Pleated High Flow Filter Cartridge for Ultrafiltration Water Treatment

Pleated High Flow Filter Cartridge for Ultrafiltration Water Treatment

Pleated high flow filter cartridge serves as the core pre-filter protection component matched with industrial ultrafiltration equipment, relying on multi-layer folded filter media to intercept suspended solids, colloids and particulate pollutants in raw water, effectively mitigating membrane fouling and physical damage to ultrafiltration modules. Each complete water treatment system is equipped with a matched industrial liquid filter to intercept large particles, rust slag and fibrous contaminants in advance, reduce the pollutant holding capacity of pleated filter cartridges and maintain stable long-term operation efficiency of the supporting ultrafiltration system; our complete product portfolio includes HF60 High Flow Filter Cartridge for Industrial Security Filtration, HF20 S 3M High Flow Water Filter Cartridge for Industrial Liquid, HDX4PF4 High Flow Water Filter Cartridge for Industrial Water and general-purpose High Flow Filter Element, which can be perfectly matched with ultrafiltration devices for pure water preparation, circulating water treatment, seawater desalination and petrochemical wastewater treatment projects. The folded structure greatly enlarges the effective filtration area, realizing large water flux under low system pressure drop and providing stable qualified influent for subsequent ultrafiltration deep purification treatment. This article systematically elaborates the structural composition, internal filtration operation mechanism, standardized technical parameters, strict full-process quality control system and diversified industrial application scenarios of pleated high flow filter cartridge. Global water treatment integrators, enterprise procurement departments and overseas distributors can purchase standard spot cartridges or customize folding structure size, filtration precision and sealing materials, together with full-cycle technical services to cut the daily operation and maintenance costs of factory ultrafiltration water stations.

1. Product Introduction of Pleated High Flow Filter Cartridge

Pleated high flow filter cartridge adopts deep pleated fold molding technology, being the most commonly used security filter consumable installed in front of hollow fiber and tubular ultrafiltration equipment in industrial water pipelines. Different from ordinary straight filter cartridges, continuous pleated folds expand the contact area between water flow and filter material several times, so a single cartridge can bear a large amount of water flow, decrease the quantity of filter housings arranged before ultrafiltration equipment and simplify the overall pipeline layout of water treatment skids. After raw water is coarsely intercepted by the front liquid filter, the pleated high flow filter cartridge performs precision filtration to trap tiny impurities that easily block ultrafiltration membrane pores, lengthen the chemical cleaning cycle of ultrafiltration components and reduce the overall loss rate of expensive ultrafiltration membranes.

We supply serialized pleated high flow filter products to satisfy different operating conditions of ultrafiltration equipment for global customers. For conventional ultrafiltration front-end safety filtration, select HF60 High Flow Filter Cartridge for Industrial Security Filtration; for industrial process liquid and production water filtration, apply HF20 S 3M High Flow Water Filter Cartridge for Industrial Liquid; for factory circulating water pretreatment matched with ultrafiltration equipment, choose HDX4PF4 High Flow Water Filter Cartridge for Industrial Water; for general standardized ultrafiltration supporting projects, adopt universal High Flow Filter Element; for petrochemical wastewater ultrafiltration pretreatment, configure Powering Petrochemical Progress: The Superiority of High-Flow Filter; for integrated automatic water treatment systems, use High-Flow Filter Cartridges: The Engine for Uninterrupted Filtration.

A complete filtering assembly consists of pleated filter media, high-strength PP support skeleton, multi-layer gradient filter structure, EPDM sealing ring, stainless steel filter housing and front liquid filter. Optional filter media materials are PP, PTFE and glass fiber, filtration precision covers 1~50μm, and the interface adopts mainstream 226 fin and flat end cap structure, compatible with most domestic and imported filter tanks. All finished cartridges need to pass bubble point integrity test and hydraulic pressure sealing test before delivery to guarantee zero leakage during coordinated operation with ultrafiltration equipment. Our factory supports bulk spot supply and personalized non-standard customization, and can provide complete inspection documents for customers’ project acceptance and customs clearance procedures.

2. Working Principle Matching with Ultrafiltration Equipment

Pleated high flow filter cartridge, front liquid filter and post-positioned ultrafiltration equipment form a three-stage gradient purification system: coarse filtration → pleated high flow precision filtration → ultrafiltration advanced purification, purifying water through physical interception, inertial deposition and surface adsorption of folded layers.

2.1 Normal Water Filtration Running State

Industrial raw water or wastewater firstly removes large sundries and bulky sediment via the front liquid filter, then flows into the filter housing and permeates from the outer folded surface to the central inner cavity of the cartridge. Fine particles, colloids and tiny organic pollutants are trapped inside the multi-layer pleated structure, while purified water converges into the central pipeline and flows into the ultrafiltration host to further remove macromolecular organics, bacteria and microorganisms. The pleated layered structure maintains stable large water flow under low differential pressure and stabilizes the influent water quality required by ultrafiltration equipment.

2.2 Differential Pressure Reminder for Cartridge Replacement

As pollutants accumulate in the pleated gap, the pressure difference between the inlet and outlet of the filter tank rises gradually. When the differential pressure reaches the warning value of 0.25 MPa, the on-site pressure gauge will give an alarm signal. Delayed replacement will increase pipeline flow resistance, reduce the water supply volume of ultrafiltration equipment, and even cause overload shutdown of the water pump system.

2.3 Backwashing Regeneration of Recyclable Cartridges

Glass fiber and PTFE pleated high flow filter cartridges can restore partial filtration flux through regular reverse clean water backwashing to wash off surface accumulated dirt. Disposable PP pleated cartridges must be replaced in time after the differential pressure exceeds the standard value to ensure the continuous and stable operation of the whole ultrafiltration system.

3. Standard Technical Parameters

Dimension & Flow Parameters

Outer diameter: 152 mm; mainstream lengths: 20 inch / 40 inch / 60 inch

Single cartridge rated water flow: 15 ~ 110 m³/h

Filtration precision: 1μm, 3μm, 5μm, 10μm, 20μm, 50μm

Connection form: 226 fin connector, flat opening end cap

Material Matching Parameters

Filter media: PP pleated membrane, PTFE pleated membrane, glass fiber folded material

Support skeleton: Pressure-resistant reinforced polypropylene bracket

Sealing material: EPDM, silicone rubber, Viton fluororubber (selected according to water medium corrosivity)

Operating Environment Indicators

Working temperature: PP material ≤60℃; PTFE material ≤120℃

Maximum working pressure: 1.0 MPa

Recommended replacement differential pressure: 0.25 MPa

Applicable pH range: PP cartridge 1~13; PTFE cartridge 0~14

Matching Auxiliary Parts

Front liquid filter, stainless steel filter housing, differential pressure transmitter, fixed locking support

4. Product Quality Control System

As a professional manufacturer integrating pleated filter cartridges and matched ultrafiltration equipment production, all production procedures strictly implement the ISO9001 international quality management system, and export products can provide third-party material certificates and bubble point test reports to meet market access standards of various countries.

Raw material incoming inspection: Pleated filter membrane, support frame and sealing rubber rings are sampled for tensile strength, corrosion resistance and folding uniformity test before warehousing to eliminate unqualified raw materials fundamentally.

In-process inspection: QC staff inspect folding compactness, hot-melt sealing strength and structural integrity one by one to avoid internal fluid channeling of finished cartridges.

Factory delivery inspection: Each batch of products undergoes 100% air tightness and pressure resistance test to adapt to stable operating demands of ultrafiltration water treatment systems.

Packaging & delivery: Independent vacuum dust-proof packaging matched with carton outer protection. Standard HF & HDX series goods are delivered within 3–5 working days, customized products take 10–18 working days for shipment.

Under standard water quality conditions, the service life of disposable PP pleated high flow filter cartridge is 1–3 months. We provide long-term technical selection guidance and remote after-sales troubleshooting services for customers using our filter & ultrafiltration matching systems.

5. Main Application Fields

Ultrafiltration & RO front security filtration: Pretreatment protection for ultrapure water and purified water production lines

Power plant water system: Condensed water & cooling circulating water filtration matched with workshop ultrafiltration devices

Seawater desalination projects: Raw water pre-filtration to protect desalination ultrafiltration membrane components

Petrochemical industry: Wastewater pretreatment before entering industrial tubular ultrafiltration equipment

Municipal reclaimed water reuse: Large-volume water purification for large-scale industrial ultrafiltration systems

Food and beverage industry: Process water primary filtration for factory ultra-clean water ultrafiltration equipment

 Frequently Asked Questions

Q1: What protection effect does the pleated high flow filter cartridge bring to ultrafiltration equipment?

A: The multi-layer pleated structure effectively intercepts fine impurities that are easy to adhere to ultrafiltration membranes, slow down membrane fouling speed, extend the service life of ultrafiltration membrane elements and reduce the frequency of chemical cleaning for ultrafiltration devices.

Q2: Can HF60, HF20 and HDX4PF4 cartridges customize filtration precision and physical dimensions?

A: Yes. Our technical team can adjust micropore precision, cartridge length and sealing material according to customer water quality indexes, pipeline flow and existing ultrafiltration equipment parameters to realize accurate system matching.

Q3: What is the regular replacement cycle of PP pleated high flow filter cartridge in industrial water pipelines?

A: For clean circulating water, the replacement cycle is 2–3 months; if raw water contains a large amount of sediment and impurities, the differential pressure rises rapidly, and replacement needs to be completed within one month.

Q4: Why is it necessary to install a liquid filter at the front of the pleated high flow filter cartridge?

A: The front liquid filter blocks massive impurities such as rust blocks and gravel, prevents hard foreign matters from scratching the folded filter surface, slows down the pollution speed of cartridges and lowers the overall maintenance cost of the ultrafiltration system.

Q5: Which factors will cause premature blockage of pleated high flow filter cartridges?

A: Excessive impurity concentration in inlet water, failure of front liquid filter, long-term overload water flow operation and excessively small selected filtration precision will all lead to sharp differential pressure rise and early cartridge blockage.

Q6: Can multiple pleated high flow filter cartridges be installed in parallel to supply water for large industrial ultrafiltration equipment?

A: Parallel installation inside a single filter tank is fully supported. Multiple cartridges work synchronously to supply stable large-flow influent for large ultrafiltration units, which is widely applied in centralized industrial water treatment projects.

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