Overview
The present invention relates to silver nanoparticles based water purification system. The nanoparticles are generated in situ and embedded within the porous concrete pebbles. The system provides around 99 % decontamination of microbial load in the treated water. The pH of the treated water also remains in the normal range (i.e. 7 to 7.1). The green technology based silver nano embedded pebbles has very good reusability and shows insignificant decrease in microbial decontamination efficacy even after 20-25 uses of the same pebbles within a time span of 6 months.