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Municipal Water Treatment (Granular Activated Carbon)

CPL Carbon Link provides a range of Granular Activated carbon (GAC) products for municipal water treatment. The key features of these products include optimum product selection, a flexible approach to adsorption, maximum volume activity and excellent thermal reactivation characteristics.

In a typical municipal water treatment plant, contaminated water is pumped into a flotation unit, which is used for the removal of suspended solids such as algae and particulate material. Dissolved air is injected under pressure into the unit through special nozzles. This creates microbubbles which become attached to the suspended solids, causing them to float. The result is a layer of suspended solids on the surface of the water, which is removed using a mechanical skimming technique. 

Ozone is produced on site by passing high tension, high frequency electrical discharges through air in specially designed equipment. Ozone is injected into the water to provide a powerful bactericidal action and to break down the natural humic compounds that are the cause of the taste and odour problem. 

The water then enters a rapid gravity filtration system filled with Filtracarb® FY5, which is used to adsorb the compounds resulting from the ozone treatment. Filtracarb® FY5 was selected due to its high surface area and retentive pore structure, smaller molecules.

Following adsorption, the water is disinfected for supply to the distribution network. 

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