Granular activated carbon ( GAC ).
https://www.emergency-wash.org/water/en/technologies/technology/granular-activated-carbon-gac
👉🏼 PDF: https://app.box.com/s/wmfd5j4rzecvgysewk9s7avqhe6l4nlu ____ Granular Activated Carbon (GAC) is the most used adsorption method in drinking water to remove taste, odour and colour-causing compounds, natural organic matter, disinfection by-products and synthetic organic chemicals present in the source water. GAC is also used for vapour treatment to remove noxious odours and contaminants. In small-scale treatment plants, it is often used for chlorine and chloramine removal. GAC can be used in all phases of an emergency.