FR Series fouling resistant reverse osmosis membrane elements are engineered for demanding industrial water and wastewater applications where high organic load and scaling risks are present.
Featuring optimized surface chemistry and stable rejection performance, the FR Series helps reduce cleaning frequency and extend system service life.
FR Series - Fouling Resistant RO Membrane Elements
The FR Series is specifically developed for industrial water reuse, electroplating wastewater, textile dyeing, and other high-fouling environments where conventional RO membranes may experience rapid performance decline.
Through optimized membrane chemistry and enhanced surface smoothness, the FR Series delivers consistent permeate flux while maintaining strong salt rejection, making it suitable for continuous operation in complex feed water conditions.
Key Features
Typical Applications
Water Sources
• Lakes and river water
• Mine water
• Municipal reclaimed water
• Industrial wastewater
• RO concentrate (brine)
Industries & Systems
• Industrial process water production
• Wastewater reuse and recycling systems
• Zero Liquid Discharge (ZLD) pretreatment RO systems
• High-fouling industrial RO systems
Membrane Element Working Principle (RO)
Step 1 – Feed Water Inlet
High-fouling feed water with elevated organics, SDI, or suspended solids enters the FR membrane element under operating pressure.
Step 2 – Membrane Separation
The modified membrane surface reduces organic adhesion and particulate deposition while allowing water molecules to pass through.
Step 3 – Permeate Collection
Permeate is collected through the central tube with stable flux performance, even under fluctuating feed water conditions.
Step 4 – Concentrate Discharge
Rejected contaminants are discharged as concentrate, minimizing fouling accumulation on the membrane surface.
Step 5 – Continuous Operation
The fouling-resistant design supports longer cleaning intervals, reduced CIP frequency, and improved system stability.
Technical Specifications
Product Dimensions
| Dimensions | in. (mm) |
| A | 40 (1016) |
| B | 7.9 (201) |
| C | 1.05 (26.7) |
| Dimensions | in. (mm) |
| A | 40 (1016) |
| B | 3.9 (99.7) |
| C | 0.75 (19.1) |
| D | 1.05 (26.7) |
Product Parameters
The following performance data is based on standard testing conditions. Actual performance may vary depending on feed water quality and operating parameters.
| Model |
Permeate Flow |
Stable Rejection | Effective Membrane Area |
Feed Spacer Thickness | ||
| GPD | m3/d | % | ft2 | m2 | mil | |
| FR12-8040 | 10500 | 39.7 | 99.5 | 400 | 37.2 | 34 |
| FR22-8040PRO | 11000 | 41.6 | 99.7 | 400 | 37.2 | 34 |
| FR400-LD | 10500 | 39.7 | 99.6 | 400 | 37.2 | 34 |
| FR11-4040 | 2200 | 8.3 | 99.5 | 90 | 8.4 | 34 |
| Testing Conditions | Operating pressure 225 psi (1.55 MPa) |
|
| Tested at 2000 mg/L NaCl solution |
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| Temperature at 25℃ |
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| pH 7.0 ± 0.5 |
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| Recovery rate at 15% |
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Minimum salt rejection FR12-8040 & FR11-4040 99.3% FR22-8040PRO 99.6% FR400-LD 99.5% |
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| Operating Conditions & Limits |
Maximum operating pressure | 600 psi (4.14 MPa) |
| Maximum feedwater temperature | 45℃ | |
| Maximum feedwater flow SDI15 | 5 | |
| Maximum concentration of free chlorine | <0.1 mg/L | |
| Maximum pressure drop per element | 15 psi (0.1MPa) | |
| Allowed pH range for chemical cleaning | 1-13 | |
| Allowed pH range for feedwater in operation | 2-11 | |
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