BY Chemistry

                                RO (Reverse Osmosis) water filtration is one of the most popular and cost-effective water filtration method.   In simple terms, a reverse osmosis water filter works as water is forced across a semi-permeable membrane, leaving contaminants behind that are flushed down the drain. The clean drinking water collects in a holding tank. RO filtration method are as follows: A sediment filter to trap particles, including rust and calcium carbonate  A second sediment filter with smaller pores An activated carbon  filter to trap organic chemicals and chlorine, which will attack and degrade certain types of thin-film composite membrane. Optionally, an ultraviolet  lamp for sterilizing any microbes that may escape filtering by the reverse osmosis membrane. Optionally, a second carbon filter to capture those chemicals not removed by the reverse osmosis membrane.              In some systems, the carbon prefilter is