Nanofiltration Systems
Ahura Aqua designs & manufactures nanofiltration systems for industrial applications including wastewater recovery or manufacturing process of food & beverage or pharmaceutical industry. Nanofiltration works on the same fundamental working principle as reverse osmosis where a high concentration solution is passed through a semi-permeable membrane under forced pressure. The pore sizes of an NF membrane typically range from 0.01 – 0.001 microns, this factor places it smack in the middle of UF membrane which allows slightly more passage of salt & RO membrane which comparatively allows lesser passage of salt.
Typically, organic molecules with molecular weights > 200 – 400 are rejected. Nanofiltration systems effectively reject a wide range of contaminants such as:
- Dissolved organics.
- Endotoxins/pyrogens.
- Insecticides/pesticides.
- Herbicides.
- Antibiotics.
- Nitrates.
- Sugars.
- Latex emulsions.
- Metal ions.
It can also partially reject soluble salts. Monovalent salts such as NaCl or CaCl have rejections of 20 – 80% whereas divalent salts such as MgSO4 have higher rejections of 90– 98%.
Working Principle of Nanofiltration
Nanofiltration uses moderate pressure to push water through a semi-permeable membrane with pore sizes around 0.001 microns—smaller than Ultrafiltration but larger than Reverse Osmosis.
NF membranes selectively remove:
- Divalent and larger monovalent ions (like calcium, magnesium, sulfate),
- Organic molecules (like pesticides, color, and some pathogens),
While allowing most monovalent salts (like sodium chloride) and small molecules to pass. This makes NF ideal for water softening, partial demineralization, and organic matter removal, with lower energy costs than RO.
In short: Moderate pressure → NF membrane → Retains hardness & organics → Allows some salts → Clean, partially demineralized water.
High-Performance Nano Filtration
Our NF systems efficiently remove organic compounds, hardness, and select salts while retaining essential minerals. Designed for industrial applications, they offer energy-efficient, high-precision filtration.
Why Choose Ahura Aqua?
✔ Organic & Hardness Removal – Effectively eliminates organics, pyrogens, and endotoxins.
✔ Selective Salt Rejection – Removes 90-98% divalent salts and 20-80% monovalent salts.
✔ Capacity range-
10 – 150 m3/day - 4” Membrane,
500 – 3200 m3/day - 8” Membrane
✔Operating pressure up-to 300psi
✔ Energy-Efficient Process – Operates at lower pressure than RO, reducing energy costs.
✔ Custom Designs – Tailored NF solutions for food, pharma, and wastewater industries.
✔ Advanced Automation – SCADA-enabled monitoring ensures precise filtration control.
✔ Extended Membrane Life – Optimized pre-treatment reduces fouling, enhancing longevity.
Industries We Serve
✔ Dyes & Paints Industry – Removal of organic compounds & COD reduction.
✔ Textile & Polyester Processing – High-purity water for fabric & fiber production.
✔ Dairy Industry – Protein & whey concentration, lactose separation.
✔ Pharmaceutical & API Sector – WFI & formulation wastewater treatment.
✔ Chrome Recovery – Heavy-metal separation for electroplating & industrial reuse.
✔ Wastewater Treatment – Reduction of hardness, sulfates, and COD in effluents.
Successful Installations
✔ Capacity: 1 M³/hr. for De-salting
✔ Installed at: Chaitanya Bio, Malkapur, Maharashtra
Get Started with Reliable Water Solutions!
Let Ahura Aqua take care of your Nano Filtration needs with tailored, high-performance solutions. Contact us now for a customized consultation!