UNA-620AB Cooling water purification ultrafiltration membrane Asahi Kasei Microza Equivalent

Product introduction

LEFILTER proudly presents the UNA-620AB Cooling Water Purification Ultrafiltration Membrane, a high-performance solution specifically designed to meet the stringent requirements of industrial cooling water treatment systems. Engineered as an equivalent to the renowned Asahi Kasei Microza membranes, this advanced filtration module offers reliable separation performance, superior membrane integrity, and consistent quality—all essential for safeguarding cooling circuits and extending the operational lifespan of industrial equipment. With precise manufacturing and rigorous quality control, LEFILTER’s ultrafiltration technology provides an efficient barrier against suspended solids, bacteria, colloids, and organic contaminants, making it an indispensable component for modern cooling water purification processes.

Product Features and Specifications

• Membrane Type: Hollow Fiber Ultrafiltration (PVDF material)

• Nominal Pore Size: 0.03 µm

• Effective Membrane Area: 52 m²

• Fiber Inner/Outer Diameter: 0.8 mm / 1.5 mm

• Filtration Mode: Outside-in flow configuration

• Operating Temperature Range: 5°C – 45°C

• Operating pH Range: 2 – 10 (Cleaning range up to pH 12)

• Maximum Operating Pressure: 0.3 MPa

• Recommended Transmembrane Pressure (TMP): 0.05 – 0.15 MPa

• Backwash Pressure: ≤ 0.3 MPa

• Chemical Cleaning Options: Acid, alkali, sodium hypochlorite compatible

• Typical Water Recovery Rate: ≥ 90% under designed operation

With its outside-in filtration mechanism, the UNA-620AB ensures maximum contaminant removal efficiency while maintaining high permeability and low fouling tendencies. The durable PVDF hollow fiber construction resists mechanical stress and harsh chemical exposure, ensuring long-term performance with minimal maintenance requirements.

Application Fields

The UNA-620AB Cooling Water Purification Ultrafiltration Membrane is versatile and well-suited for a broad range of industrial applications, especially where high-purity cooling water is critical to equipment protection and system reliability. Typical applications include:

• Industrial Cooling Towers — Enhancing cooling efficiency and minimizing biofouling risks by continuously removing suspended solids, biofilms, and microbial contamination.

• HVAC Cooling Systems — Maintaining clean water circulation in commercial building chillers, ensuring energy-efficient operation and extended system life.

• Power Plant Cooling Circuits — Safeguarding heat exchangers and turbines from particulate-induced scaling and corrosion by delivering consistently clean cooling water.

• Chemical and Petrochemical Plants — Providing a dependable pre-treatment solution before cooling systems, helping to maintain plant efficiency and reduce chemical dosing.

• Steel and Metallurgical Industry — Supporting closed-loop cooling systems by filtering out process-related impurities, thus reducing downtime and maintenance costs.

By deploying the UNA-620AB membrane in these sectors, industries can achieve better control over water quality, reduce operational risks, and contribute to sustainable water resource management.

FAQ

Q: Can the UNA-620AB membrane operate in systems with fluctuating water qualities?

A: Yes. The membrane is designed with robust fouling resistance and can handle variations in feed water quality commonly seen in industrial cooling water systems, provided standard pre-treatment guidelines are followed.

Q: How often does the UNA-620AB require chemical cleaning?

A: Cleaning frequency depends on operating conditions and feed water characteristics. Typically, chemical cleaning is recommended when the transmembrane pressure rises significantly or flux declines notably. Scheduled maintenance protocols can help optimize cleaning intervals.