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Nanofiltration Membranes

Nanofiltration membranes represent a high-performance membrane material positioned between ultrafiltration and reverse osmosis membranes. They are primarily employed for the selective retention of multivalent ions, small organic molecules, colorants, and certain heavy metals. These membranes offer distinct advantages in complex processes such as salt-water separation, lithium extraction, and chemical concentration.

Application Scenarios

Highly Corrosive Wastewater Treatment
Organic Solvent Filtration
Heavy Metal Removal
Rare Earth Recycling

Technical Features

• Molecular weight retention range: 200–1000 Da

• Enables high-throughput separation at lower operating pressures

• High salt tolerance and strong contamination resistance, suitable for high-hardness water

• Performance Parameters (Recommended Configuration):

• Retention Rate (Ca²⁺, Mg²⁺, SO₄²⁻) ≥ 98%

• Operating Pressure: 3–7 bar

• Flux: 20–50 L/m²·h (specific to operating conditions)

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