fiber filter layer, the outer layer is designed with relatively loose winding density to intercept large-particle impurities such as sediment and rust, while the inner layer features dense winding to capture fine colloids and suspended solids. This gradient interception structure ensures uniform filtration efficiency across the entire 50-inch cartridge body, effectively removing insoluble particulate impurities of corresponding particle sizes in the water without causing rapid blockage of the filter layer, and providing precise security filtration protection for the follow-up core treatment units of large water treatment equipment.

Flux

Benefiting from the extended 50-inch size and optimized large effective filtration area, this filter cartridge exhibits outstanding high-flux performance, perfectly adapted to the large water output demand of large water treatment equipment. Under the standard operating conditions of 25℃ and 0.25MPa inlet pressure, the initial pure water flux of a single cartridge reaches 150-220 L/m²·h, and the actual stable working flux for raw water treatment remains at 80-150 L/m²·h for a long time. Even in the case of multi-cartridge parallel use in large water treatment systems, the flux performance remains consistent without mutual interference, ensuring the continuous and efficient water treatment capacity of the whole equipment, and avoiding the reduction of system processing efficiency due to insufficient filtration flux of a single cartridge.

Salt Rejection Rate

As a dedicated security filter cartridge for solid-liquid separation in large water treatment equipment, this 50-inch PP Wound Filter Cartridge is designed for the interception of insoluble particulate impurities and does not have the ion separation and rejection function of reverse osmosis, nanofiltration and other membrane components. Its salt rejection rate is 0%, which means it only retains insoluble impurities in the water while allowing all soluble salt ions, mineral substances and small molecular weight soluble substances to pass through the filter layer smoothly. This characteristic makes it an ideal security filtration component for large water treatment equipment in scenarios that require impurity removal without changing the original ionic composition of water, and it can be seamlessly matched with subsequent desalination, purification and other process units according to actual water treatment needs.

Pressure Drop

The product is optimized with a low-pressure drop structural design, fully considering the pressure loss control requirements of large water treatment equipment in the whole system operation. Under the rated working flux and standard temperature conditions, the initial pressure drop of a single 50-inch filter cartridge is only 0.01-0.04 MPa, which minimizes the water flow resistance in the security filtration link of the large water treatment system and effectively reduces the energy consumption of the system’s water pump and other power equipment. During long-term use, due to the high impurity-holding capacity of the gradient winding filter layer, the pressure drop of the cartridge rises slowly and linearly; the maximum allowable operating pressure drop is 0.18 MPa. When the system pressure drop reaches this value, replacement is recommended in a timely manner to ensure the normal operating pressure of the entire large water treatment equipment and avoid the impact of excessive pressure loss on the follow-up process units.

Molecular Weight Cutoff (MWCO)

This 50-inch PP Wound Filter Cartridge has a precise molecular weight cutoff range of 150,000 to 600,000 Daltons, which is specially calibrated for the security filtration demand of large water treatment equipment. It can effectively intercept macromolecular substances in the water such as colloidal particles, large molecular weight organic matter, microbial flocs and polymer impurities that may cause damage to the subsequent precision components of large water treatment equipment. The strict control of MWCO ensures that water molecules and small molecular weight beneficial substances (such as inorganic salts required for partial industrial process water) pass through smoothly, realizing the optimal balance between efficient impurity interception and unobstructed water flow, and providing reliable molecular-level security filtration protection for the core equipment of the large water treatment system.

Membrane Thickness

The PP fiber filter layer of the 50-inch PP Wound Filter Cartridge adopts a multi-layer composite thickened design, with the total effective membrane thickness of the filter layer reaching 180-280 μm. The inner and outer sides of the filter layer are equipped with high-strength PP mesh protective layers with a thickness of 90-110 μm each, and the inner skeleton is reinforced with a thickened PP support structure adapted to the 50-inch long size. This multi-layer thickened membrane design not only greatly improves the impurity-holding capacity and mechanical strength of the filter cartridge, but also effectively resists the water flow impact and pressure fluctuation in the large water treatment system. The uniform membrane thickness distribution across the entire 50-inch cartridge body ensures consistent filtration performance at all positions, avoiding local damage or reduced filtration efficiency caused by uneven stress.

Replacement Cycle

Under the normal operating conditions of large water treatment equipment (raw water turbidity ≤10 NTU, 24-hour continuous operation, regular routine maintenance and backwashing), the recommended replacement cycle of this 50-inch PP Wound Filter Cartridge is 4-8 months. If the raw water quality of the system is poor (turbidity >10 NTU) or the equipment operates at an ultra-high flux for a long time under peak load, the replacement cycle should be appropriately shortened to 2-4 months. In addition, when the pressure drop of the security filtration link of the large water treatment equipment reaches the maximum allowable value of 0.18 MPa, or the water flow rate decreases significantly and cannot be restored after professional backwashing, the filter cartridge should be replaced immediately to ensure the normal operation of the entire water treatment equipment and avoid the damage of unfiltered impurities to the subsequent precision core components.

Features

Extended 50-inch design: Maximizes the effective filtration area and impurity-holding capacity, perfectly adapted to the large-flow demand of large water treatment equipment, and reduces the number of parallel cartridges and installation space.
High-purity PP raw material: All components are made of food-grade/industrial-grade high-purity polypropylene, non-toxic, odorless, acid and alkali resistant, compatible with most industrial water treatment media, and no secondary pollution to water.
Gradient precision winding: Outer coarse and inner fine filter layer design realizes step-by-step interception of impurities, improves filtration efficiency, and slows down the blockage speed of the filter cartridge to extend service life.
Excellent high-flux performance: Large effective filtration area ensures high and stable flux, meets the continuous large water output demand of large water treatment equipment, and has low flux attenuation rate.
Low pressure drop & energy saving: Optimized structural design minimizes initial pressure drop and slow pressure rise, reduces the energy consumption of the system’s power equipment, and improves the overall energy efficiency of large water treatment equipment.
Strong mechanical strength: Thickened composite filter membrane and reinforced PP support skeleton, adapted to the 50-inch long size, resistant to water flow impact and pressure fluctuation, no deformation or rupture under long-term operation.
Standardized specification: Conforms to the universal installation standard of large water treatment equipment, easy to install and replace, no need for special tools, and high system matching degree.
Customizable precision: 1-200 μm full range precision options, customizable according to the actual security filtration requirements of different large water treatment equipment and processes.

Application Fields

This 50-inch PP Wound Filter Cartridge is a dedicated security filter cartridge for large water treatment equipment, and is widely used in various industries with large-scale water treatment demands, serving as a critical security filtration barrier in the water treatment process. In the municipal water supply industry, it is applied to the security filtration link of large water purification plants and water supply treatment equipment, removing sediment, rust and colloids in raw water to protect subsequent filtration and disinfection equipment. In the industrial water treatment field, it is used for the security filtration of large-scale process water, cooling water and circulating water treatment equipment in petrochemical, chemical, electronic and semiconductor industries, preventing particulate impurities from damaging precision core components such as reverse osmosis membranes and ultrafiltration membranes. In the food and beverage industry, it matches the large-scale production water purification equipment of beverage factories, dairy factories and food processing plants, realizing the security filtration of production water on the premise of ensuring food safety. In the pharmaceutical industry, it is applied to the security filtration of large-scale purified water and water for injection treatment equipment, complying with GMP pharmaceutical production standards. It is also widely used in the large-scale water treatment equipment of power plants, metallurgy, papermaking, printing and dyeing industries, as well as the large-scale seawater desalination, industrial reclaimed water reuse and domestic sewage treatment equipment, with broad application prospects in all large water treatment scenarios that require high-efficiency and reliable security filtration.

Conclusion

To sum up, this 50-inch PP Wound Filter Cartridge is a high-performance, high-adaptability dedicated security filter cartridge customized for the operating characteristics and large-flow demand of large water treatment equipment. Its core advantages of extended 50-inch design, large effective filtration area, high flux, low pressure drop and gradient precision winding perfectly solve the pain points of insufficient filtration capacity, high energy consumption and frequent replacement of filter cartridges in the security filtration link of large water treatment systems. The high-purity all-PP material ensures the safety and non-toxicity of the filtered water, and the thickened composite filter membrane and reinforced support structure make it adapt to the complex and harsh operating conditions of large water treatment equipment. As a critical security filtration barrier, it can effectively remove insoluble particulate impurities in the water, protect the subsequent precision core components of large water treatment equipment from damage, extend the service life of the whole equipment, and improve the overall operation efficiency and economic benefits of the water treatment system. With the characteristics of standardized specification, easy installation and customizable precision, it has become an indispensable core matching component for large water treatment equipment in various industries, providing stable, efficient and reliable security filtration protection for large-scale water treatment projects.

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