In a major stride toward technological self-reliance and maritime readiness, the Defence Research & Development Organisation (DRDO) has developed an advanced indigenous desalination membrane tailored for the Indian Coast Guard (ICG). The innovation, led by the Defence Materials Stores and Research & Development Establishment (DMSRDE) in Kanpur, features a nanoporous multilayered polymeric membrane designed to withstand high-pressure sea water desalination environments.
Developed within a record eight-month timeframe, the membrane addresses one of the core challenges faced by existing desalination systems — chemical instability in saline conditions, particularly due to chloride ion exposure. The cutting-edge polymeric design enhances long-term durability, ensuring reliable fresh water supply during prolonged maritime missions.
This development signifies a leap in India’s strategic capabilities, particularly in material science and naval support systems. The membrane is specially engineered for installation aboard ICG vessels, improving operational autonomy and reducing dependency on traditional water sources during extended patrols and rescue operations.
The DRDO’s achievement aligns with global trends in desalination technology, notably in the use of nanoporous and thin-film nanocomposite (TFN) membranes, which have demonstrated superior performance in terms of energy efficiency, fouling resistance, and perm-selectivity. These advancements were widely documented in international studies between 2015 and 2017 and are now being effectively realized in India through DMSRDE’s focused expertise in non-metallic and nanostructured materials.
Beyond its defense utility, the new technology also holds promise for civilian applications. With India increasingly reliant on desalination to address its growing freshwater demands — exemplified by the Minjur Desalination Plant in Chennai, which supplies 100 million liters of water per day — this innovation may pave the way for more cost-effective, resilient, and scalable water solutions nationwide.
The DRDO’s milestone underscores its dual mandate of strengthening national security while contributing to broader societal needs. As India navigates environmental and strategic challenges, homegrown technologies like this desalination breakthrough will play a vital role in securing both maritime operations and water sustainability.
