Roughing filtration is a simple, efficient and chemical free water treatment method for turbidity removal; it can be used as a pre-treatment method prior to slow sand filters or disinfection with chlorine. The main disadvantage of roughing filtration for use in emergency situations is that it uses gravel as a filter medium. Gravel may be unavailable or difficult to transport because of its weight. [Continues.]
Kapranis, Y. (1999). Design of an Emergency Portable Roughing Filter using Polystyrene Beads as Media © Yorgos Kapranis
Fundamental research and engineeringTechnical drawingsEnglish
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