Carbon has been in use for water treatments with evidence found dating back to the Harappan civilization. The latest technologies involve ultrafiltration (UF), reverse osmosis (RO), and desalination methods. Carbon is also an essential component in all the water treatments available today in the form of graphene.
Just a flippin minute here! Carbon is a pollutant. Is someone trying to have it both ways, or is reality finally coming back into favor?
Electrolysis of water is another approach though uses much more energy. Disassemble the water into oxygen and hydrogen gasses, filter those separately, then reassemble the atoms back into ultra pure water on the other side. This process wouldn’t filter out the microbes but disassemble them, extracting their water for reuse as well.
Carbon is not a pollutant. Activated charcoal (carbon) is commonly used in all kinds of filtration, making water safe. Saying carbon is a pollutant is the same as saying water is deadly because people drown in it.