Selective Separation. Superior Performance.
Nanofiltration is particularly suitable where the objective is to remove/reduce divalent and multivalent ions, hardness, colour, and higher-molecular-weight organics while allowing a significant portion of monovalent salts to pass through.
FILPURE 8040 NF40 SERIES
FILPURE 4040 NF40 SERIES
| Application | What NF Does |
|---|---|
| Water Softening | Removes/reduces Ca2+ and Mg2+ hardness while allowing much of the monovalent salt to pass |
| RO Pretreatment | Reduces hardness and selected contaminants before RO, potentially reducing scaling tendency |
| Partial Desalination | Removes multivalent ions while retaining more monovalent ions than RO |
| Colour Removal | Removes colour-causing organic molecules, particularly in industrial Wastewater |
| Dye Desalination | Separates dyes from salts in textile/dyeing processes |
| Sugar & Syrup Concentration | Allows water to pass while retaining sugars and larger organic molecules |
| Acid Recovery | Can separate/recover acids from selected process streams |
| Caustic Recovery | Used for recovery/reuse of caustic solutions in suitable industrial processes |
| Protein Concentration | Retains proteins and larger molecular-weight components while allowing water and smaller species to pass |
| Food & Beverage Processing | Concentration and fractionation of sugars, proteins and other larger Molecules |
| Pharmaceutical/Biotechnology | Concentration or separation of selected organic compounds and biomolecules |
| Industrial Wastewater Treatment | Reduction/recovery of selected dissolved organics, colour and multivalent ions |
| Textile Industry | Colour removal, dye recovery and treatment/reuse of selected process water |
| Parameter | NF | RO |
|---|---|---|
| Operating pressure | ~50–450 psi typical | Generally higher |
| Hardness removal | High | Very high |
| Divalent ions | High rejection | Very high rejection |
| Monovalent salts | Partial/moderate rejection | High rejection |
| Organic molecules | Depends strongly on MW/charge | Generally high rejection |
| Energy requirement | Lower than RO | Higher |
| Main purpose | Selective separation/softening | Desalination/purification |
| Typical use | Softening, colour removal, dye/acid/caustic recovery | RO water, desalination, high-purity water |
| Model | Description | Datasheet |
|---|---|---|
| FILPURE® NF 40 | Nanofiltration membrane designed for selective ion separation and chemical recovery applications. |
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| FILPURE® NF 70 | High-performance NF membrane for hardness reduction, color removal, and industrial process water treatment. |
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| FILPURE® NF 90 | Premium NF membrane for demanding applications requiring high rejection of divalent ions and high efficiency water softening. |
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