Hollow Fiber Membrane Manufacturer & Supplier

Defining Hollow Fiber Membrane

A hollow fiber membrane is an autonomous filtration component with a hollow, fine tube structure. The fibers are reinforced and do not depend on other components for structural strength. They are typically asymmetric, with a dense filtration layer on either the inner or outer surface of the fiber depending on the application. The fiber walls contain microholes that capture bacteria, viruses, colloids, and other unwanted particles. The pore size of a hollow fiber membrane filter can be determined by the molecular weight it can retain, which ranges from a few thousand Daltons to several hundred thousand Daltons. This allows the membrane to be selected for different microfiltration and ultrafiltration applications. When these fibers are bundled together into one module, they form a massive filtration area in a small space.

How Hollow Fiber Membranes Work

A hollow fiber membrane filter works by allowing liquid or gas to flow through the tiny pores in the fiber wall. Depending on the design, the flow direction varies:

• Inside-out membrane flow: Liquid flows through the hollow fiber from the inside to the outside, with the filtration layer on the inner surface for efficient microfiltration and ultrafiltration.
• Outside-in flow: Liquid flows from outside to inside. This design accommodates higher feed solids, is easier to clean, and is commonly used when feed water is turbid.

The pores trap contaminants like microbes and large organic molecules, while clean permeate passes through. Gas separation works by sorting molecules based on their size or other properties. The output is always clean and filtered; all contaminants are removed, and water is driven through the membrane wall by pressure or vacuum differentials.

Key Features of Hollow Fiber Membranes

• High surface area: The bundled fiber structure occupies a very small module footprint with a very large filter area.
• Fine, uniform pores: Typically around 0.02–0.1 µm for UF, removing bacteria, viruses, and colloids for high, consistent water quality.
• High mechanical strength: Reinforced fibers resist stretching and breakage and withstand regular backwashing.
• Chemical resistance: PVDF and other polymers are resistant to acids, alkalis, and oxidants, allowing for aggressive cleaning.
• Easy cleaning: The membrane is backwashable and chemically cleanable, maintaining flux stability and extending service life.
• Customizable: Pore size, fiber configuration, and module size can be adjusted to the application.

These characteristics make hollow fiber membrane technology increasingly accepted in various industrial applications.

Membrane Materials

Oxymo Technology is an experienced hollow fiber membrane manufacturer & supplier that offers hollow fibers made from a variety of high-performance polymers for various tasks:

• Reinforced PVDF: High strength and excellent chemical/oxidation resistance make it the workhorse material for water and wastewater treatment.
• PVC alloy: Cost-effective for municipal and general water treatment.
• PAN, PS, PES: Chosen for special chemical, thermal, or separation properties.

Unlike generic providers, we treat material selection as central to performance — our engineers guide buyers in identifying the best polymer, pore size, and configuration for their feed water.

Hollow Fiber Membrane Applications

Hollow fiber membrane is widely used in many industries because of its efficiency and flexibility.

Water Treatment

Drinking water microfiltration, ultrafiltration, pre-treatment for RO, surface water purification, groundwater purification, seawater purification and recycling of municipal and industrial wastewater Hollow fiber membrane filters are used to filter out suspended solids, turbidity, bacteria, and viruses to ensure stable and high-quality water.

Pharmaceuticals & Biotechnology

Protein and enzyme separation, cell separation in bioreactors, and sterile filtration to keep products contamination-free.

Food & Beverage Processing

Clarifying juice, purifying dairy proteins, and ensuring microbial safety for bottled water and other drinks.

Gas Separation

Industrial gas separation, such as oxygen and nitrogen production, and other separations based on molecular size or permeability.

Benefits of Using Hollow Fiber Membranes

• Customizable properties: Pore sizes and configurations adjusted to the application.
• Durable and long-lasting: Corrosion-resistant, chemical-resistant, with a typical service life of 3–7 years or more.
• Energy-efficient: Low energy usage and a long lifespan lower total operating costs.
• Compact & high-capacity: Large filtration area in a small footprint, ideal for space-limited plants.
• Low chemical dosage: Minimal coagulant/pH dosing compared to media filters, resulting in reduced sludge and lower costs.

The advantages of the hollow fiber membrane make it an ideal membrane for most modern filtration needs.

How Are Hollow Fiber Membranes Made?

The manufacturing of hollow fiber membranes is a highly accurate process which produces consistent quality and performance:

• Material selection: Selection of the appropriate polymer (PVDF, PES, PAN or PVC) for the intended purpose.
• Fiber formation (spinning): The polymer solution is extruded through a spinneret to produce fibers of the desired diameter, with a hollow tube-like core.
• Phase inversion & pore formation: The fiber solidifies, and its microporous structure forms under controlled conditions in a bath.
• Bundling & potting: Thousands of fibers are bundled and sealed (potted) into a module housing.
• Testing & quality control: Integrity, flux, and rejection are checked before the module leaves the factory.

Such careful production under strict quality control ensures reliable and repeatable filtration in the field.

Challenges with Hollow Fiber Membranes

Although hollow fiber membranes have numerous benefits, there are also challenges that must be overcome by good engineering:

• Fouling: Fouling during use may prevent pores from functioning properly, and scheduled backwashing and chemical cleaning reduce fouling and ensure long-term performance.
• Fiber breakage: addressed by reinforced fibers with high tensile strength.
• Pre-treatment requirements: very high-solids feeds might require screening or an outside-in configuration.

These challenges are readily managed through good engineering — exactly where a specialist manufacturer with reinforced-fiber technology adds value.

Hollow Fiber Membrane Price

The hollow fiber membrane price depends on several factors: membrane material (PVDF, PES, PVC, etc.), pore size and grade, module size and fiber count, configuration (pressurized vs. submerged, inside-out vs. outside-in), total membrane area, and order volume. As a direct factory, Oxymo Technology can quote a competitive hollow fiber membrane price, and larger order volumes qualify for better wholesale pricing. Want a quote? Please reach out to Oxymo Technology with your pore size, type of module and quantity (including any bulk order) and we will provide you with factory price options and wholesale prices for volume orders.

Manufacturing, Quality Control & Certifications

As a vertically integrated manufacturing company, Oxymo Technology designs and manufactures its hollow fiber membranes in-house in Foshan, China, supported by invention patents and cooperation with research institutions. Production and management follow ISO 9001 and ISO 14001 standards, and the membranes are CE certified. This verified quality control assures water treatment, pharmaceutical, and industrial buyers of consistent quality across every batch. This is why Oxymo Technology is the preferred hollow fiber membrane manufacturer & supplier for customers.

OEM, Wholesale & Bulk Supply

Oxymo Technology offers OEM/ODM of hollow fiber membranes and modules with custom-made pore sizes, module dimensions, connection type and private branding. We are a wholesaler and direct factory, providing competitive wholesale pricing and bulk order supply to system integrators, water treatment developers, and equipment manufacturers. The wholesale price tiers for volumes scale according to the size of the order, allowing the distributor or equipment manufacturer to develop a UF product line based on a certified, patented membrane platform. Oxymo Technology is a leading hollow fiber membrane manufacturer that can provide each bulk order with the same level of quality, from small trials to large bulk orders.

Global Supply & Distribution

Oxymo Technology is a global supplier and an experienced exporter whose membranes and systems are supplied to customers in more than 40 countries. Global distribution network responsible for export documentation and logistics, hollow fiber membranes shipped from our China factory are ready to install in the destination market. With direct factory price sourcing, Oxymo Technology is a reliable global supplier and long-term partner for UF distributors & OEM programs around the world. The Oxymo Technology is a true manufacturing company owning the production, while the companies that deal only in trading hollow fiber membranes do not have their own production team. But, this in-house control is what ensures the quality and reliability of the membranes, and Oxymo Technology is a specialist manufacturing company. Therefore, a pure trading supplier cannot guarantee the specifications of its membranes in repeat orders.

Frequently Asked Questions

What is a hollow fiber membrane?

It is a self-supporting, tube-shaped filtration fiber with a microporous wall and hollow core. A module is a bundle of thousands of hollow fibers that remove suspended solids, bacteria, viruses, and colloids from water, gases, or process liquids, with a large surface area for filtering.

What is the difference between inside-out and outside-in flow?

In an inside-out flow, liquid moves from inside the fiber outward (dense layer inside), which is common for MF/UF. Outside-in flow occurs when liquid enters from outside the fiber, which is well suited for high feed solids and easier to clean when feed water is turbid.

What materials are hollow fiber membranes made from?

Membranes are commonly made from reinforced PVDF, plus PVC alloy, PAN, PS, and PES. PVDF is preferable due to its strength and chemical/oxidation resistance; Oxymo Technology selects the polymer to match the feedwater and duty.

What pore size do UF hollow fiber membranes have?

The pore size of UF hollow fiber membranes is approximately 0.02 to 0.1 µm, which eliminates bacteria, viruses, and colloids while allowing water and small molecules to pass.

What is the lifespan of hollow fiber membranes?

The average life of a hollow fiber is 3–7 years or more depending upon feedwater, cleaning procedure, and operating flux. Reinforced fibers and regular backwashing increase service life.

Do you offer customized membranes, OEM, and bulk supply?

Yes, as an OEM manufacturer and wholesaler, we offer customized pore sizes, module dimensions, and private-label branding, along with wholesale pricing and volume order supply.

How much does a hollow fiber membrane cost?

It is dependent on material, pore size, module size, configuration, and volume. Contact Oxymo Technology with your specification and quantity for a factory price and wholesale prices on bulk orders.

Request a Quote

Looking for a trustworthy hollow fiber membrane supplier & manufacturer? A certified China-based factory with competitive factory prices, Oxymo Technology is an experienced exporter supplying customized OEM modules and bulk order supply in both hollow fiber and UF membranes. Please provide your material, pore size, type of module, amount, and bulk requirement, and we will provide you with suggestions, hollow fiber membrane prices, and wholesale prices.