Description E-MEM 4040 Industrial RO Membrane – High-Flux 4″×40″ Element The E-MEM 4040 Industrial RO Membrane is a premium-grade aromatic polyamide composite element designed for large-scale water purification systems. It offers high water flux at lower operating pressures, making it both efficient and cost-effective.Typically used in industrial and commercial RO plants, this membrane supports applications such as boiler-feed water, bottled water production, surface and groundwater desalination, and more. Key Features High Salt Rejection: Delivers rejection rates up to 99.5% under test conditions (2000 ppm NaCl) for model BW-4040/4040 series. Extra Low Pressure Operation: Reduced feed pressure requirements compared to standard membranes—leading to lower pump energy and infrastructure cost. Large Active Area: Approximately 8.4 m² (≈90.4 ft²) membrane area in the 4040 size, supporting high production volumes. Wide Application Range: Suitable for surface water, municipal feed, groundwater, brackish water (salt content <8000 ppm), and industrial water purification. Robust Operating Conditions: Max operating pressure ≈4.14 MPa (600 psi), max feed water temperature up to 45 °C, feed free chlorine concentration <0.1 ppm. Technical Specifications Model: 4040 size (4″ diameter × 40″ length) Active Membrane Area: approx. 90.4 ft² (8.4 m²) Typical Permeate Flow: ~2400 GPD (≈9.1 m³/day) under 2000 ppm NaCl test condition for BW-4040. Max Operating Pressure: 4.14 MPa (600 psi) Max Feed Temperature: 45 °C Maximum Feed SDI (Silt Density Index): ≤ 5 Free Chlorine Concentration: <0.1 ppm recommended pH Range (Continuous Use): 3-10; (Cleaning): 2-12 Why Choose the E-MEM 4040 Industrial RO Membrane? If you manage a commercial or industrial water-treatment system, the E-MEM 4040 offers a standout balance of performance, efficiency, and cost-effectiveness. Because it operates at lower pressures while maintaining high flux and salt rejection, you incur lower pump energy and infrastructure costs. Moreover, its compatibility with a wide range of feed-water types—from municipal to low-salinity brackish—makes it flexible for many system designs. In addition, the large active area ensures robust production capacity, and you’ll benefit from reduced downtime and consistent water quality. Installation & Maintenance Tips Pre-treatment is key: Ensure feed water SDI ≤ 5 and free-chlorine <0.1 ppm. Start-up Flush: When new, flush the membrane at lower pressure for 15-25 minutes, then at full design pressure for 60-90 minutes—discharge the initial permeate/concentrate. Monitor differential pressure and permeate conductance: Increases in either may indicate fouling or scaling. Cleaning schedule: Clean based on manufacturer guidelines; use approved chemicals and check pH limits (2-12 for chemical cleaning). Storage of spare elements: Keep wet, or soak in 1.0% sodium bisulfite solution if prolonged storage is required.
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