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d Filmtec BW30 400 Brackish Water Membrane Reverse Osmosis Filter Indonesia  large2  
Filmtec BW30-400
Code : BW30-400 PFI

Deskripsi :

Filmtec BW30-400

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·         Description : BW30-400

·         Permeate Flow Rate gpd (l/h) : 10500 (40.0)

·         Stabilized Salt Rejection : 99.5 %

·         Applied Pressure psig(bar) :  225 (15.5)


Permeate flow and salt rejection based on the following test conditions: 2,000 ppm NaCl, 77°F (25°C), 8-15% recovery and the specified applied pressure.

Permeate flows for individual elements may vary +/-15%.

Sales specifications may vary as design revisions take place.

Active area guaranteed +/-3%. Active area as stated by Dow Water & Process Solutions is not comparable to nominal membrane area often stated by some manufacturers.

Measurement method described in Form No. 609-00434.

Specific solute stabilized rejections based on the following standard test conditions:  2,000 ppm NaCl, 77°F (25°C), 8-15% recovery and the specified applied pressure.


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 DOW™ FILMTEC™ Reverse Osmosis and Nanofiltration Three-Year Prorated Limited Warranty (Form No. 609-35010) 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 drop across an entire pressure vessel (housing) is 50 psi (3.4 bar).

Avoid static permeate-side backpressure at all times.


The DOW FILMTEC™ BW30-400/34i element is the ultimate element for durable, high-rejection, high-productivity performance in high fouling or challenging feed conditions, enabling trouble-free operation and a low cost of water.
Features a 34 mil feed spacer to lessen the impact of fouling on pressure drop across a vessel and enhance cleaning effectiveness.

Offers the proven performance and high productivity of the DOW FILMTEC BW30 membrane

Delivers a lower total cost of water by enabling lower capital and/or operating expenses compared to 365 sq. ft. elements.

Includes iLEC™ interlocking endcaps, which reduce system operating costs and the risk of o-ring leaks that can cause poor water quality.


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