E-MEM XLP 8040 Industrial RO Membrane
BW (Brackish Water) membrane is an aromatic polyamide composite membrane element for desalting brackish Water developed by Hangzhou E-MEM Environmental Technology co., LTD.
nBW has the characteristics of low operating pressure, high flux, and high rejection rate. It has a high removal rate for dissolved salts, TOC, SiO2, and other substances, especially for the preparation of high purity water in the electronic and power industries.
- Estimated Delivery : Up to 4 business days
- Free Shipping & Returns : On all orders over $200
E-MEM 8040 Industrial RO Membrane – High-Flux 8″×40″ Element
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The E-MEM 8040 Industrial RO Membrane is a premium aromatic polyamide composite element designed for high-performance industrial and commercial water systems. It offers exceptionally high flux and salt-rejection while operating at lower pressure requirements. It’s built to treat brackish water and municipal sources with conductivity and “dissolved solids” levels up to ~8000 ppm.
Because it’s designed for durability and efficiency, it helps reduce pump and energy costs while delivering consistent permeate quality.
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Key Features
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- High Salt Rejection: Delivers ≥99% salt rejection under specified conditions.
- Low Pressure Requirement: Cuts operating cost thanks to lower feed-pressure demand—helping system economy.
- Large Active Area: Enables higher daily output from each element; suitable for industrial scale up.
- Broad Water Source Compatibility: Suitable for surface water, groundwater, municipal supply and brackish feed up to 8 000 ppm TDS.
- Robust Operating Limits: Maximum feed-pressure ≈4.14 MPa (600 psi), max feed-temperature ~45 °C, free-chlorine <0.1 ppm, SDI ≤ 5.
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Technical Specifications
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- Membrane size: 8″ diameter × 40″ length (8040)
- Typical active area: ~37 m² (400 ft²) for model 8040.
- Max operating pressure: 600 psi (~4.14 MPa)
- Max feed water temperature: 45 °C
- Max feed SDI: 5
- Feed free chlorine maximum: <0.1 ppm
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Why Choose the E-MEM 8040 Industrial RO Membrane?
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If you oversee a commercial or industrial water-treatment system, the E-MEM 8040 offers strong performance with cost-effective operation. Because it works at lower pressure while maintaining high flux and rejection, you’ll benefit from lower pump and infrastructure costs. In addition, the wide source-water compatibility means you can deploy it in many settings—from municipal feed, borehole water, to brackish water reuse. Moreover, its large area and robust build reduce downtime and extend service intervals.
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Installation & Maintenance Tips
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- Ensure feed water meets pre-treatment requirements: SDI ≤ 5, free-chlorine <0.1 ppm.
- On initial startup, flush new elements at low pressure for ~15-25 minutes, then at full design pressure for ~60-90 minutes.
- Monitor differential pressure, permeate conductivity, and flow rate—rising values may indicate fouling or scaling.
- Clean the membrane as per the manufacturer’s chemical-cleaning guidance (pH and temperature limits).
- Store spare elements wet or in 1% sodium bisulfite solution if unused for an extended period.
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Shipping policy
At our Company, we understand the importance of timely delivery. We offer a variety of shipping options to suit your needs, including standard, expedited, and express shipping. Our dedicated team works diligently to process and dispatch your orders promptly, aiming to deliver them to your doorstep within the estimated timeframe.
We strive to provide fast and reliable shipping to our customers. Here\\\’s everything you need to know about our shipping process:
- Dispatch: Within 24 Hours
- Free shipping across all products on a minimum purchase of $99.
- International delivery time 5 to 7 business days
- Cash on delivery might be available
- Easy 30 days returns and exchanges
Please note that delivery times are estimates and may vary depending on factors such as product availability, destination, and carrier delay
Returns policy
We want you to be completely satisfied with your purchase from our website. If for any reason you are not entirely happy with your order, we\\\’re here to help. Certain exclusions and conditions may apply, so we encourage you to review our detailed return policy for more information. Rest assured, our goal is to ensure your complete satisfaction with every purchase you make from our website
- Returned items must be unused, undamaged, and in the same condition as received.
- Original tags, labels, and packaging must be intact and included with the returned item.
- Proof of purchase, such as your order confirmation or receipt, is required for all returns.







