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
High Desalination SW8040-400 Equal to SWC4
BMSW-8040-400-HR is a specially designed high desalination membrane element. Its exceptional desalination performance rivals Toray’s TM820K and Hydranautics’ SWC4-LD/Max, making it a cost-effective alternative to these brands.
SW series fouling-resistant and scaling-resistant aromatic polyamide composite membrane elements developed by Besta Membrane are designed for complex water quality. The SW series membrane elements use a special membrane preparation process, which gives them an extremely high sodium chloride desalination rate and boron rejection rate. This allows for a reduction in the cost of achieving the water quality required by WHO standards. Additionally, the products have a high degree of chemical cross-linking, enabling them to withstand more frequent chemical cleaning cycles and adapt to high pressure and high salinity environments.
SW series membrane elements are suitable for desalination of high-concentration seawater and brackish water desalination with high recovery systems. They are widely used in seawater desalination projects and can also be applied in reclaimed water reuse and zero discharge projects.
Module Active Membrane Area Average Permeate Stable rejection Min rejection Boron Removal
ft2(m2) GPD（m³/d） Rate（％） Rate（％） Rate（％)
SW-8040-400-HR 400（37.2） 6000（22.8） 99.85 99.70 93
Test conditions：
Testing pressure 800 Psi（5.5Mpa）
Testing solution temperature 25℃
Concentration of testing solution 32000ppm
pH value of testing solution 8.0
Recovery rate of Single element 8%
Feed spacer： 34mil
Operation limits & conditions：
Max. Working Pressure 1200psi（8.27Mpa）
Max. Temperature of Feed water 45℃
Max. Volume of Feed water 75gpm（17 m3/h）
Max. Feed water SDI15 5
Max. Feed water Turbidity 1.0NTU
pH Range of Feed water during Continuous Operation 2～11
pH Range of Feed water during Chemical Cleaning 1～13
Residual Chlorine Concentration of Feed Water& ＜0.1ppm
Max. Pressure Drop of Single Membrane Element 15psi（0.1Mpa）
Max. Pressure Drop of Single Pressure Vessel with Six elements 50psi（0.34Mpa）
