Candidly, the ordinary water received through lakes, rivers, wells or other such sources is not so pure. It contains various contaminants that pollute it in a big way. Such things are quite harmful for our health. The municipal authorities and other water handling agencies make arrangements for purification of water. Reverse Osmosis water systems also help in facilitating pure water for drinking, cooking and other purposes.
High quality pure water can be obtained with such systems that contain various filtration stages. Many companies boast of making available water purifying systems equipped with five or even six stages of filtration. However the following most essential filtration-stages are actually needed to purify water in reliable manners for the end users.
This stage is able to get rid of the oils and chlorine etc from the water. It is useful in removing chlorine that can destroy the pores on the membrane. This stage is all the more helpful in enhancing the rate of water flow and enable the filtration process all the more effective.
To be frank, it is the RO membrane that is responsible for all the filtration work in the system. The membrane in the RO is in fact a rolled up piece of paper that contains minute holes in it. Most of the particles get removed with these holes as per their particular size. It is suggested to have 1 micron filter in the RO systems while human hair is of about fifty microns.
It consists of a particulate filter and the carbon filter for protecting the costlier membrane unit of the RO system.
Reverse Osmosis water systems are quite sufficient to provide sufficient quantity of pure water for cooking and other household tasks. The water obtained from these systems is worth drinking. It is not necessary to do any more processing of this clean water. But many companies install the storage devices for enhancing the flow of clean water. It is some sort of water bladder with rubber balloons that are able to store sufficient quantity of water and push the same out to the faucet when it is required. However, the water obtained with such bladder often gives rubbery taste because of the rubber from which it is made of. This foul taste can be got rid of by fixing activated carbon filtration stage.
Candidly, almost all the RO systems are equipped with the most essential three stages of filtration. However many manufacturing companies boast of providing high quality pure water by adding more filtration stages to the RO systems that become a costly affair for the end users.
The most essential filtration stages are the Pretreatment and the Post treatment. RO systems while extra filtration stages may put adverse effects upon the systems and may lead to replacement of the membrane units after some time.It may be noted that even single stage filtration filters are made with two or more filtration processes. Those in the market for purchasing RO systems must think about the contaminants that are responsible for polluting the water. Candidly, no filter system can be able to remove all the contaminants from ordinary tap water or the one obtained through other water-sources. A single block filter could not clean the hard water or the one affected with chlorine, other contaminants or bacteria etc. A simple activated carbon based chlorine filter could be sufficient to purify the ordinary tap water that could be at par. Its taste can be improved to great extent with such activated carbon based chlorine filter. Many systems have the polyphosphate filters for eliminating calcium carbonate on the membrane surface. It is somewhat like calgon bath beads grounding up in the filter. It may be noted that this stage is quite costlier
The choice of RO systems with multiple filtration stages depends entirely upon the quality of
water that we usually get from taps, wells, lakes or rivers etc. Water purifying systems with carbon block filter, sediment pre-filter, second sediment filter, activated carbon filter, reverse osmosis membrane, alkaline filter or even an ultraviolet water treatment unit could be purchased. Focus should be emphasized on your particular needs with regard to contamination of water and your pocket.