Filter Element for Water Used in Industrial Ultrafiltration Pretreatment

1. Product Introduction of Filter Element for Water

Filter element for water covers multiple types of precision filter cartridges specially designed for aqueous medium filtration, serving as the key pretreatment barrier of industrial ultrafiltration systems. Raw water from rivers, underground water, wastewater recovery and production process water contains silt, rust, tiny fibers and organic colloids. Without effective interception by filter element for water, these contaminants will directly scour and block ultrafiltration membranes, cause irreversible membrane fouling, shorten membrane service life and raise the frequency of chemical cleaning. Hence, filter element for water becomes essential matching consumable for all industrial ultrafiltration projects.

Raw water firstly removes bulky impurities through upstream liquid filter, and then flows into filter element for water to capture micro contaminants that may block ultrafiltration membrane pores. We supply diversified filter elements suitable for different ultrafiltration working conditions:

• For large ultrapure water ultrafiltration pretreatment projects: select High Flow Filter Element

• For desalination and circulating water ultrafiltration systems: 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 water medium treatment: deploy Premium High Flow Water Filter Element for Industrial Liquid Filtration

The complete structure of filter element for water consists of filter media, internal reinforced support skeleton, upper and lower end caps and sealing rings. Optional materials include polypropylene, glass fiber, PTFE. Filtration precision ranges from 1μm to 50μm. Common connection modes include 226 fin connector and flat open end cap, compatible with mainstream stainless steel filter housings. All finished filter elements pass bubble point test and hydraulic pressure test before delivery to guarantee stable coordinated operation with ultrafiltration equipment. Our factory supports spot supply of standard specifications and customized production for non-standard ultrafiltration projects.

2. Working Principle: Collaborative Filtration with Ultrafiltration Equipment

The whole water purification workflow forms three-level progressive filtration: liquid filter coarse filtration → filter element for water precision filtration → ultrafiltration membrane deep separation. The filter element traps different particle pollutants relying on physical interception, inertial sedimentation and adsorption of multi-layer filter media.

2.1 Continuous Stable Filtration Operation

After preliminary coarse filtration by front liquid filter, raw water enters filter housing and penetrates inward from outer filter layer to the central water collecting pipe of filter element for water. Large-size impurities are intercepted by outer coarse filter layer, tiny colloids and organic pollutants are captured by inner fine filter layer. Purified water converges in central pipeline and flows steadily into ultrafiltration equipment to remove bacteria, macromolecular organics and residual micro suspended substances. Optimized structural design keeps low system pressure drop under continuous high-flow operation, avoiding insufficient water supply during continuous water production of ultrafiltration units.

2.2 Differential Pressure Reminder for Filter Replacement

Pollutants accumulate gradually on filter media during long-term operation, resulting in continuous rise of inlet and outlet differential pressure. When pressure difference reaches the warning value of 0.25MPa, operators should replace filter elements timely. Clogged filter elements will increase water pump load, reduce ultrafiltration water inflow and accelerate membrane contamination.

2.3 Coordination with Ultrafiltration Backwashing System

Water treated by filter element for water can be used as backwashing water source of ultrafiltration membrane modules. Mixed with compressed air to form gas-water cleaning medium, it thoroughly washes pollutants attached on ultrafiltration membrane surface, effectively slowing down membrane fouling and extending the chemical cleaning cycle of ultrafiltration equipment.

3. Standard Technical Parameters of Filter Element for Water

Dimension & Flow Specifications

• Outer Diameter: 152 mm

• Optional Length: 20 / 40 / 60 inch

• Single element rated flow: 65 ~ 120 m³/h

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

• Connection interface: 226 fin type, flat open end cap

Material Performance Parameters

• PP filter media: working temperature ≤60℃, pH value 1~13, cost-effective

• Glass fiber media: strong dirt holding capacity, maximum temperature ≤80℃

• PTFE filter media: excellent acid and alkali resistance, fit for corrosive wastewater

• Standard sealing ring: EPDM; optional silicone rubber, fluororubber

Operation Limitation Index

• Maximum allowable working pressure: 1.0 MPa

• Recommended replacement differential pressure: 0.25 MPa

• Initial system pressure drop: ≤0.02 MPa

Matching Supporting Accessories

Front industrial liquid filter, stainless steel filter housing, differential pressure gauge, pipeline fixing brackets

4. Strict Product Quality Control System

We are a professional manufacturer integrating filter element for water production and ultrafiltration pretreatment overall solutions. All production processes strictly implement ISO9001 international quality standards. Export orders can provide complete material certificates and batch inspection reports to satisfy overseas project acceptance.

1. Raw material inspection: filter media, support skeleton and sealing rings are sampled for tensile strength, corrosion resistance test.

2. Online production inspection: QC inspect each filter element’s structure, bonding strength and verticality to prevent internal liquid channeling.

3. Finished product inspection: 100% air tightness test and pressure resistance test for each production batch.

4. Packaging & delivery: independent vacuum moisture-proof packaging with shockproof cartons. Standard goods can be shipped within 3–7 working days; customized orders take 12–20 working days.

Under conventional clean raw water conditions, the service cycle of filter element for water is 1 ~ 3 months. We provide long-term free technical selection guidance and remote operation troubleshooting services for customers adopting matched filter and ultrafiltration systems.

5. Application Fields Matched with Ultrafiltration Equipment

1. Ultrapure water industry: pretreatment filtration for ultrafiltration + reverse osmosis combined water production system

2. Desalination project: raw water protection filter for seawater and brackish water ultrafiltration equipment

3. Petrochemical industry: precision filtration before tubular ultrafiltration for industrial wastewater treatment

4. Municipal water reuse: supporting filter elements for large-scale centralized ultrafiltration stations

5. Power plant industry: condensed water filtration matched with condensed water ultrafiltration equipment

6. Food & beverage factory: process water pretreatment for food-grade ultrafiltration devices

 FAQ

Q1: What protection functions can filter element for water provide for ultrafiltration equipment?A: It effectively intercepts various impurities in raw water, reduces pollutant load of ultrafiltration membranes, slows down fouling speed, extends membrane service life and lowers the shutdown maintenance frequency of ultrafiltration production lines.

Q2: Can you customize filter element for water to adapt to our existing ultrafiltration system?A: Yes. Our technical team adjusts filter material, precision and dimensions according to on-site water quality, system flow and filter housing parameters to achieve perfect matching with your ultrafiltration equipment.

Q3: What is the normal replacement cycle of filter element for water?A: Under stable clean water conditions, the replacement cycle is 1–3 months. If raw water turbidity is high, differential pressure rises rapidly and service life will be shortened obviously.

Q4: Why install liquid filter before filter element for water in ultrafiltration pretreatment process?A: The front liquid filter intercepts gravel, rust blocks and large hard impurities, avoiding sharp particles scratching filter media, delaying filter clogging, and forming dual protection for downstream ultrafiltration membranes.

Q5: Which factors lead to premature blockage of filter element for water?A: Excessive impurity content of inlet water, failure of front liquid filter, long-term overload flow operation and improper selection of filtration precision will cause rapid differential pressure increase and early clogging.

Q6: Can multiple filter elements for water run in parallel to supply water for large industrial ultrafiltration units?

A: Definitely yes. Multiple filter elements can be installed in parallel inside large filter housing, supplying stable large-flow qualified water for heavy-duty ultrafiltration equipment, widely used in municipal reuse water and industrial water treatment projects.

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