May 16, 2025 | The Defence Research and Development Organisation (DRDO) has announced a landmark innovation in water purification technology a high-performance, indigenous nanoporous multilayered polymeric membrane designed for high-pressure sea water desalination. Developed in just eight months, the new membrane represents a major leap forward in self-reliant defense technology under the Aatmanirbhar Bharat initiative.
Built for the Indian Coast Guard
The breakthrough comes from DRDO’s Defence Materials Stores and Research & Development Establishment (DMSRDE), located in Kanpur. The membrane has been tailor-made to meet the operational needs of Indian Coast Guard ships, which operate in challenging maritime environments where access to freshwater is critical.
The membrane effectively tackles one of the most persistent challenges in desalination corrosion and membrane degradation caused by high levels of chloride ions in sea water. It is engineered to remain stable and efficient even under intense pressure and saline conditions, enhancing both durability and water recovery rates.
Tested and Ready for High Seas
Preliminary safety and performance trials were carried out on existing desalination systems aboard an Offshore Patrol Vessel. The membrane has already demonstrated excellent functionality, with full-scale operational clearance expected after 500 hours of additional endurance testing.
The success of these trials would open the door for widespread deployment of the technology across Indian Coast Guard fleets, reducing dependence on imported membranes and ensuring a reliable, homegrown solution for freshwater generation at sea.
This development not only strengthens India’s maritime defense capabilities but also underscores DRDO’s role in advancing frontier materials science for national needs. It holds promise for future civilian applications as well, particularly in coastal regions with limited access to potable water.
As India continues to push the boundaries of innovation, this new desalination technology stands as a testament to the country’s growing self-reliance in critical sectors.