BW30-400 DOW membrane

　　BW30-400 DOW membrane

　　Nominal and effective membrane area of Dow FILMTECBW30-400 membrane component is 400 square feet, under standard test condition, the output is 40m3/d(10,500 gpd), the outer diameter is same to other components of 8 inches. The output is improved by increasing membrane area, not increasing membrane flux and water supply pressure, therefore, we can keep the low sludge block rate, and then the high output can be ensured, and the service life of membrane is prolonged. The operation pressure is low, and then the economy of system operation is increased, the BW30-400 increased membrane area can make the RO system of new design use fewer components, then, the installation cost can be saved, the system is more compact.

　　Product standards

　　Product nameProduct No.Effective membrane area ft2 (m2 )Output

　　gpd (m3 /d)Stable desalinization Cl - %

　　BW30 - 40098650400 (37)10,500 (40)99.5

　　1. Output and desalinization are based on the test conditions: 2000ppm NaCl, 225psi(1.55MPa), 25℃, PH=8, 15%recovery rate.

　　2. Output of single component may change, but it won’t be lower than 7% of the above.

　　3. Minimum desalinization of single component can reach 98.0%.

　　4. When the product has been replaced, the product standards may have a change.

　　Operation limit value

　　Membrane type........................................polyamide compound membrane

　　Maximum operation temperature............................................45℃(113oF)

　　Maximum operation pressure...............................................600psi(41bar)

　　Maximum pressure difference...............................................15psi(1.0bar)

　　PH range of continuous operation a.....................................................2-11

　　PH range of short-time cleaning(30min) b...........................................1-12

　　Maximum water supply flow..............................................85gpm(19m3/h)

　　Maximum water supply silting density index.....................................SDI5

　　Maximum water supply turbidity.....................................................1NTU

　　Tolerance of free chlorine c........................................................... <0.1ppm

　　PH of a is more than 10, the maximum temperature of continuous operation is 35℃(95oF); c under some conditions, there are free chlorine and other oxidizing agents in feedwater, which will destroy the membrane seriously, and the oxidation destroy is not belonging to the product quality warranty terms, FilmTec suggests that the residual and free chlorine should be removed in the pretreatment.

　　Product nameRecovery rate of single component %Overall dimensions-------inch(millimeter)

　　ABC

　　BW30 - 4001540.0 (1016)1.125 (29)7.9 (201)

　　1. Recovery rate is the percentage that water flow of product divides the water supply flow. One inch is equal to 25.4 millimeters.

　　2.when we design multi-component system, we can read FilmTec design guide, according to water supply types, we will conform to the relative recovery limit value.

　　3. There will be a pressure container of nominal inner diameter of 8 inches in the component.