- Sand filtration requires a coagulant, such as ferric chloride, to precipitate arsenic within the filtration media.
- The Filtraflo™ As process is used to adsorb arsenic from raw water. It features a single bed of ferric hydroxide.
Filtraflo™ and Filtraflo™ As are well adapted to medium to large plants. When arsenic occurs in an existing water treatment plant, they can easily be installed downstream of the sand/dual media filters.
Based on this advanced technology, Opalium - a Veolia Water Solutions & Technologies' company - has also developed Opafer™, for small to medium sized treatment facilities.
