Ordinary brackish RO membrane cannot withstand 32000ppm high-salinity seawater and maximum 800psi working pressure, which will cause separation layer rupture and rapid flux attenuation after short-term operation, failing to produce qualified drinking water in single-stage filtration. Our self-developed LF-SW seawater desalination RO membrane adopts fully reinforced spiral winding structure and high-pressure resistant polyamide separation layer, supporting continuous operation under maximum 800psi pressure, delivering stable 99.7 salt rejection rate to directly convert raw seawater into compliant fresh water without secondary concentration treatment. Thickened hollow fiber avoids fiber breakage under long-term high-pressure impact, and anti-scaling surface coating slows sodium chloride crystal accumulation on membrane surface.
Complete LF-SW seawater RO specifications and supporting marine PVDF UF membrane pretreatment modules are collected in our water filter element.
Core Product Parameters & Series
1. LF-SW1-2521: 1.3㎡ area, daily yield 0.9m³, salt rejection ≥99.5%
2. LF-SW1-4021: 3.3㎡ area, daily yield 2.8m³, salt rejection ≥99.7%
3. LF-SW1-4040: 8.8㎡ area, daily yield 7.2m³, salt rejection ≥99.7%
4. LF-SW2-8040: 37.2㎡ area, daily yield 31.0m³, salt rejection ≥99.7%
5. LF-SW2-8040-PRO: 37.2㎡ area, daily yield 34.0m³, salt rejection ≥99.6%
Test standard: 800psi pressure, 32000ppm NaCl seawater, temperature 25℃, single element recovery 8%
Main Application Scenarios
1. Cargo ship and yacht onboard compact seawater desalination unit
2. Remote coastal island resident centralized fresh water supply station
3. Offshore oil & gas platform domestic water treatment system
4. Marine aquaculture factory circulating water purification equipment
5. High-salinity underground salt well water desalination project
6. Coastal resort integrated water supply and treatment equipment
Key Performance Advantages
1. Fully reinforced winding structure support maximum 800psi continuous operating pressure
2. Stable 99.7 salt rejection across full 10000–32000ppm seawater salinity range
3. Thickened fiber structure prevents rupture under long-term high-pressure impact
4. Special anti-crystallization coating slows salt scale accumulation effectively
5. Full size range from mini 2521 to industrial 8040 for all desalination tonnage
6. Matched multi-stage PVDF UF membrane removes marine sediment and plankton
All seawater systems must equip multi-media filter + activated carbon + PVDF ultrafiltration multi-stage pretreatment to protect SW RO membrane from scratch damage caused marine impurities. Our engineers provide one-stop full-process design for island and marine desalination EPC projects.
If you are interested in our membrane solutions, please contact us.
