How Does RO Work? What Are the Stages of RO+UV Water Purifiers?

Water purifiers have turned out to be a basic necessity in every home today owing to the increasing amount of water pollution that has reduced access to clean drinking water.

There are many types of water purification methods, but Reverse Osmosis (RO) is the most popular of all. This popularity is due to the fact that RO purification is capable of getting rid of dissolved impurities, bacteria, viruses and other pathogens. With an inbuilt TDS controller, you can also control the TDS level of drinking water. Thus, you have access to 100% safe and pure drinking water at all times. 

In this article, you can get to understand how RO works and the different stages involved in  RO+UV purifier.

How Do RO Purifiers Work?

RO removes pollutants from contaminated water when pressure forces the water through a semipermeable membrane. In this process, water flows from an area of high concentration (more pollutants) to an area of low concentration (fewer pollutants), thus resulting in clean drinking water. 

The RO system’s semipermeable membrane is built with small pores to block pollutants but let water molecules pass through. In the osmosis process, water is more concentrated as it flows through a membrane to get equilibrium on the two sides. However, RO obstructs pollutants from passing into the membrane’s less concentrated side. For instance, during the RO process, a volume or salt water, under pressure, leaves behind salts and lets only clean water pass through. 

RO+UV Water Purifier Stages

Nowadays, most advanced RO purifiers come with multiple purification processes. An RO+UV system is an example of such a purifier and is considered to be the best water purifier. Here is a look at the different stages involved in an RO+UV water purifier. The filtration stages are generally a combination of RO membrane, sediment filter, carbon filter, UV lamp and post-carbon filter. 

  • Pre-Filter: This is the first stage of an RO purifier, which removes large particles such as dirt, silt, sand, and other such sediments from the water. If not for this pre-filter, the RO membrane is more likely to get blocked due to exposure to chlorine and sediments. 
  • RO Membrane: RO membrane is the second stage of filtration. As explained earlier, water passes through a semipermeable membrane, where smaller impurities are blocked. This membrane is plastic, synthetic material that helps in obstructing chlorine, sodium, bacteria, viruses, and urea. RO purifiers are also effective at removing arsenic, chromium, lead, copper, fluoride and selenium. 
  • UV Lamp: The UV lamp in RO+UV purifiers disinfect the water by removing bacteria and killing other harmful pathogens. The UV rays destroy the disease-causing germs by attacking the core of their genetics, thus ceasing their reproduction capability. In this stage, 99.9% of pollutants are removed from water, thus making it safe for drinking. 
  • Activated Carbon Filter (Post-Filter): Before reaching the storage tank, water flows through an activated carbon filter. This stage removes any pollutants remaining in the water. It also removes toxic compounds and bad odour from water, thus making it completely safe for drinking

These are the various purification stages in an RO+UV purification system. Apart from these, there’s also a TDS controller, which helps in retaining the necessary natural minerals in the purified water. The sophisticated RO water purifier price  available in the market today also come equipped with a technology that helps in avoiding water wastage by recirculating the rejected water back to the overhead tank. 

Now that you know how RO works and the different stages involved in RO+UV water purification, you would have understood how effective these purifiers can be at removing contaminants from water. So, you can be assured of having access to 100% pure and safe drinking water.

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