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INTRODUCTION TO NANO FILTRATION PLANT
Nanofiltration is a pressure-driven process that bridges the gap between ultrafiltration and reverse osmosis (RO). It utilizes a semi-permeable membrane to selectively remove divalent ions (such as calcium and magnesium), organic compounds, and heavy metals while allowing specific beneficial minerals to pass through.
Unlike traditional osmosis, which naturally moves solvents toward higher concentrations, Nanofiltration applies external pressure to force water through the membrane from a high-concentration region to a low-concentration one. This allows for "selective filtration"—removing harmful contaminants like pesticides and viruses while maintaining a healthier mineral balance for drinking water and specialized industrial uses.
Nanofiltration has increasingly replaced traditional RO in applications where deep desalination is not required but high-efficiency softening and organic removal are critical. We are a Authorised dealer of Purever Nano Filtration Plant.
Features of Our Nanofiltration Plants
- Smart Automation: Fully automatic systems with IoT-enabled remote monitoring for real-time performance tracking.
- Maximized Water Recovery: Advanced membranes achieving up to 75–85% recovery rates, significantly reducing wastewater compared to standard systems.
- Durability & Hygiene: Systems built with high-grade Stainless Steel (SS) or corrosion-resistant FRP for long-term industrial reliability.
- Energy Efficiency: Lower operating pressures (typically 4–30 bar) and the integration of Energy Recovery Devices (ERDs) help lower electricity costs compared to RO.
- Mineral Retention: Selective removal of hardness (calcium/magnesium) while retaining essential monovalent ions, ensuring non-aggressive, healthy water.
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Common Questions
Nano Filtration Plant — Frequently Asked Questions
What is Nano Filtration and how is it different from RO?
Nanofiltration (NF) is a pressure-driven membrane process that bridges the gap between ultrafiltration and reverse osmosis. Unlike RO which rejects nearly all dissolved salts, NF selectively removes divalent ions (calcium, magnesium, sulfates) and organic compounds while allowing beneficial monovalent minerals to pass through.
What are the main applications of Nano Filtration Plants?
Nano Filtration is used for water softening, removal of pesticides and organic micropollutants from drinking water, color removal in textile effluent treatment, dairy industry water treatment, and as a pre-treatment before RO to extend membrane life.
What is the water recovery rate of a Nano Filtration Plant?
Nano Filtration Plants achieve 75–85% water recovery, which is higher than typical RO systems. The lower operating pressure (4–30 bar) combined with high recovery makes NF significantly more energy-efficient.
What is the cost of a Nano Filtration Plant in India?
Nano Filtration Plant costs range from ₹3 Lakh for small units to ₹2 Crore for large industrial systems. Optima Water is an authorised dealer of Purever Nano Filtration Plants in India.
What maintenance does a Nano Filtration Plant require?
Nano Filtration Plants require periodic CIP chemical cleaning (every 1–3 months), cartridge filter replacement, antiscalant dosing refill, and annual membrane performance testing.
Can Nano Filtration be used for drinking water treatment?
Yes. Nano Filtration removes pesticides, herbicides, hardness, and color while retaining essential beneficial minerals, producing healthier, better-tasting water compared to RO.
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