info@best-filtration.com
MBR Membrane
Reverse Osmosis Membrane
Residential Ro Membrane
UF Membrane
Water Treatment Plant
Residential Ro Machine
Brackish Ro System
Sea water system/SW RO plant
Bag Filter
Cartridge Filter
Commercial Water Filtration System
Membrane Cleaning System(CIP)
Consumables Accessories
BMSW-2521 Equivalent of Filmtec SW2521
The BMSW-2521 is a seawater desalination membrane independently developed and manufactured by Besta Membrane. It is an equivalent replacement for the Filmtec SW2521, offering the same performance at a more competitive price.
Sea Water Desalination RO Membrane Elements – SW Series
SW series of sea water aromatic polyamide RO element developed by BM for seawater desalination. This series of elements have the characteristics of low operating pressure, low equipment investment, good desalination performance and stability. Among them, the BM-SW-4040 have the highest desalination rate of 99.8%, which ensure that drinking water can be produced from seawater through one pass RO system.
SW series membrane elements are generally suitable for the treatment of seawater and brackish water with high concentration. It can be used for seawater desalination, desalination of brackish water with high concentration, boiler replenishment water in power plants, wastewater reuse, concentration and recovery of high value-added substances such as food and pharmaceuticals, etc.
Module Active Membrane Area Average Permeate Stable rejection Boron removal
ft2(m2) GPD（m³/d） Rate（％） Rate（％）
BM-SW-2521 12（1.1） 250（0.95） 99.5 92
Test conditions：
Testing pressure 800Psi（5.5Mpa）
Testing solution temperature 25℃
Concentration of testing solution 32800ppm Nacl，5ppm B.
pH value of testing solution 8.0
Recovery rate of Single element 4%
Feed spacer： 28mil
Operation limits & conditions：
Max. Working Pressure 1000psi（6.90Mpa）
Max. Temperature of Feed water 45℃
Max. Feed water SDI15  5.0
Max. Feed water Turbidity 1.0NTU
pH Range of Feed water during Continuous Operation 2～11
pH Range of Feed water during Chemical Cleaning 2～12
Residual Chlorine Concentration of Feed Water  ＜0.1ppm
| A/mm(inch) | B/mm(inch) | C/mm(inch) D/mm(inch) |
| 533.4(21) | 61.0(2.4) | 19.1(0.75) 30.2(1.19) |
