Surface water as a drinking water source contains suspended particles. These are typically removed with chemical processes where lime provides necessary alkali pH. 


Natural surface water used as a drinking water source always contains solid suspended particles. Most of drinking water plants use a conventional chemical process to remove suspended solids. In this process, iron or aluminium salts are added to water and are converted to hydroxides at alkali pH, achieved by liming. Metal hydroxides bind suspended particles and create large flocs, which are subsequently removed at a sand filter. 


Key applications

Key benefits of AQUACALCO “W” range in drinking water treatment
  • Fully compliant with EN 12518 and national standards (KIWA-ATA)
  • Constant and precise quality check for all drinking water relevant elements
  • Extremely low aluminium content, crucial for sensitive users as hospitals and medical centres (AQUACALCO SW from selected Belgian plants)
  • Available in a ready-made slurry (milk-of-lime) form -AQUACALCO MW- in a range of concentrations
  • Significant milk-of-lime delivery costs reduction thanks to high concentration (AQUACALCO MW 40)