Introduction
The RE4040 – BLR Reverse Osmosis Membrane is engineered to meet the escalating global demand for high – purity water. It actively removes up to 99.7% of dissolved salts, heavy metals, and organic contaminants from feed water, setting a new benchmark for desalination efficiency. Designed with advanced Thin – Film Composite (TFC) technology, this membrane combines superior salt rejection with extended service life, making it ideal for industrial, municipal, and commercial applications. Its compact 4040 format fits standard RO systems, enabling easy integration into new or existing water treatment plants.
Features
- Active High – Efficiency Desalination: Delivers 99.7% salt rejection at standard conditions
- Energy – Saving Design: Operates at 0.5 – 1.0 kWh/m³, 15% more efficient than traditional membranes
- Chemically Resistant: Withstands pH 2 – 11 and chlorine exposure up to 1 ppm
- Low Fouling Potential: Hydrophilic surface reduces scaling and biofilm formation

Suggested Operating Conditions
| Parameter | Value | Notes |
|---|---|---|
| Temperature | 5 – 45°C | Optimal performance range |
| Max Pressure | 4.1 MPa (600 psi) | Maximum allowable pressure |
| pH Range | 2 – 11 | Continuous operation range |
| Feed Turbidity | ≤ 1 NTU | Pre – treatment recommended |
| SDI | ≤ 5 | Silt Density Index limit |
Applications
Industrial Water Treatment
- Semiconductor Manufacturing: Actively purifies water for wafer cleaning
- Power Generation: Treats boiler feedwater to prevent scale formation
- Chemical Processing: Ensures product purity in reactor feed streams
Municipal Water Supply
- Brackish Water Desalination: Converts high – TDS water to potable quality
- Wastewater Reuse: Processes secondary effluent for non – potable applications
- Emergency Response: Provides clean water in disaster relief scenarios
Commercial & Residential
- Beverage Production: Filters water for bottled drinks and brewing
- Hotels & Resorts: Supplies purified water for pools and spas
- Agriculture: Treats irrigation water to reduce soil salinity

Technical Data
| Parameter | Value |
|---|---|
| Membrane Area | 80 ft² (7.43 m²) |
| Permeate Flow Rate | 7,500 gpd (28.4 m³/day) |
| Membrane Material | Thin – Film Composite |
| Element Dimensions | 40″ × 4″ (1016 mm × 102 mm) |
| Weight | 15 kg |
Other model
| Dow | Hydranautics | Toray | CSM | GE | VONTRON |
|---|---|---|---|---|---|
| BW30XFR-400/34 | ESPA1-4040 | TMH20A-400C | RE4040-BLR | AG8040F-400FR,34 | SW4040HR |
| BW30FR-400/34 | CPA2-4040 | TMH20A-440C | RE8040-BE | AG8040F-400 | ULP21-8040 |
| BW30-400/34 | PA3-LD | TMG20-370C | RE8040-BLN | AG8040F-400LF | ULP2012 |
| BW30-400/34i | SWC5-LD | TMG20-400C | RE8040-BLR | AG4040FM | ULP1812 |
| BW30-400 | ESPA2-4040 | TMG20-440C | RE4040-BE | AG8040F-365 | ULP32-8040 |
| BW30-400IG | YQS-4040 | TMG20D-400 | RE4040-BLN | AG8040N-400 | ULP31-4040 |
| BW30-365 | ESPA2-7 | TMG20D-440 | L-RO-4040 | AK4040FM | ULP22-8040 |
| BW30XFR-400/34i | CPA6-LD | TM720-370 | RE1812-HR50 | AG4040F | ULP21-4040 |
| BW30FR-400/34i | ESPA2 MAX | TM720-400 | RE1812-HR75 | ULP2012 | |
| BW30HRLE-440 | LFC3-LD | TM720-440 | RE4040-TE | ||
| BW30HRLE-440i | ESPA2 | TM720C-440 | RE2521-TE | ||
| XFRLE-400/34i | PR0C10 | TM720D-370 | RE2540-TE | ||
| SW30HRLE-400 | PR0C20 | TM720D-400 | RE4040-TE | ||
| BW30FR-400/34i | ESPA2-4040 | TM720D-440 | RE4040-TL | ||
| BW30XFRLE-400/34i | ESPA4-4040 | TML20N-400 | ETC. | ||
| BW30LCHR-4040 | CPA3-LD-8040 | TML20DA400 | |||
| BW30-4040 | SWC5-8040 | TML20D-370 | |||
| LCLE-4040 | YQS-8040 | TML20D-400 | |||
| BW30HRLE-4040 | ESPA2-8040 | TMH10A | |||
| SW30-4040 | ESNA1-LF-LD | TMG10D | |||
| BW30HR-380 | ESNA1-K1 | TM710D | |||
| SFP-2880 | CPA3-LD | TML10D |
Conclusion
The RE4040 – BLR Reverse Osmosis Membrane redefines desalination efficiency with its advanced TFC technology, high salt rejection, and energy – saving design. Its robust construction and wide operating range make it suitable for diverse applications, from industrial processes to municipal water supply. By removing contaminants and delivering consistent water quality, the RE4040 – BLR helps operators reduce maintenance costs, improve system reliability, and meet sustainability goals. Backed by rigorous testing and engineering excellence, this membrane is the optimal choice for organizations seeking a high – performance desalination solution.