What Is RO Water Purifier? How It Works?

Water is the most needed thing for all living beings for living a healthy life. Without water, life can’t be imagined. But, because of several reasons, water is being polluted day by day. By drinking the polluted water, you can put your health into danger. Polluted water can cause several diseases such as diarrhoea, stomach pain, skin problems, typhoid, etc. To prevent these health problems, RO purifier is a fruitful solution. This system can provide you with healthy water for living a healthy and happy life. Also, it can enhance the taste of the water.

RO purifier is an advanced technology which is adopted by numerous people for the purification of water. RO is the short form for Reverse Osmosis. This filtration system can eliminate most of the contaminants from water and provide you with the purified water. You can consider installing this system in your home to ensure better health of your family.

As you know, the process of passing the molecules through a semi-permeable membrane from a less-concentrated solution to a more concentrated solution is known as osmosis. The reverse process of that is called Reverse Osmosis or RO. The RO membrane is just as a filter to separate harmful particles from the water. It allows the water particles through it and blocks the unwanted contaminants. By doing this, it ensures that you are getting pure water for drinking. Ro purifier uses a simple method to produce pure water.

Let’s know, how RO purifier works?

Working of RO purifier:

RO purifier applies an external force to the water to allow it to pass through a semi-permeable membrane. This process separates the contaminants and allows pure water for you to drink. RO purifier can remove the impurities as per the size and shape of them. However, you can’t see them by naked eyes. As it allows the water particles and blocks the other particles, it can block the impurity particles that are larger than the water particles. It can block microorganism, viruses, ions, pesticides, harmful chemicals and other contaminants. This purification system can remove the particles that are impossible to remove through other purification systems. So, this is a popular system among its peers and most of the people opt for this system.

To understand its working in detail, let’s discuss in the step by step process.

Step 1:

In the first step, the large particles such as chlorine, dirt, sand, and other solid particles get removed from the water. This step is known as pre-filtration. As the big particles are removed in this step, it protects the membrane from getting blocked by large sediments. So, this step is also known as carbon block filter or sediment filter. This step helps in improving the life of the membrane. Because of the carbon filter, bad odour of the water gets reduced with the toxic elements.

Step 2:

In this step, water passes through the semi-permeable membrane under pressure. The membrane is made of synthetic plastic material. It allows the water molecules to pass through it. This membrane doesn’t pass several harmful particles such as chlorine, calcium, sodium, lead, copper, chromium, urea, radium, barium, cadmium, etc. This membrane is perfect to block the small particles. Most of the solid particles are removed in this step.

Some RO systems use TFC or thin-film composite in the construction of the membrane. This membrane can offer resistant to breakdown due to bacteria. This type of membrane can eliminate the harmful particles up to 95% to 97%.

Step 3:

RO purifiers also include a UV lamp to destroy the microorganisms such as bacteria from the water. The UV lamp can kill the bacteria and other harmful microorganisms present in the water. The powerful UV rays kill the microorganisms that can cause harmful effects in the water. It directly kills their genetic core to prevent their growth. In this step, around 99.99% of microorganisms are killed to provide you with cleaned water. This step ensures the water is free from the harmful living organisms so that you can drink it without any worries.

Step 4:

In this step, water is forcefully passed through a hollow fibre membrane to eliminate the remained impurities from the water. This process of purifying the water is known as ultrafiltration. With this process, the RO purifying system ensures that cleaned and healthy water gets delivered to you.

Step 5:

For the removal of remaining contaminants from the water, RO purifier system includes a post-carbon filter. After this filtration process, pure water is stored in the water tank for drinking. The stored water is ideal for drinking. This process gives the last polish to drinking water. This process can reduce the remaining odours and particles from the water. After this process, you can get fresh and tasteful water.

So, like this way, RO purifiers work. They are perfect to use in homes as well as offices. As this technology eliminates all the harmful particles from the water, you can install this system in your home to ensure the health of your family. The cosmetics industry, food processing industry, pharmaceutical industry, seawater desalination industry, etc. use RO purifiers to get pure water for their processing.

RO purifiers can work with soft water perfectly. So, before inputting the water to the RO system, you should ensure that it is not hard for the system. Hard water can damage the parts of the RO system. If you need to clean hard water, you can install a water softener before installing the RO system.


For a healthy life, pure and healthy water is important. As water pollution is the biggest problem of today, many companies have designed water purifying systems to provide healthy water to people. RO purifying technology is considered to be the best purifying solution to get clean water. It can produce healthy water from unhealthy water to be consumed. It works in a simple process. If you are looking for a water purification system to install in your home, you can consider installing an RO purifier to get the desired results.

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