Detailed Product Description
DOW FILMTEC RO MEMBRANE BW-30XFR400-34i
1. Salt Rejection : 99.65%
2.Operate pressure : 600 psig (41 bar)
3. Permeate : 11,500 GPD
4.8" x 40L RO membrane
- Effective and efficient cleaning of biofilm, organic compounds and scale, achieved through the widest pH cleaning range (pH 1 – 13), made possible by the most advanced DOW FILMTEC™ RO membrane sheet available today.
- Produces 10 percent more water compared to the BW30-400/34i or BW30-400/34i FR element at the same operating pressure and higher rejection, enabling lower capital expense for new systems, or increased water production in an existing system.
- Enhanced cleaning effectiveness, reducing the impact of fouling and through the use of an optimized 34 mil feed spacer.
- Reliable system integrity, resulting in reduced system operating costs with the iLEC™ technology (interlocking end-caps), minimizing the risk of o-ring leaks that can contribute to poor water quality.
Product Specifications
| Product |
Part Number |
Active area ft2 (m2) |
Feed spacer thickness (mil) |
Permeate flow rate
gpd (m3/d) |
Stabilized salt rejection (%) |
Minimum salt
rejection (%) |
| BW30XFR-400/34i |
315924 |
400 (37) |
34 |
11,500 (43) |
99.65 |
99.4 |
| Solute |
NH4+ |
NO3- |
SiO2 |
Boron |
| Typical rejection (%) |
98.8 |
98.2 |
99.8 |
80.0 |
Operating Limits:
- Membrane Type : Polyamide Thin-Film Composite
- Maximum Operating Temperaturea : 113F (45C)
- Maximum Operating Pressure : 600 psig (41 bar)
- Maximum Pressure Drop : 15 psig (1.0 bar)
- pH Range, Continuous Operationa : 2 - 11
- pH Range, Short-Term Cleaning (30 min.) : 1 - 13
- Maximum Feed Silt Density Index : SDI 5
- Free Chlorine Tolerancec : <0.1 ppm
a ) Maximum temperature for continuous operation above pH 10 is 95F (35C).
b ) Refer to Cleaning Guidelines in specification sheet 609-23010.
c ) Under certain conditions, the presence of free chlorine and other oxidizing agents will cause premature membrane failure. Since oxidation damage is not covered under warranty, Dow Water & Process Solutions recommends removing residual free chlorine by pretreatment prior to membrane exposure.
