High-Precision PP Wound Filter Cartridge: Electronic Photovoltaic Ultrapure Water Front-End Pretreatment Filter Cartridge

Product Introduction

This High-Precision PP Wound Filter Cartridge is a professional front-end pretreatment filtration component custom-engineered for the electronic and photovoltaic industry’s ultrapure water preparation systems, crafted with high-purity food-grade and electronic-grade polypropylene (PP) fiber as the core raw material and adopting advanced micro-precision layer-winding technology with uniform pore size control. Tailored to the stringent water quality requirements of electronic and photovoltaic production processes, it serves as a critical front-end pretreatment barrier in ultrapure water systems, dedicated to efficiently removing trace fine particulate impurities, colloids and micro-suspended solids from raw water. The all-electronic-grade PP structural design ensures absolute non-toxicity, odorlessness and low extractables, with no secondary pollution to the filtered water, and it can adapt to the high-stability operation demands of ultrapure water pretreatment links. It effectively protects subsequent core purification equipment such as ultrafiltration, reverse osmosis and EDI modules from fine impurity contamination and blockage, laying a solid foundation for the preparation of high-quality ultrapure water that meets electronic and photovoltaic industry standards.

Filtration Precision

The High-Precision PP Wound Filter Cartridge is optimized for the ultra-high water quality requirements of electronic and photovoltaic ultrapure water front-end pretreatment, with standard filtration precision grades covering 0.5 μm to 5 μm, including the commonly used high-precision specifications of 0.5 μm, 1 μm, 2 μm and 5 μm. Adopting a dense and uniform precision winding process, the filter layer features a highly consistent pore size distribution with no pinhole defects, which can efficiently and thoroughly intercept trace fine suspended solids, colloidal particles, micro-rust and fine sediment in the pretreatment raw water of ultrapure water systems. This high-precision filtration performance ensures that the water entering the subsequent core purification link meets the strict inlet water quality standards, avoiding the damage of fine impurities to high-value precision water treatment equipment.

Flux

Benefiting from the optimized micro-precision winding structure and high-purity PP fiber material with excellent permeability, this filter cartridge maintains stable and efficient flux performance under high-precision filtration conditions, perfectly adapted to the continuous and stable water demand of electronic and photovoltaic ultrapure water pretreatment systems. Under the standard operating conditions of 25℃ and 0.2MPa inlet pressure, the initial pure water flux of a single cartridge reaches 60-120 L/m²·h, and the actual stable working flux for ultrapure water front-end pretreatment raw water remains at 40-80 L/m²·h for a long time. The flux attenuation rate is extremely low during use, which can ensure the continuous and stable water supply of the ultrapure water preparation system, and avoid the reduction of production efficiency caused by insufficient flux in the pretreatment link of electronic and photovoltaic production lines.

Salt Rejection Rate

As a high-precision microfiltration component for the front-end pretreatment of electronic and photovoltaic ultrapure water, this PP wound filter cartridge is designed for the efficient interception of fine insoluble particulate impurities and colloids, and does not have the ion separation and rejection function of reverse osmosis, nanofiltration and other desalination membrane components. Its salt rejection rate is 0%, which means it only retains fine insoluble impurities in the raw water while allowing all soluble salt ions, inorganic minerals and small molecular weight soluble substances to pass through the filter layer smoothly. This characteristic is fully in line with the demand of ultrapure water front-end pretreatment, which only needs to remove fine particulate impurities without changing the soluble ion composition of the water body, and provides qualified raw water for the subsequent desalination and deep purification links of the ultrapure water system.

Pressure Drop

The product is specially designed with a low-pressure drop optimization structure for high-precision filtration scenarios of electronic and photovoltaic ultrapure water front-end pretreatment. Under the rated working flux and standard temperature conditions, the initial pressure drop of a single filter cartridge is only 0.01-0.03 MPa, which minimizes the water flow resistance in the high-precision pretreatment link and effectively reduces the energy consumption of the ultrapure water system’s power equipment such as water pumps. During long-term use, due to the uniform pore size distribution and high impurity-holding capacity of the filter layer, the pressure drop of the cartridge rises slowly and linearly; the maximum allowable operating pressure drop is 0.12 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 ultrapure water preparation system and avoid the impact of excessive pressure loss on the subsequent core purification equipment.

Molecular Weight Cutoff (MWCO)

This High-Precision PP Wound Filter Cartridge has a precise and narrow molecular weight cutoff range of 50,000 to 200,000 Daltons, which is specially calibrated for the front-end pretreatment demand of electronic and photovoltaic ultrapure water. It can effectively intercept macromolecular substances in the raw water such as fine colloidal particles, macromolecular organic matter, microbial flocs and micro-polymer impurities that may cause damage to subsequent ultrafiltration, reverse osmosis and EDI modules. The strict and narrow MWCO control ensures that water molecules and small molecular weight soluble substances pass through the filter layer smoothly while realizing the efficient interception of all harmful macromolecular fine impurities, and provides reliable molecular-level high-precision pretreatment protection for the core purification equipment of the ultrapure water system.

Membrane Thickness

The PP fiber filter layer of this high-precision cartridge adopts a multi-layer composite micro-precision winding design with a uniform total effective membrane thickness of 100-180 μm. The inner and outer sides of the filter layer are equipped with high-density and low-resistance PP mesh protective layers with a thickness of 70-90 μm each, and the inner skeleton is a reinforced electronic-grade PP support structure with high rigidity and low extractables. The moderate and uniform membrane thickness design not only ensures the high-precision filtration performance and sufficient mechanical strength of the filter cartridge, but also effectively resists the water flow impact and pressure fluctuation in the ultrapure water pretreatment system. The electronic-grade raw material and precise manufacturing process ensure that the filter layer has no material shedding and low extractables, avoiding secondary pollution to the ultrapure water raw water and meeting the strict material requirements of the electronic and photovoltaic industry.

Replacement Cycle

Under the normal operating conditions of electronic and photovoltaic ultrapure water front-end pretreatment systems (raw water turbidity ≤1 NTU, 24-hour continuous and stable operation, regular routine maintenance), the recommended replacement cycle of this High-Precision PP Wound Filter Cartridge is 2-4 months. If the raw water quality of the pretreatment system fluctuates (turbidity >1 NTU) or the ultrapure water system operates at an ultra-high flux for a long time under peak production load, the replacement cycle should be appropriately shortened to 1-2 months. In addition, when the pressure drop of the ultrapure water front-end pretreatment link reaches the maximum allowable value of 0.12 MPa, or the water flow rate decreases significantly and cannot be restored after professional cleaning, the filter cartridge should be replaced immediately to ensure the high-precision filtration effect of the pretreatment link and avoid the damage of fine impurities to the subsequent high-value core purification equipment such as reverse osmosis membranes and EDI modules.

Features

Ultra-high precision filtration: 0.5-5 μm narrow precision range, uniform pore size distribution without pinholes, efficiently intercepting trace fine impurities in ultrapure water raw water, meeting electronic photovoltaic industry standards.
Electronic-grade high-purity PP material: All components adopt food-grade and electronic-grade PP raw materials, non-toxic, odorless, low extractables, no secondary pollution, in line with the strict material requirements of electronic and photovoltaic production.
Low pressure drop & energy saving: Optimized high-precision winding structure, minimal initial pressure drop and slow pressure rise, reducing the energy consumption of ultrapure water system and improving the overall energy efficiency.
Stable flux performance: Excellent permeability of high-purity PP fiber, low flux attenuation rate, maintaining continuous and stable water supply for ultrapure water pretreatment systems under high-precision filtration conditions.
High fine impurity-holding capacity: Multi-layer composite filter layer design, large effective adsorption area for fine colloids and particulates, extending the service life under high-precision filtration conditions.
High mechanical strength & low shedding: Reinforced electronic-grade PP inner skeleton and high-density protective mesh, resistant to water flow impact and pressure fluctuation, no fiber shedding during use.
Standardized specification & high matching: Conforms to the universal installation standard of electronic and photovoltaic ultrapure water system filter housings, easy to install and replace, no need for special tools, high system compatibility.
Dedicated for pretreatment: Customized for ultrapure water front-end pretreatment, perfectly matching subsequent ultrafiltration, reverse osmosis, EDI and other core purification equipment, providing qualified inlet water.

Application Fields

This High-Precision PP Wound Filter Cartridge is a dedicated front-end pretreatment component for electronic and photovoltaic industry ultrapure water preparation systems, and is widely used in the high-precision pretreatment link of ultrapure water in electronic, photovoltaic and other high-tech manufacturing industries with stringent water quality requirements. In the electronic manufacturing industry, it is applied to the ultrapure water front-end pretreatment of semiconductor chip production, printed circuit board (PCB) processing, liquid crystal display (LCD/LED) manufacturing and electronic component production, removing trace fine impurities to protect subsequent core purification equipment. In the photovoltaic industry, it is used for the ultrapure water front-end pretreatment of monocrystalline silicon/polycrystalline silicon wafer cutting, cleaning, solar cell manufacturing and photovoltaic module production, meeting the ultra-high water quality requirements of photovoltaic production processes. It is also widely used in the ultrapure water pretreatment of other high-tech industries such as lithium battery new energy, precision optical instrument manufacturing and bio-pharmaceutical high-purity water preparation, with broad application prospects in all industrial scenarios that require high-precision microfiltration pretreatment for ultrapure water preparation.

Conclusion

To sum up, this High-Precision PP Wound Filter Cartridge is a high-performance, professional dedicated filtration component custom-developed for the electronic and photovoltaic industry’s ultrapure water front-end pretreatment demands. Its core advantages of ultra-high precision filtration (0.5-5 μm), electronic-grade high-purity raw materials, low pressure drop, stable flux and high fine impurity-holding capacity perfectly solve the pain points of trace fine impurity contamination, core equipment blockage and unstable water quality in the ultrapure water pretreatment link of electronic and photovoltaic production. The all-PP structural design with low extractables ensures no secondary pollution to the raw water, fully meeting the strict water quality and material requirements of the electronic and photovoltaic industry. As a critical front-end pretreatment barrier of the ultrapure water preparation system, it effectively removes trace fine particulate impurities and colloids in the raw water, provides qualified inlet water for subsequent ultrafiltration, reverse osmosis, EDI and other core purification equipment, protects the high-value precision equipment from damage and extends its service life, and further ensures the stable preparation of ultrapure water that meets industry standards. With the characteristics of standardized installation, easy replacement and high system compatibility, it has become an indispensable core pretreatment component for the ultrapure water preparation systems of electronic, photovoltaic and other high-tech manufacturing industries, providing a stable, efficient and reliable high-precision filtration solution for the high-quality production of electronic and photovoltaic products.

High-Precision PP Wound Filter Cartridge Electronic Photovoltaic Ultrapure Water Front-End Pretreatment Filter Cartridge