... (e.g. silica sand), dual media (e.g. anthracite coal and sand) and trimedia (e.g. coal, sand and garnet). Granular activated carbon is used when both filtration of particles and adsorption ... such as filtration mode (direct and in-line filtrations), filter media (monomedium with sand, and dual-media with sand and anthracite) and temperature (5°C and 18°C) did not significantly affect ... 750 mm), fine dual-media (anthracite and sand with depths of 900 mm and 300 mm, respectively) and deep dual-media (anthracite and sand with depths of 1500 mm and 300 mm, respectively). The feedwater...