A PROCESS FOR THE DEFLUORIDATION OF DRINKING WATER

摘要

Drinking water containing higher levels of fluoride is lowered by the use of activated alumina in a column by passing the spiked water and regenerating solution from bottom of the column and collecting the output from the top of the column. Pre-treatment with KHS04 or NaHS04 delivers safe' water with a flow rate in excess of 40 LPH. Regeneration of spent activated alumina is performed with Na2C03, another safe chemical. High level of sulphate in the treated water is lowered by the use of aminated form of MMA-co-EGDMA resin, synthesized in a single vessel set up in particle size distribution controlled manner.