Activated carbon filters or granulated activated carbon filters (GAC) are usually used for removal of odor, organics, colloid particles, chlorine residuals, and other contaminants. They allow achieving chlorine concentrations below 0.1 ppm when removing chlorine residuals. GAC filters are often put after the sedimentation basins to further decrease the turbidity, remove color, and improve water quality; they can be also used as a pretreatment step before the RO, UF or IX treatment.
Removal of chlorine residuals;
Odor, color and taste control;
Organic matter removal ;
Adsorption of heavy metals ions and toxic contaminants;
Pretreatment for UF, RO and IX systems.
Filtration rate: 8-12 m/hr;
Water turbidity: ≤ 5 mg/l;
Working pressure: ≤ 0.4 MPa;
Backwash rate: 4-12 l/(m2*s);
Backwash duration: 5-10 minutes;
Carbon layer thickness: 1000 – 1200 mm;