We all need safe and clean drinking water to survive. Hence, water purifiers have become a necessity and not just a gimmick or a novelty device at this point. While they have become a common sight, do we really know how they work?
In this regard, we have one term that everyone knows is RO. Many of us, in fact, use it synonymously with water purifiers. Well, not all purifiers use this technology but a majority use it. Let’s try to understand it a little better so that we know what we are using.
Reverse Osmosis: Background and mechanism
It is the most common technology available on the market. RO stands for Reverse Osmosis. It is not a very complicated process as most of us know what osmosis is. In easy terms, it is a spontaneous movement of a liquid through a selectively permeable membrane from one side to another. RO utilises the same principle. This powerful, yet simple, technology was developed for the marines so that they can purify salty water and make it fit for drinking.
In a UV water filter system, UV (Ultraviolet) rays kill the harmful bacteria from the water. Hence the water is completely disinfected from pathogens. The UV water purifier is good for health because it kills all the harmful microbes present in the water without affecting the taste.
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While both RO and UV water purifier systems either remove or kill the harmful bacteria in the water, you need to consider several other factors before making the final buying decision. Here are the key differences between the two filtration systems.
UV filter kills all the pathogens present in the water. However, the dead bacteria remain suspended in the water. On the other hand, a RO water purifier kills the bacteria and filters out their dead bodies floating in the water. Hence, RO purified water is more hygienic.
RO water purifiers can remove dissolved salts and chemicals from the water. However, UV water filters cannot separate dissolved solids from the water. Therefore, RO systems are more effective in purifying tap water as bacteria are not the thing contaminating the water. Heavy metals and other harmful chemicals present in the water can affect your health adversely.
RO purifiers have a built-in pre-filtration system that helps them work with dirty and muddy water. On the other hand, UV filters do not work with muddy water. The water needs to be clear to kill the bacteria effectively. Hence, UV filters may not be a good option for areas where the water has a high amount of sediments.