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Reverse osmosis (RO)

What is Reverse Osmosis (RO)? Definition and How RO Works

Reverse osmosis (RO)

Reverse osmosis commonly-known as RO. Reverse osmosis is a technology that helps to remove hazardous chemicals and large contaminants and make the water fresh and clean. Its system works by creating pressure in the water through the semipermeable reverse osmosis membrane. To understand the function of Osmosisfirstly, you have to understand Osmosis is a natural phenomenon. It’s all about absorption. Here is a simple example- The roots of the plants absorb water from the soil. 


To understand the process of osmosis a simple figure is given below.


Reverse Osmosis (RO)

The given container contains two concentrated solutions one filled with high salt concentration and another filled with low salt concentration and both are divided by a semi-permeable membrane. You can see that the lower salt concentration solution moves towards the high salt concentration. The divider, a semi-permeable membrane, doesn’t allow the contaminants into the freshwater though it allows the atoms and molecules which are essential for drinking water. The reverse osmosis membrane is a semi-permeable membrane that allows the flow of water molecules and eliminates contaminates like- bacteria, organic, harmful salts, etc.


Minimum TDS Level for Drinking Water (Total Dissolved Solids)

How does Reverse Osmosis work?

There is no requirement for energy in the process of osmosis. But it is necessary to provide energy in the process of a reverse osmosis system. To work with reverse osmosis membranes, it is essential to apply high pressure or force water molecules from the semi-permeable membrane. The force power of water molecules must be higher to get pure and fresh drinking water. Higher the concentrated water higher the need for pressure around 95% to 99% contaminates or dissolved solids rejected by the membrane due to high pressure. RO system works with a cross filtration system that passes the water into two different ways: the clean water passing forcefully upward and the contaminated water or dirty water flows downward from the bottom pipe. If we talk about the blockage due to dirt and contaminants that present the membrane, cross filtration also helps to wipe out all the contaminants and keep the membrane clean for the next filtration system.


When it comes to removing the disease-causing organism and chemical contaminants, reverse osmosis removes not only these stubborn microorganisms but also their dead bodies from the water and gives pure water to the consumer.


It removes the Heavy Metals like it help in the removal of 95% of fluoride and mercury, 97% of chlorine and arsenic, 99%. Aquasana’s system performs a remineralization process which restores important and beneficial minerals including Calcium , Potassium and magnesium among others.


Reverse Osmosis is safer than using disposable bottles every day.

Using a reverse osmosis is more environmentally friendly than using plastic bottles, as all you can do is turn on the faucet to get fresh,  healthy and tasty water.


Nowadays, many restaurants have already  started using reverse osmosis water to wash the ingredients and in cooking also as it provides a clean canvas that allows the flavors and ingredients to shine. You can also use an RO system to make your home cooking a fresh environment


By using reverse osmosis uses approximately three times more water as they treat resulting from a high budget on your water bill.


Now, for the proper disposal of water all you can do is dispose of the wastewater into the sea, but it cants be applied for landlocks so you should consider an evaporation system for that.


If 2 liters of Water is input into the RO Purifier, it will give only one liter of

pure water. (this water can be used for Mopping, Gardening, and Outdoor washing purposes).


It uses high pressure (100–800 psi) to force the water through the semipermeable membrane which filters out molecules, ions, and solids.Microbiological contamination and desalinate water through this process.

Final words

So, the reverse osmosis system works with high pressure that filters the water and neglects all the contaminants and dissolved salt with the help of a semi-permeable membrane. Reverse osmosis helps to offer fresh water for the whole family.

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