LF-SWFR Anti-Fouling High Pressure Seawater RO Membrane For Coastal Desalination Plant

Coastal desalination plant operators face huge maintenance costs from frequent membrane scaling and organic fouling. Ordinary RO membrane without anti-fouling coating accumulates calcium carbonate and marine algae within 1–2 months, forcing monthly chemical cleaning that shortens the service life of Reverse Osmosis membrane element. LEFILTER LF-SWFR anti-fouling high-pressure RO membrane filter is tailor-made for full-strength 32000ppm seawater, different from conventional BW and ULP brackish water Reverse Osmosis membrane. The upgraded smooth hydrophilic coating of this RO membrane element reduces salt crystal and algae adhesion by over 60%, cutting cleaning frequency by half. Before seawater enters any RO membrane system, full set pre-treatment with UF membrane module and High Flow Filter is mandatory to intercept plankton and suspended solids, protecting the delicate Reverse Osmosis membrane filter. All SWFR series are classified under Water Filter Element category, while our oil & gas coalescer cartridge and natural gas filter solutions can be viewed at gas filter element.

Anti-Scaling Working Principle Of LF-SWFR RO Membrane Element

High-salinity raw seawater flows tangentially over LF-SWFR RO membrane surface under 5.52–8.28MPa high driving pressure. The smooth modified polyamide layer of this Reverse Osmosis membrane repels most salt crystals and marine organic matter, only allowing pure water molecules to penetrate into the central permeate tube to form drinking fresh water. Salt ions and algae are carried away continuously by concentrated brine flow, greatly slowing fouling buildup on RO membrane filter. Compared with standard seawater Reverse Osmosis membrane element, SWFR series extends membrane service cycle by 40% and reduces chemical agent consumption significantly.

Core Seawater Adaptation Technical Index

• Membrane Material: Thickened anti-fouling polyamide for RO membrane filter

• Stable Salt Rejection of Reverse Osmosis membrane: ≥99.7%

• Max Continuous Safe Pressure: 8.28MPa for full seawater

• Test Raw Water Salinity: 32000ppm NaCl seawater

• Matching Pre-treatment: All standard UF membrane module

Each LF-SWFR Reverse Osmosis membrane element completes 1000-hour high-salinity fouling aging test before delivery, compatible with all standard high-pressure seawater pressure vessels matched with High Flow Filter.

4 Cost-Saving Anti-Fouling Advantages

1 Marine Algae Anti-Adhesion Coating
Smooth surface of RO membrane element avoids algae biofilm growth in coastal seawater.

2 Ultra-High Salt Tolerance
Stable operation under full 32000ppm seawater unlike low-pressure Reverse Osmosis membrane.

3 50% Less Chemical Cleaning
Cut cleaning labor and chemical cost of RO membrane filter by half.

4 Long Service Cycle
40% longer service life than ordinary seawater RO membrane.

Application Scenarios

LF-SWFR RO membrane is core consumable for coastal large desalination plants, island fresh water equipment and offshore drilling platform pure water systems, matched with Ultrafiltration membrane module to form full seawater pretreatment & desalination solution.

Full LF-SWFR Series Complete Model List

LF-SW1-4040FR, LF-SW2-8040FR, LF-SW3-2540FR

Other Related Products

BW Standard Brackish Water RO Membrane

FAQ For Desalination Plant Engineers

Q1 What raw water fits LF-SWFR RO membrane filter?
A1 Exclusive for full-strength seawater and high-salinity brine over 30000ppm, not tap water Reverse Osmosis membrane element.

Q2 How much can anti-fouling coating reduce cleaning frequency?
A2 Extend cleaning cycle twice as long as ordinary seawater RO membrane.

Q3 Is UF membrane module mandatory before installation?
A3 Yes, seawater plankton will rapidly foul Reverse Osmosis membrane element without ultrafiltration pre-treatment.

Q4 Can SWFR replace standard SW membrane directly?
A2 Same outer dimension, can be installed into existing seawater pressure vessels without modification.