Pleated security filter element is a typical high-flow precision filter component widely adopted in the pretreatment section of industrial water treatment, installed upstream of ultrafiltration equipment to intercept suspended particles, colloids and particulate pollutants to protect ultrafiltration membrane modules. A complete industrial water treatment pipeline is equipped with matched industrial liquid filter to remove large solid impurities in advance, forming two-stage graded filtration and lowering the pollution burden of pleated security filter elements; our complete filter product portfolio includes High Flow Filter Element, 60" PP High Flow Water Filter for Industrial Ultrafiltration Systems, Pleated High Flow Filter Cartridge for Ultrafiltration Water Treatment and Premium High Flow Water Filter Element for Industrial Liquid Filtration, which can be perfectly matched with hollow fiber ultrafiltration and tubular ultrafiltration systems in multiple industries. With folded gradient filter media and integrated reinforced support structure, the pleated security filter element features large dirt holding capacity and stable low pressure drop, continuously providing qualified influent water for subsequent ultrafiltration deep purification. This article comprehensively introduces structural features, cooperative operating principle with ultrafiltration equipment, standardized technical parameters, strict quality management system and diversified industrial application scenarios of pleated security filter element. Water treatment EPC suppliers, factory water station operators and global filter distributors can choose standard in-stock products or customize filter materials, filtration accuracy and sizes to reduce long-term operation costs of ultrafiltration water treatment stations.
Pleated Security Filter Element for Industrial Ultrafiltration Pretreatment
Pleated security filter elementis a typical high-flow precision filter component widely adopted in the pretreatment section of industrial water treatment, installed upstream of ultrafiltration equipment to intercept suspended particles, colloids and particulate pollutants to protect ultrafiltration membrane modules. A complete industrial water treatment pipeline is equipped with matched industrial liquid filter to remove large solid impurities in advance, forming two-stage graded filtration and lowering the pollution burden of pleated security filter elements; our complete filter product portfolio includes High Flow Filter Element, 60" PP High Flow Water Filter for Industrial Ultrafiltration Systems, Pleated High Flow Filter Cartridge for Ultrafiltration Water Treatment and Premium High Flow Water Filter Element for Industrial Liquid Filtration, which can be perfectly matched with hollow fiber ultrafiltration and tubular ultrafiltration systems in multiple industries. With folded gradient filter media and integrated reinforced support structure, the pleated security filter element features large dirt holding capacity and stable low pressure drop, continuously providing qualified influent water for subsequent ultrafiltration deep purification. This article comprehensively introduces structural features, cooperative operating principle with ultrafiltration equipment, standardized technical parameters, strict quality management system and diversified industrial application scenarios of pleated security filter element. Water treatment EPC suppliers, factory water station operators and global filter distributors can choose standard in-stock products or customize filter materials, filtration accuracy and sizes to reduce long-term operation costs of ultrafiltration water treatment stations.
The pleated security filter element is also known as pleated cartridge filter, acting as the last barrier of pretreatment before ultrafiltration systems. Raw water often carries silt, rust, fine fiber and organic particles. Without effective interception, these contaminants will directly scour and block ultrafiltration membranes, causing irreversible membrane fouling, shortening membrane service life and increasing chemical cleaning frequency. Therefore, pleated security filter element has become standard supporting equipment for industrial ultrafiltration projects.
Raw water firstly removes bulky impurities through front-end liquid filter, and then flows into pleated security filter element to capture micro contaminants which are likely to block ultrafiltration membrane pores. We supply multiple filter elements applicable for various ultrafiltration working conditions:
For large-scale ultrapure water ultrafiltration pretreatment: select High Flow Filter Element
For circulating water and desalination ultrafiltration projects: adopt 60" PP High Flow Water Filter for Industrial Ultrafiltration Systems
For municipal reclaimed water reuse ultrafiltration stations: use Pleated High Flow Filter Cartridge for Ultrafiltration Water Treatment
For chemical wastewater and corrosive medium filtration: deploy Premium High Flow Water Filter Element for Industrial Liquid Filtration
The whole structure of pleated security filter element consists of pleated filter media, internal support skeleton, upper and lower end caps and sealing rings. Optional raw materials include PP, glass fiber, PTFE. Filtration precision ranges from 1μm to 50μm. Common connection types include 226 fin connector and flat open end cap, compatible with most stainless steel high flow filter housings on the market. All finished products pass bubble point test and hydraulic pressure test before delivery, guaranteeing stable matching operation with ultrafiltration equipment. Our factory supports spot supply of standard specifications and customized production for non-standard ultrafiltration projects.
The whole purification chain forms three-level progressive filtration: liquid filter coarse filtration → pleated security filter element precision filtration → ultrafiltration membrane deep separation. The filter element relies on physical interception, inertial deposition and adsorption of multi-layer folded filter layers to trap pollutants of different particle sizes.
After preliminary coarse filtration by upstream liquid filter, raw water enters filter housing and permeates from outer folded layer inward to the central water collection pipe of pleated security filter element. Large particles are intercepted by outer coarse filter layer, tiny colloids and organic pollutants are captured by inner fine filter layer. Clear water converges into central pipeline and flows steadily into ultrafiltration equipment to remove macromolecular organics, bacteria and tiny suspended substances. Optimized folding design maintains low system pressure drop under continuous high-flow operation, avoiding insufficient water supply during continuous water production of ultrafiltration systems.
Pollutants continuously accumulate inside filter folds during operation, leading to gradual rise of inlet and outlet differential pressure. When pressure difference reaches 0.25MPa warning threshold, operators should replace filter elements in time. Blocked filter elements will increase pump load, reduce ultrafiltration water inflow and accelerate membrane contamination.
Water treated by pleated security filter element can be adopted as backwashing water source of ultrafiltration membrane modules. Mixed with compressed air to form gas-water cleaning medium, it can thoroughly flush pollutants attached on membrane surface, effectively slowing down membrane fouling and prolonging the chemical cleaning cycle of ultrafiltration equipment.
Outer Diameter: 152 mm
Optional Length: 20 / 40 / 60 inch
Single element rated flow: 70 ~ 120 m³/h
Filtration precision options: 1μm, 3μm, 5μm, 10μm, 20μm, 50μm
Connection interface: 226 fin type, flat open end cap
PP filter media: working temperature ≤60℃, pH 1~13, cost-effective
Glass fiber media: excellent dirt holding capacity, working temperature ≤80℃
PTFE filter media: acid and alkali resistance, applicable for strong corrosive liquid
Standard sealing ring: EPDM; optional silicone rubber, fluororubber
Maximum allowable working pressure: 1.0 MPa
Recommended replacement differential pressure: 0.25 MPa
Initial system pressure drop: ≤0.02 MPa
Front industrial liquid filter, stainless steel filter housing, differential pressure gauge, pipeline fixing supports
We are a professional manufacturer integrating pleated security filter element production and ultrafiltration pretreatment overall solutions. All production processes strictly implement ISO9001 international quality management standards. Export orders can provide complete material certificates and batch inspection reports to satisfy overseas project acceptance requirements.
Raw material inspection: filter media, skeleton raw materials and sealing rings are sampled for tensile, corrosion resistance and folding uniformity tests.
Online production inspection: QC staff inspect folding tightness, hot melt bonding strength and verticality one by one to avoid internal liquid channeling.
Finished product inspection: 100% tightness test and burst pressure test for each batch.
Packaging & delivery: independent vacuum moisture-proof packaging plus shockproof cartons. Standard products can be delivered within 3–7 working days; customized orders take 12–20 working days.
Under conventional clean water conditions, the service life of pleated security filter element is 1.5 ~ 3 months. We provide long-term free parameter selection guidance and remote operation troubleshooting services for customers adopting matched filter and ultrafiltration systems.
Ultrapure water production: pretreatment security filtration for ultrafiltration and RO combined water making system
Seawater and brackish water desalination: raw water protection for desalination ultrafiltration equipment
Petrochemical wastewater treatment: upstream precision filtration for tubular ultrafiltration systems
Municipal reclaimed water reuse: matched filtration for large-scale centralized ultrafiltration stations
Power plant circulating water system: supporting filtration for condensed water ultrafiltration equipment
Food and beverage industry: process water pretreatment for food-grade ultrafiltration units
Q1: What protection effect can pleated security filter element bring to ultrafiltration equipment?
A: It effectively intercepts fine impurities inside raw water, reduces pollutant load on ultrafiltration membranes, slows down membrane fouling rate, extends membrane service life and cuts shutdown maintenance frequency of ultrafiltration production lines.
Q2: Can you customize pleated security filter element to match our existing ultrafiltration system?
A: Yes. Our technical team adjusts filter material, precision and size according to on-site water quality, system flow and filter housing parameters to realize seamless matching with your ultrafiltration equipment.
Q3: What is the conventional service life and replacement cycle of this filter element?
A: Under stable clean water quality, the replacement cycle is 1.5–3 months. If raw water turbidity is high, pressure difference rises rapidly and replacement cycle will be shortened.
Q4: Why install liquid filter upstream of pleated security filter element in ultrafiltration pretreatment?
A: The front liquid filter traps gravel, rust blocks and large hard impurities, preventing sharp particles from scratching folded filter media, delaying filter clogging, and forming dual protection for downstream ultrafiltration membranes.
Q5: What factors lead to premature blockage of pleated security filter element?
A: Excessive impurity concentration of inlet water, failure of front liquid filter, long-term overload operation and improper selection of filtration precision will cause rapid differential pressure rise and early clogging.
Q6: Can multiple pleated security filter elements run in parallel to supply water for large industrial ultrafiltration units?
A: Absolutely yes. Multiple filter elements can be installed in parallel inside large filter housing, providing stable large-flow qualified water for heavy-duty ultrafiltration equipment, widely applied in municipal desalination and industrial water treatment projects.
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