On May 15, 2025, the Defence Research & Development Organisation (DRDO) announced the successful development of an indigenous nanoporous multilayered polymeric membrane for high-pressure sea water desalination. This breakthrough, achieved by DRDO’s Kanpur-based laboratory, Defence Materials Stores and Research & Development Establishment (DMSRDE), addresses critical challenges in water purification for the Indian Coast Guard (ICG) and coastal communities, aligning with India’s Aatmanirbhar Bharat initiative.
Technology Behind the Membrane
Addressing Chloride Ion Challenges
The polymeric membrane is designed to withstand the harsh conditions of chloride ions in saline water, ensuring stability and durability. Developed in a record time of eight months, this technology meets the operational requirements of ICG ships, enabling efficient desalination under high-pressure conditions. The membrane’s nanoporous structure allows it to filter salt and impurities, producing potable water for maritime and potentially coastal applications.
Testing and Performance
Rigorous Trials on ICG Vessels
DMSRDE, in collaboration with the Indian Coast Guard, conducted initial technical trials on an existing desalination plant aboard an Offshore Patrolling Vessel (OPV). The safety and performance trials yielded fully satisfactory results, confirming the membrane’s reliability. The system is currently undergoing extended testing, with 500 hours of operational trials required for final clearance by the ICG.
Applications Beyond Defence
Potential for Coastal Communities
While initially developed for ICG ships, the polymeric membrane holds promise for broader applications. With minor modifications, it could be adapted for coastal desalination plants, addressing water scarcity in India’s coastal regions. This versatility enhances the technology’s potential to provide clean drinking water to communities facing saline water challenges, contributing to sustainable development.
Strategic Importance
A Step Toward Self-Reliance
The development of this indigenous desalination technology is a significant milestone in India’s journey toward Aatmanirbhar Bharat. By reducing reliance on imported desalination systems, DRDO’s innovation strengthens national security and supports the operational readiness of the Indian Coast Guard. It also showcases India’s growing expertise in defence research and material science.
Why This Matters
Advancing Technology and Sustainability
The DRDO’s nanoporous polymeric membrane represents a leap forward in addressing the critical need for clean water in challenging environments. Its successful implementation on ICG ships and potential for civilian applications highlight India’s commitment to indigenous innovation. This technology not only enhances maritime operations but also paves the way for sustainable water solutions, reinforcing India’s role in global technological advancement.
Key Facts About DRDO’s Desalination Technology
- The nanoporous polymeric membrane was announced on May 15, 2025 by DRDO.
- Developed by DMSRDE in eight months for the Indian Coast Guard.
- Initial trials on an Offshore Patrolling Vessel were successful, with 500 hours of testing ongoing.
- The membrane addresses chloride ion stability for high-pressure sea water desalination.
- It supports Aatmanirbhar Bharat and has potential for coastal desalination applications.