Water treatment is a critical aspect of today’s industrial environment, where sustainable methods are important to comply with environmental regulatory practices. Among the newer innovations in industry, Nano-Filtration Membranes for COD Reduction are the most revolutionary. COD indicates Chemical Oxygen Demand and is one of the significant parameters for wastewater management. It indicates the amount of organic pollutants in the water. Very high COD levels can seriously harm the ecosystem, along with regulatory challenges for the industries.
This is where nano-filtration membranes serve as a very effective solution. These advanced membranes are designed to selectively remove organic compounds while allowing the essential minerals and salts to pass through. They can efficiently handle different qualities of water; therefore, they are suitable for textile, pharmaceutical, food processing, and chemical industries.
Integration of Nano-Filtration Membrane for COD Reduction would enable industries to manufacture cleaner effluents and have a lower environmental footprint and compliance with stringent discharge norms. They also make operations more energy-efficient and reduce chemical consumption.
At Jay Water, we celebrate nano-filtration membranes that fulfil the unique needs of Indian industries. With us, make sustainable water management a reality while optimizing cost and ensuring environmental stewardship. Get a glimpse into the future with nano-filtration membranes for wastewater treatment today!
Project Overview
Daily Effluent is generated around 300 KLD from the Manufacturing of Optical Brightening Agent Chemical (OBA).
- Parameters of Effluent are COD 5000 ppm, BOD 1050 ppm, TDS 20000 ppm & TSS 110.
- Initially client set up a Conventional ETP to treat the generated effluent, but due to high TDS value, the Biological treatment failed.
- The client has an effluent discharge limit to CETP in terms of parameters, which is COD<1000 ppm.
- If COD is between 1000-3000 ppm, CETP will charge MEE Operating cost.
- If COD is >3000 ppm, CETP will charge INR 3 per litre.
Milestone
- MEE (Multi-Effective Evaporator) can treat the effluent, but very expensive for the total effluent.
- Nano-filtration Membrane technology is one of the solutions to treat this effluent to reduce COD to the desired limit with a good amount of recovery.
- TSS, Turbidity and BOD need to be controlled before feeding the Effluent into the NF system.
- If it is not in control, the Membrane will get choked and need more frequent CIP to clean it, and it will directly affect on life of the Membrane.
Nano-Filtration Membrane For COD Reduction
- Client Equalise the effluent in the Equalisation tank, and the effluent passes through the filter press and is directly fed into the NF system through the Bag Filter and Micron Cartridge Filter.
- Due to a high TSS value, CIP frequency is once after 8 to 10 hours of operation
- Finally, the purpose of Effluent treatment is successful with the NF System.
- Final concentration of NF System goes to MEE with minimum Quantity and operational cost is practically viable
| PARAMETER | FEED | PERMEATE |
|---|---|---|
| COD (ppm) | 2,500 | < 350 |
| TDS (ppm) | 20,000 | 12,000 |
| TSS (ppm) | 50 | – |
| Plant Capacity | 300 KLD | – |
| System Recovery | 75-80% | – |
| CIP Frequency | DAILY | – |
| Membrane | TORAY make CSM NF | – |
Summary & Benefit
- Purpose fulfilled with Equalisation, followed by Filter Press, followed by Nano-Filtration Membrane Technology & MEE on NF Concentrate water.
- Easy to handle compared to the Conventional ETP.
- Less Manpower is required compared to the conventional ETP.
- Best technology To Remove diverse MW Organic Mixtures, which causes the COD in effluent.
- Nano-Filtration Membranes have having Hydrophobic surface, which is antifouling in nature. That’s why it can easily remove surface chalking.
- 70% Cost Deduction in Operating Cost with NF System & MEE Combined, Compared to Only MEE.
Conclusion
Integration of Nano-Filtration Membranes for COD Reduction has become an important innovation in industrial water treatment. This case study pronounces the potentially transformative technology especially important to the industries with heightened COD, BOD, TDS, and TSS levels in the effluent. Nano-filtration membranes will solve the operational costs, environmental compliance, and water management issues, providing the answer to modern industrial challenges.
Innovative wastewater solutions of Jay Water have brought phenomenal results for the clients. The client reduced COD from 2,500 ppm to below 350 ppm with a recovery rate of 75-80% by using a straightforward system designed to work together with an equalisation, filter press, bag filters, and nano-filtration membranes. This requirement, added up with the CETP limits and preservation of effluent to the Multi-Effective Evaporator (MEE) reduced operational costs by 70%.
Performance improvement in the nanomembranes has been enhanced by their hydrophobic and antifouling nature, which reduces fouling and maintenance requirements. By dealing with critical issues such as the need for frequent CIP and effluent variability, the solution revealed manageability and efficiency advantages over conventional ETP setups. Not only were manpower requirements lowered, but also ensured sustainability.
Among the many areas of advanced membrane solution delivery, Jay Water has established itself as a trusted partner, underscoring its quality commitment to innovation and environmental stewardship. Now, any industry is looking for a pragmatic and cost-effective solution for sustainable water management. They are also expected to be environmentally sound as made possible by this nanofiltration technology.
For industries looking to balance operational efficiency and environmental responsibility, Jay Water and its nano-filtration membrane technology represent the future of wastewater treatment. By choosing this cutting-edge solution, businesses can achieve compliance, optimise costs, and contribute to a greener planet.
Why do TORAY Nano-Filtration Membranes Resist Fouling Better?
TORAY’s nano-filtration membranes feature hydrophobic, antifouling surface chemistry that provides natural resistance to fouling compared to standard membranes:
Key Advantages:
- Hydrophobic surface: Organic foulants adhere less effectively
- Smoother membrane structure: Reduces clogging points
- Higher mechanical strength: Withstands higher backflush pressures for cleaning
- 30-40% less cleaning chemical required vs. generic membranes
- Consistent performance over 5+ year lifespan with proper maintenance
FAQs
How often does the nano-filtration membrane need cleaning?
Nano-filtration membranes typically need cleaning every 8-10 hours of operation in high-TSS (Total Suspended Solids) environments. However, in normal conditions with proper pre-filtration (equalisation tank, filter press, and cartridge filters), cleaning frequency ranges from 3 to 12 months. Regular cleaning prevents membrane fouling, maintains water quality, and extends membrane life.
How long does a nano-filtration membrane last?
A well-maintained nano-filtration membrane can last between 1.5 to 3 years, depending on the quality of feed water, operating conditions, and maintenance practices. Proper pretreatment and regular cleaning significantly extend membrane lifespan. The Jaywater system uses TORAY CSM NF membranes, known for their durability and antifouling properties.
Does nano-filtration remove essential minerals from water?
No, nano-filtration selectively removes organic compounds and divalent ions (like calcium sulfate) while allowing beneficial monovalent ions (like sodium chloride) and essential minerals to pass through. This is a key advantage over reverse osmosis, which removes almost all dissolved substances. The treated permeate water can be reused for cleaning, washing, or fed into downstream treatment for final purification.
