RO Membranes
Fouling-Resistant RO Membrane Elements
Anti-fouling brackish-water RO membrane elements for industrial and municipal water treatment, including challenging feedwater applications. TF22-8040FR and TF22-4040FR are rated at 99.5% stabilized salt rejection under the specified test conditions.
Specifications
- Models
- TF22-8040FR; TF22-4040FR
- Active membrane area
- TF22-8040FR: 430 ft² (40 m²); TF22-4040FR: 108 ft² (10 m²)
- Stabilized salt rejection
- 99.5%
- Minimum salt rejection
- 99.3%
- Rated permeate flow
- TF22-8040FR: 10,500 gpd (40 m³/d); TF22-4040FR: 2,500 gpd (9.5 m³/d)
- Maximum operating pressure
- 41 bar (600 psi)
- Maximum operating temperature
- 45 °C (113 °F)
- Operating / cleaning pH range
- 2–11 continuous operation; 1–13 chemical cleaning
- Maximum feed SDI15
- 5.0
- Free-chlorine tolerance
- <0.1 ppm
Overview
TF22-8040FR and TF22-4040FR fouling-resistant reverse osmosis membrane elements are designed for brackish-water desalination. They combine high permeate production with high salt rejection for large industrial and municipal water-treatment systems, including applications with challenging influent water quality.
Performance
Under the stated test conditions, both models provide 99.5% stabilized salt rejection and 99.3% minimum salt rejection. TF22-8040FR has 430 ft² (40 m²) of active membrane area and a rated permeate flow of 10,500 gpd (40 m³/d); TF22-4040FR has 108 ft² (10 m²) and a rated flow of 2,500 gpd (9.5 m³/d).
Published Test Conditions
Published test conditions are 1.55 MPa (225 psi) feed pressure, 25 °C (77 °F) feedwater temperature, 2,000 ppm NaCl, pH 8, and 15% permeate recovery. Actual system performance varies with feedwater quality and operating conditions.
Operating Limits and Selection
Operating limits include 41 bar (600 psi) maximum pressure, 45 °C (113 °F) maximum temperature, 1.0 bar (15 psi) maximum pressure drop per element, pH 2–11 for continuous operation, pH 1–13 for chemical cleaning, maximum feed SDI15 of 5.0, and free-chlorine tolerance below 0.1 ppm. Final model selection and pretreatment design should be confirmed against the feedwater analysis and required product-water quality.
Contact WaterEPC to request a model-specific datasheet, project support, and quotation.
