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XLP (Extra Low Pressure) series is an extremely low-pressure aromatic polyamide composite membrane element developed by Hangzhou E-MEM Environmental Technology Co., Ltd for surface water and groundwater desalination, which can achieve the same high-water flux and high desalination rate as the conventional low-pressure film under the condition of very low operating Pressure. Its operating pressure is about 1/2 of the operating pressure of conventional low-pressure composite membrane, so as to reduce the investment cost of related pumps, pipelines, containers, and other equipment and the operating cost of reverse osmosis system, and improve economic benefits.
XLP series membrane elements are suitable for the treatment of low-salt water sources with not high requirements for desalination rate, such as surface water, groundwater, tap water, and municipal water with salt content less than 1000ppm. Mainly used in various scales of pure water, boiler feed water, food processing, and other fields.
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Delivery and return
Delivery and return
Next day delivery in store
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Next day delivery
Orders before 6pm from Monday to Saturday (or before 1pm on Sunday) will be delivered Next working day (except Northern Ireland and Highlands). Orders placed after 6pm (after 1pm on Sunday) or for Northern Ireland and Highlands will be delivered in 2 working days.29 USD
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Shipping Information
SHIPPING
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Composition and care
Characteristics of wood :
- Hard, compact , fiberous and porous
- Good wood gives a rich, warm and beautiful surface.
Wood is used for the construction of:
- Floor, Furniture, Walls
- Incidental furnishing (lampshades, picture frames)
- Kitchen & restaurant ware
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.
