UNA-620A Paper mill ultrafiltration membrane Asahi Kasei Microza Equivalent

Product introduction

LEFILTER proudly delivers the UNA-620A Paper Mill Ultrafiltration Membrane, a high-performance solution designed as a functional equivalent to the Asahi Kasei Microza series, tailored specifically for the pulp and paper industry. Developed to address the critical water treatment needs in paper production, this membrane ensures efficient separation of suspended solids, colloidal substances, and microorganisms from process and wastewater streams, enhancing water reuse and minimizing environmental impact. LEFILTER is dedicated to providing innovative filtration technologies that support sustainable production and cost-effective water management in industrial applications.

The UNA-620A employs advanced PVDF hollow fiber membrane technology, ensuring outstanding chemical resistance, mechanical robustness, and low fouling characteristics. This design enables stable filtration operation even in challenging conditions typical of paper mill processes, such as high organic load, varying particle concentrations, and fluctuating chemical environments. Its reliable performance supports critical applications including white water recovery, effluent treatment, and pretreatment for advanced water reuse systems.

Technical Specifications

• Membrane Composition: PVDF hollow fiber

• Nominal Pore Size: 0.03 μm

• Effective Membrane Area: 60 m²

• Outer Fiber Diameter: 1.3 mm

• Inner Fiber Diameter: 0.7 mm

• Filtration Mechanism: Outside-in filtration

• Recommended Operating Pressure: 0.1 – 0.3 MPa

• Maximum Backwash Pressure: 0.3 MPa

• Operating pH Range: 2 – 10

• Maximum Continuous Operating Temperature: 45°C

• Chemical Cleaning pH Range: 1.5 – 12

• Recommended Filtration Flux: 30 – 80 L/m²·h (subject to feed water quality)

Application Areas

The UNA-620A Paper Mill Ultrafiltration Membrane is widely applied in key water treatment stages within the pulp and paper sector, including:

• White Water Filtration and Reuse in Paper Production Lines

• Effluent Polishing Prior to Discharge or Recycling

• Pretreatment for Reverse Osmosis in Water Reclamation Systems

• Process Water Purification for Closed-loop Systems

• Reduction of Suspended Solids in Wastewater Treatment Plants

By integrating the UNA-620A into their water treatment processes, paper mills can significantly reduce freshwater consumption, improve effluent quality, and enhance overall process efficiency. The membrane's durability and consistent performance make it a cost-effective solution for long-term operation in demanding industrial environments.

FAQ

Q: Can the UNA-620A membrane be used in high-load wastewater from paper mills?

A: Yes, the UNA-620A is designed to handle high suspended solids and organic loads typical in paper mill effluent, providing stable separation and reliable operation under such conditions.

Q: Is the UNA-620A membrane compatible with existing Microza ultrafiltration systems?

A: The UNA-620A is dimensionally and functionally compatible with Asahi Kasei Microza modules, allowing for direct replacement without system modifications.