Description

The SW21-4040 Reverse Osmosis Membrane is a high-performance seawater thin-film composite (TFC) membrane designed for the desalination of high Total Dissolved Solids (TDS) water, including seawater and highly saline brackish water. Engineered to deliver excellent salt rejection and reliable water production under high-pressure operating conditions, it is ideal for demanding commercial and industrial water treatment applications.

The SW21-4040 membrane is widely used for producing bottled drinking water, industrial process water, high-purity water, boiler feed water, and purified water for food, beverage, and pharmaceutical industries. It is also suitable for wastewater reuse, water recovery, material concentration, purification, and refining applications where high desalination performance is required.

Features:

• High-performance seawater Reverse Osmosis membrane.
• Excellent desalination for high TDS feed water.
• High salt rejection for superior water quality.
• High permeate flow under high-pressure operation.
• Suitable for seawater and highly saline brackish water.
• Thin-film composite (TFC) membrane construction.
• Compatible with standard 4040 membrane housings.
• Reliable long-term performance.
• Designed for commercial and industrial RO systems.
• Excellent chemical cleaning resistance.

Specifications:

• Model: SW21-4040.
• Membrane Type: Seawater thin-film composite (TFC).
• Active Membrane Area: 7.9 m².
• Average Permeate Flow: 1,400 GPD (5.3 m³/day).
• Stable Salt Rejection: 99.5%.
• Minimum Salt Rejection: 99.2%.

Standard Test Conditions:

• Test Pressure: 800 psi (5.5 MPa).
• Feed Water Temperature: 25°C.
• Test Solution: 32,800 ppm NaCl.
• Feed Water pH: 7.5.
• Single Element Recovery: 15%.

Operating Limits:

• Maximum Operating Pressure: 1,000 psi (6.9 MPa).
• Maximum Feed Water Flow: 1.6 GPM (360 L/h).
• Maximum Feed Water Temperature: 45°C.
• Maximum Feed Water SDI: 5.
• Maximum Free Chlorine: <0.1 ppm.
• Continuous Operating pH Range: 3 to 10.
• Chemical Cleaning pH Range: 2 to 12.
• Maximum Pressure Drop Per Membrane Element: 15 psi (0.1 MPa).

Applications:

• Seawater desalination.
• High TDS brackish water treatment.
• Bottled drinking water production.
• Commercial Reverse Osmosis systems.
• Industrial Reverse Osmosis systems.
• High-purity water production.
• Boiler feed water.
• Food and beverage processing.
• Wastewater reuse and recovery.
• Material concentration, purification, and refining processes.

Why Choose the SW21-4040 Reverse Osmosis Membrane?

• Specifically designed for high TDS and seawater desalination.
• Produces up to 1,400 gallons (5.3 m³) of purified water per day.
• High 99.5% stable salt rejection ensures excellent water quality.
• Operates reliably under high-pressure conditions.
• Ideal for commercial and industrial desalination systems.
• Suitable for bottled water, industrial process water, and high-purity water production.
• Excellent resistance to chemical cleaning extends membrane service life.
• Compatible with standard 4040 RO membrane pressure vessels.
• Delivers reliable performance for demanding water treatment applications.
• Helps reduce operating costs through efficient and consistent desalination performance.