... in raw water, sediment particles, organic colloids, organic matter, odor, chlorine and other impurities, with pre-programmed as a ... . In general, before running back wash once a day.activated carbon filterActivated carbon is used wood, coal, shell (nuclear) and other carbonaceous ... . Primarily to remove organic matter in raw water, chlorine, odor, color, etc., so that the original residual chlorine in ...