MUMBAI, India, March 13 -- Intellectual Property India has published a patent application (202641025648 A) filed by Dayananda Sagar College Of Engineering, Bangalore, Karnataka, on March 4, for 'engineered metallurgical-byproduct filtration system for high-efficiency microbial attenuation in stormwater runoff.'
Inventor(s) include Ashwini Sathynarayana; Dr. Geetha L; Raghavendra H N; Raghavendra Prajwal H S; Vibhashree N; and Sanjeev T P.
The application for the patent was published on March 13, under issue no. 11/2026.
According to the abstract released by the Intellectual Property India: "A modular, flow-through stormwater treatment system employs a reactive filtration medium composed of graded steel production byproducts, including steel furnace slag and steel mill scales, packed within sectioned containment modules and hydraulically distributed by perforated stainless steel weirs to remove microbial pathogens and phosphate under variable runoff conditions. The medium presents iron, calcium, and aluminum-bearing surfaces that promote microbial attachment and inactivation and facilitate phosphate adsorption and co-precipitation, while the mixed morphology sustains porosity and minimizes mills agglomeration at short contact times. The architecture includes inlet riprap pre-screening, staged filtration sections with freeboard to prevent bypass, and effluent management with monitoring ports, maintaining a residence time on the order of minutes at base flow and robust performance at elevated flows. Representative performance includes sustained E. coli reductions around the 30-40% range and phosphate reductions exceeding 52% across storm events, while constraining dissolved iron increases to hundredths of milligrams per liter and maintaining effluent iron below secondary standards. The system integrates low-energy operation, compact footprint at outfalls, and maintenance-accessible media surfaces, enabling durable pathogen and nutrient attenuation in urban stormwater conveyances and detention pond outlets."
Disclaimer: Curated by HT Syndication.
