Carbon Filtration Facts.
Whole of house carbon filters effectively remove chlorine, trihalomethanes, chemical pollutants and associated tastes and odours from the water supply to the home or office. Carbon filters also reduce colour and turbidity, resulting in sparkling fresh, great tasting water from every tap in the home or office.
Carbon filters have deep beds of activated carbon manufactured from a variety of organic substances such as coal, coconut and lignite through which the water flows. Activated carbon, is carbon that has been heated to very high temperatures in the absence of oxygen to form millions of microscopic holes. The vastly increased surface area that results from the activation process substantially improves the chemical removal efficiency of the carbon and increases filter life.
Filters require regular backwashing to flush accumulated sediment / pollutants to drain. Regular backwashing will keep the carbon bed clean and ensure that the filter continues to operate to its optimum efficiency. Backwashing should be for at least 10 –15 minutes a week and can be initiated either manually or automatically. Automatic models are preferred by most families and are usually set to backwash in the early hours of the morning when the filter is not in use. Filters should be left in service even when the home is empty as regular flushing also aids in preventing the formation of bacteria colonies that can form when water flow to the home is interrupted for long periods of time. As contact time improves the effectiveness of chemical removal, it is important to size the carbon filter to the flow rate to the home. i.e. – Higher flow rates will require a larger volume of carbon.