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Activated Carbon Filter The primer treated effluent water contains dissolved and Un-dissolved impurities. Un-dissolved impurities can be removed by a suitable filtration plant, but dissolved organic/inorganic impurities, e.g. color, odor, COD, BOD, etc., can not be removed through it. An activated carbon filtration column can remove these impurities. 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 & granular activated carbon layer, where the carbon granule (at certain level) absorbs unwanted impurities thereby removing free chlorine, phenol, taste and odor as well as reducing COD/BOD etc. Carbon Filters have back flushing arrangement also, which flushes away the deposited impurity by carbon granules very easily. Thus, the reverse flow of water ,flushes away the impurities deposited at carbon granules.
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