Product Introduction
The HFU-2020AN UF Module is a high-performance ultrafiltration (UF) membrane system engineered as a reliable equivalent to the Toray HFU-2020AN. Developed for robust industrial and municipal water treatment processes, this module ensures precision separation of suspended solids, bacteria, viruses, and other contaminants down to 0.03 μm. It is a top-tier choice for applications such as drinking water production, wastewater reclamation, seawater desalination pretreatment, and process water purification.
With advanced hollow fiber technology and chemical-resistant materials, the HFU-2020AN module combines durability, efficiency, and consistent performance, providing users with an economical and reliable alternative to the original Toray product.

Working Principle
The HFU-2020AN module operates on an outside-in hollow fiber ultrafiltration mechanism, offering a superior balance between high flux and contaminant rejection.
1. Feed Water Entry
Water enters from the outside of the hollow fibers, distributing evenly across the membrane surface.
2. Filtration Through Membrane
As water passes through the fiber walls, particles larger than the membrane's nominal pore size (~0.03 µm) are retained. This includes suspended solids, bacteria, protozoa, and some viruses.
3. Permeate Collection
Filtered water, known as permeate, flows through the lumen (inner channel) of the hollow fibers and is collected through the outlet.
4. Periodic Cleaning
The system is equipped to perform automatic backwash and air scouring cycles, minimizing fouling and maintaining performance. Periodic Chemical Cleaning in Place (CIP) extends membrane life and restores permeability.
This efficient mechanism ensures high filtration performance, long service life, and reduced operational costs.

Key Features
✅ Direct Toray Replacement
The HFU-2020AN is designed as a functional and dimensional equivalent of Toray’s model, allowing for easy retrofitting and replacement without modifying the existing system design.
✅ Advanced Hollow Fiber Design
It utilizes ultra-durable fibers made from PVDF (polyvinylidene fluoride) or PES (polyethersulfone) with high chemical and mechanical resistance.
✅ High Contaminant Rejection
The module effectively removes >99.99% of bacteria and >90% of colloidal matter, making it suitable for high-purity water requirements.
✅ Chemical Compatibility
The membrane withstands a wide pH range (2–12 for cleaning) and oxidizing agents, enabling aggressive cleaning regimes when needed.
✅ Low Energy Consumption
Operating at low transmembrane pressures (0.1–0.3 MPa), it reduces pumping energy and operational expenses.
✅ Robust Module Housing
Encased in corrosion-resistant ABS or PVC material, the module withstands demanding environmental conditions.
✅ Compact & Modular Design
Its modular structure allows for parallel installation, ensuring scalability for varying flow rates and project sizes.

Technical Parameters
Parameter | Value |
Model | HFU-2020AN UF Module |
Equivalent To | Toray HFU-2020AN |
Membrane Type | Hollow Fiber |
Filtration Mode | Outside-In |
Membrane Material | PVDF / PES |
Nominal Pore Size | 0.03 µm |
Effective Membrane Area | ~130 m² |
Operating Temperature Range | 5 – 45 °C |
Operating pH Range | 4 – 10 (Cleaning: 2 – 12) |
Max Operating Pressure | 0.4 MPa |
Transmembrane Pressure (TMP) | 0.1 – 0.3 MPa |
Backwash Interval | 30 – 60 minutes |
Air Scour Flow | 8 – 10 Nm³/h/module |
Module Length | ~2100 mm |
Outer Diameter | ~225 mm |
Housing Material | ABS / PVC |
Expected Service Life | 5 – 7 years |
Connection Type | Flanged or Victaulic |
Certifications | ISO 9001, NSF/ANSI 61 |
Applications
1. Municipal Drinking Water
Removes turbidity, bacteria, and other particulates, ensuring compliance with potable water standards.
2. Industrial Wastewater Reuse
Acts as a polishing step to reclaim treated wastewater for industrial reuse, reducing water demand and costs.
3. Desalination Pretreatment
Protects reverse osmosis membranes by removing particulates and reducing SDI, enhancing system longevity.
4. Process Water Purification
Used in semiconductor, pharmaceutical, and food industries to supply high-purity water for sensitive operations.
5. Cooling Tower & Boiler Feed
Prevents fouling, scaling, and microbial growth in industrial utility systems by delivering high-quality feedwater.
6. Chemical & Petrochemical
Ensures removal of fine solids and emulsions from process water, improving downstream efficiency.

FAQ
1. Can this module directly replace Toray HFU-2020AN?
Yes, it is designed to be a direct equivalent with the same hydraulic, structural, and connection parameters.
2. What is the filtration efficiency?
It removes >99.99% of bacteria and high levels of colloids, suspended solids, and protozoa.
3. What cleaning methods are supported?
It supports automatic backwashing, air scouring, and CIP (chemical cleaning) for thorough maintenance.
4. What is the membrane made of?
The membrane is typically made of PVDF or PES, both known for their chemical and thermal resistance.
5. What is the average service life?
With proper cleaning and operating conditions, the average service life is 5–7 years.
6. Is this module suitable for seawater pretreatment?
Yes, it is widely used in seawater reverse osmosis (SWRO) pretreatment systems.
7. What chemicals can be used for cleaning?
Standard alkaline and acid cleaners, as well as disinfectants like sodium hypochlorite, can be used within the recommended pH range.
8. Can it be installed in existing UF systems?
Yes. As a Toray equivalent, the module fits into existing systems with little to no modification.

Conclusion
The HFU-2020AN UF Module offers a powerful alternative to the Toray HFU-2020AN, delivering high efficiency, durability, and flexibility in various water treatment applications. Whether upgrading an aging system or building a new one, this membrane ensures reliable operation and superior performance under demanding conditions.
With its modular design, high contaminant rejection rate, and robust construction, the HFU-2020AN is an ideal choice for engineers and operators seeking proven technology at a competitive cost.