The SpiroPure SP-SW8040 Seawater Desalination Industrial Reverse Osmosis Membrane Element 8 x 40 is a high quality, high salt rejection replacement membrane filter cartridge. SP-SW8040 offers an extremely high salt rejection rate, making it the perfect choice for treating sea water and other high sodium applications.
Sea Water Desalination RO Membrane and Recovery Specifications:
- Nominal Size: 8" x 40"
- Certification: NSF 61 certified
- Salt Rejection Rate: 99.7%
- Average Permeate ±15%: 9,000 GPD @ 800 PSI
- Feedwater NaCl: 32,000 ppm
- Fresh Water Recovery Rate: 8%
- Feed Spacer: 28 mm
- Maximum Recommended NaCl: <40,000 ppm
- Maximum Operating Pressure 1,200 PSI
SP-SW8040 High Rejection Seawater Filtration Membrane common applications:
- Seawater desalination
- High salinity feed water
- Cruise ship ocean water filtration
- Desalination plants
- Industrial wastewater
- Municipal reclaimed water
- High recovery RO systems
SW salt water/seawater membrane compatible model numbers:
- SE1-8040
- Dupont Filmtec SW30XLE-400
- Hydranautics Nitto SWC5-LD
- LG Chem LG SW 400 R
- Toray TM820V-400
Additional Information
Seawater Membranes Are Shipped Wet
An important industry practice for seawater desalination RO membranes is to have them "shipped wet." After being tested to industry standards, our membranes are preserved for protection during shipping and for future use. The preservative is food-grade, and is found within the membrane itself and not in the air-tight packaging. The preservative creates a moist environment for the filter media, allowing the permeability and performance to be maintained by preventing biological growth during storage as well as providing a longer shelf-life of one-year from the manufacturing date printed on the package.
The sea water membrane price compared to other SpiroPure 8040 RO membrane elements reflects the specialized composite polyamide for high-pressure environments.
FAQs on SP-SW8040
What is the salt rejection rate of the SP-SW84040 seawater membrane?
The SpiroPure 8040 seawater desalination element has a salt rejection test performance rate of 99.7%. The seawater desalination spiral is configured to withstand high pressure environments for excellent salt rejection from high NaCl feedwater up to 40,000 ppm. Real-world results will vary from lab tests based on water specifications and system operation.
Is 8040 on an RO membrane the same thing as 8” x 40”?
Yes! The number 8040 is shorthand for the membrane’s physical dimensions. It combines the nominal diameter (8.0 inches) with the nominal length (40 inches) into a universal model number. By comparison, smaller size RO membranes like the 2.5” by 21” model would be listed as 2521.
What operating pressure does a 8040 8” x 80” seawater RO membrane require?
For optimal salt rejection and permeate flow, saltwater filtration membranes including the 8040 size operate at around 800 psi based on feedwater NaCl of 32,000 ppm and other specific lab conditions. Real world operating pressure can vary based on water quality, temperature, pH and other specifications. The 8040 seawater replacement has a maximum applied pressure of 1,200 psi.
Which membranes can the SP-SW8040 replace?
SpiroPure’s SP-SW8040 seawater desalination membrane is a compatible replacement for the Axeon SE1-8040, Dupont Filmtec SW30XLE-400
Hydranautics Nitto SWC5-LD, LG Chem LG SW 400 R, Toray TM820V-400 and related series of composite polyamide 4040 seawater filters.
How long does a large format 8040 RO membrane typically last?
Most large format RO membranes, including the SP-SW8040, will last 2 to 4 or 5 years depending on feed water quality, usage volume, and pre-filtration. In optimal conditions and with good maintenance, 8040 seawater membranes can last several years even with high pressure stress, biofouling, and scaling.
How much does the SpiroPure SP-SW8040 cost?
The SpiroPure SP-SW040 is priced to offer seawater desalination and other high-pressure RO system operators replacement membranes at a lower cost than brand name elements. The cost relative to other 8040 membranes reflects its specialized composite polyamide construction built for high-salinity seawater desalination. See this page for current price savings compared to brand-name equivalents.
