Our FILMTEC™ high rejection seawater reverse osmosis membrane elements (6,000 GPD) offer the highest NaCl and boron rejection rates to help customers meet World Health Organization (WHO) and other drinking water standards. Advanced membrane technology and automated fabrication allow these elements to deliver consistently high flow rates to meet the water demands of both sea and land-based desalinators. High rejection seawater membranes can withstand up to 1,200 psi operation without degradation in flow, salt rejection and physical appearance and their performance remains stable over many years, even under harsh operating conditions.
MEM-SW30XHR-400i
(6,000 GPD)
Very high NaCl and boron rejection with large surface area (400 ft²) to maximize productivity and enable accurate and predictable system design and operating flux.
Operating Limits
Membrane Type
Polyamide Thin-Film Composite
Maximum Operating Temperature
113°F (45°C)
Maximum Pressure Drop
13 psig (0.9 bar) for SW30XHR-400i & SW30XHR-440i.
15 psig (1.0 bar) for SW30HR-380.
pH Range, Continuous Operation
2-11
pH Range, Short-Term Cleaning
1-13
Maximum Feed Silt Density Index
SDI 5
Important Information
Proper start-up of reverse osmosis water treatment systems is essential to prepare the membranes for operating service and to prevent membrane damage due to overfeeding or hydraulic shock. Following the proper start-up sequence also helps ensure that system operating parameters conform to design specifications so that system water quality and productivity goals can be achieved.
Before initiating system start-up procedures, membrane pretreatment, loading of the membrane elements, instrument calibration and other system checks should be completed.
Please refer to the application information literature entitled “Start-Up Sequence” (Form No. 609-02077) for more information.
Operation Guidelines
Avoid any abrupt pressure or cross-flow variations on the spiral elements during start-up, shutdown, cleaning or other sequences to prevent possible membrane damage. During start-up, a gradual change from a standstill to operating state is recommended as follows:
Feed pressure should be increased gradually over a 30-60 second time frame.
Cross-flow velocity at set operating point should be achieved gradually over 15-20 seconds.
Permeate obtained from first hour of operation should be discarded.
General Information
Keep elements moist at all times after initial wetting.
If operating limits and guidelines given in this bulletin are not strictly followed, the limited warranty will be null and void.
To prevent biological growth during prolonged system shutdowns, it is recommended that membrane elements be immersed in a preservative solution.
The customer is fully responsible for the effects of incompatible chemicals and lubricants on elements.
Maximum pressure drops are 15 psi (1.0 bar) per element or 50 psi (3.4 bar) per multi-element pressure vessel (housing) whichever value is more limiting.
Avoid static permeate-side backpressure at all times.
Notice: The use of this product in and of itself does not necessarily guarantee the removal of cysts and pathogens from water. Effective cyst and pathogen reduction is dependent on the complete system design and on the operation and maintenance of the system.
About Filmtec
FILMTEC Corporation is the leading manufacture of reverse osmosis and nanofiltration membrane elements for industrial, municipal, commercial, and home drinking water treatment and purification, as well as for other specialty applications. The company was incorporated in 1977 and is headquartered in Minneapolis, Minnesota. FILMTEC Corporation is a subsidiary of The Dow Chemical Company and part of Dow's Water & Process Solutions business group.
