Huamo TF31-4040 Low-Pressure BWRO Membrane Element
The TF31-4040 ultra-low pressure aromatic polyamide composite RO membrane operates at approximately 2/3 of conventional pressure while achieving 99.4%+ salt rejection. Ideal for energy-efficient water treatment systems processing brackish water, surface water, and groundwater with salinity under 5000 mg/L.
- Low energy consumption
- High filtration accuracy
- Large water output
- Strong anti-fouling
Product Introduction
The TF31-4040 is an ultra-low pressure aromatic polyamide composite reverse osmosis membrane element developed by Huamo Environmental. Operating at approximately 2/3 of the pressure required by conventional low-pressure brackish water membranes, it achieves a stable salt rejection rate of 99.4% or higher with a minimum rejection of 99.0%, delivering excellent permeate output under reduced pressure conditions. Designed for treating surface water, groundwater, and municipal water with TDS up to 2,000 mg/L, the TF31-4040 is ideal for packaged drinking water production, residential water supply, and food and beverage processing. It combines energy-efficient operation with reliable desalination performance.
Specifications & Parameters
Performance Parameters:
| Model | Effective Area ft² (m²) | Stable Salt Rejection % | Minimum Salt Rejection % | Permeate Flow gpd (m³/d) | Stable Salt Rejection % |
| TF31-4040 | 78 (7.2) | 99.4 | 99.0 | 2,250 (8.7) |
Note: Test conditions: 1,500 ppm NaCl solution, 150 psi (1.03 MPa), 25°C, pH 7–8, 15% recovery rate.
Effective membrane area tolerance: ±3%; individual element permeate flow variation: ±15%.
Product Dimensions:
| Model | A inch (mm) | B inch (mm) | C inch (mm) | D inch (mm) |
| TF31-4040 | 40 (1,016) | 1.04 (26.5) | 0.75 (19) | 3.99 (99) |
Note: 1 inch = 25.4 mm
Operating Conditions
| Membrane Type | Polyamide Composite Membrane |
| Maximum Operating Pressure | 600 psi (4.14 MPa) |
| Maximum Operating Temperature | 45°C |
| Feed Water pH Range | 3.0 - 10.0 (continuous operation) |
| Maximum Feed Water Chlorine | <0.1 ppm |
Application Areas
The TF31-4040 membrane is widely applied in electronics, power generation, municipal drinking water, chemical processing, pharmaceuticals, and pure water production, as well as wastewater reuse and concentration applications. It delivers excellent salt rejection, high permeate output, and low operating pressure to meet diverse water treatment requirements.
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