The primer treated effluent water contains dissolved and Undissolved impurities. Undissolved impurities can be removed suitable filtration plant but it cann’t remove dissolved organic/inorganic impurity i.e. color,odor,cod,bod etc.. which required to remove for particular level by activated carbon filtration column.

Activated carbon filters are made from mild still/FRP closed vessel incorporating frontal piping fitted with valves and are operated under pressure. The water is passed through the under bed media & granuler activated carbon layer. Where the carbon granule at certain level absorbs unwanted impurities for removal of free chlorine, phenol, taste and odor as well as reduction COD/BOD etc.