Ultrafiltration (UF) is a pressure-driven membrane process that removes suspended solids, bacteria, viruses, and high-molecular-weight compounds.

How UF Works

Similar to microfiltration but with finer membrane pores (0.01-0.1 micron). UF removes colloids, proteins, and microorganisms while allowing salts and small molecules to pass.

Key Advantages

• Physical barrier to bacteria and viruses (>99.99% removal)
• Consistent effluent quality regardless of feed water variations
• No chemical disinfection by-products
• Compact footprint
• Easy operation and maintenance

Applications

• Drinking water treatment (surface water protection)
• Wastewater reuse
• Pre-treatment for RO systems
• Food and beverage clarification
• Pharmaceutical water preparation
• Metal finishing rinse water recovery

Hollow Fiber vs. Spiral Wound

Hollow Fiber UF

Self-contained modules with thousands of hollow fibers. Excellent for high-solids feed water. Backwashable for recovery.

Spiral Wound UF

Similar to RO but with looser membrane. Good for low-solids applications. Higher packing density.

Feiran EP UF Systems

We offer both hollow fiber and spiral wound UF systems for all applications.

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