Sustainable Water Treatment with Induced Bank Filtration

This study demonstrates that an induced bank filter (IBF) system can treat raw water polluted with Escherichia coli (E. coli) bacteria. Similar to riverbank filtration (RBF), or reversed relies on natural processes clean water, including through layers of allochthone alluvial sediments and a bioactive layer forms top the after ripening period. At site, located in Southwestern India, villagers rely mountain spring for their supply. Although generally high quality, contains E. bacteria (up ~2000 MPN/100 mL). Raw diverted from this was gravity-fed into IBF system, which consisted (1) flow regulator, (2) pre-filter (3) actual filter. Designed constructed based pilot testing prototype filters, full-scale (5 m by 7 2 m) built its performance maintenance requirements were studied during both monsoon season dry season. The data show significantly improved quality. Turbidity concentrations reduced below detection limit (approximately 2.5 log unit reduction). During peak (August), present effluent storm destroyed cover tank. construction costs documented. Extrapolated over 10-year period, cost 3 10 times lower than reverse osmosis supplied truck, respectively. be part affordable supply rural villages mountainous terrain where conventional RBF systems cannot installed other treatment technologies are out financial reach.