Industrial Nanofiltration Membrane 4040 for Efficient Industrial Water Treatment
In industrial water processing, choosing the right separation technology is critical to balancing efficiency, product quality, and operational costs. While reverse osmosis (RO) is a common standard, it is not always the most effective solution for every application.
Enter the YIME Industrial Nanofiltration Membrane 4040. Designed for high-performance liquid separation, this technology offers a precise balance: it effectively removes multivalent ions while maintaining the energy efficiency your plant requires
The NF Advantage: Selective Separation
The YIME NF 4040 membrane is engineered to provide high rejection rates for multivalent ions, such as calcium and magnesium, while allowing a controlled passage of monovalent ions like chloride.
For facilities focused on industrial-grade softening or process water purification, this selective capability often results in lower operating pressures and reduced energy consumption compared to full-scale demineralization.
Products Advantages
The diagram below illustrates how these two technologies differ in solute rejection at the molecular scale.
In real-world applications such as industrial water softening and selective metal ion enrichment, the YIME 4040 nanofiltration membrane performs differently from RO membranes in ways that matter operationally.
RO membranes are effectively a broad barrier-they reject nearly everything dissolved in the feed water, from calcium and magnesium to chloride and other salts. That approach delivers high-purity water, but it comes with trade-offs: high hydraulic pressure, elevated energy consumption, and permeate that is so low in minerals it becomes corrosive to downstream carbon steel piping.
The YIME 4040 NF membrane takes a different approach. It targets multivalent ions like calcium and magnesium-the primary contributors to hardness and scaling-while allowing monovalent ions such as chloride to partially pass through. This selectivity has practical implications: the system runs at significantly lower pressures than RO, which cuts energy costs. At the same time, the permeate retains some mineral content, making it less aggressive toward downstream equipment and reducing corrosion-related maintenance.
Structurally, RO membranes are dense and non-porous; water transport relies on a solution-diffusion mechanism that requires high pressure to overcome osmotic pressure. Nanofiltration membranes, by contrast, have a charged, nanoporous structure that permits water and certain monovalent ions to pass more readily-combining size exclusion with electrostatic repulsion. This is why NF achieves selective separation at lower operating pressures.
NF is preferred when the goal is hardness reduction, organic removal, or selective concentration rather than complete salt removal.
Technical Specifications
To help you match the right element to your system's demands, our NF 4040 series offers flexibility in flow and rejection rates:
| Membrane Element Type | Model | Effective Membrane Area (ft² / m²) | Permeate Flow Rate (GPD / m³/d) | Stable Salt Rejection (%) | Operating Pressure (PSI) | Test Solution (ppm) |
|---|---|---|---|---|---|---|
| Industrial NF Membrane |
YIME-NF-4040-6090 |
80 (7.4) | 2200 (8.32) | >95 (MgSO₄) | 100 | 500 (MgSO₄) |
| 2200 (8.32) | 70–80 (NaCl) | 100 | 500 (NaCl) | |||
| Industrial NF Membrane |
YIME-NF-4040-3080 |
80 (7.4) | 2500 (9.46) | >90 (MgSO₄) | 70 | 500 (MgSO₄) |
| 2500 (9.46) | 45–60 (NaCl) | 70 | 500 (NaCl) | |||
| Industrial NF Membrane | YIME-NF-4040-9010 | 80 (7.4) | 2200 (8.32) | >96 (MgSO₄) | 100 | 500 (MgSO₄) |
Engineered for Compatibility
We know that downtime is expensive. The YIME Industrial Nanofiltration Membrane 4040 is built to standard 4040-size dimensions, making it a seamless drop-in replacement for your existing membrane housings. Whether you are performing a routine replacement or upgrading your filtration system, our membranes ensure a stress-free integration.
Test Conditions
| Membrane Type | Test Temperature (℃) | pH Range | Maximum Feed SDI |
|---|---|---|---|
| Industrial Nanofiltration Membrane | 25 ± 2 | 7.5–8.0 | ≤5 |
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