How Does Reverse Osmosis Water Filter Work: The Ultimate Guide

Rate this post

How does reverse osmosis water filter work? Reverse osmosis, commonly known as RO, is one of the most popular ways to filter water because of its many benefits. The reverse osmosis water filter is one of the most popular ways to filter water because it removes many contaminants and is easy to use.

Reverse osmosis (RO) filtration is a method of removing many contaminants from water using a special membrane that allows only specific types of molecules through it. 

What is Reverse Osmosis

When you run your tap water through this process, it creates two separate streams: one with clean water and one with concentrated waste called wastewater. The wastewater can be used on plants or released back into nature—it’s okay!

The RO filtration process takes place inside a machine called an “under-sink” reverse osmosis system, which captures all sorts of nasty chemicals from your H2O so you don’t have to worry about them anymore!

How does Reverse Osmosis work?

How does reverse osmosis water filter work? Reverse osmosis is a water purification process that uses pressure to force water through a semi-permeable membrane.

How does Reverse Osmosis work
  • The reverse osmosis membrane allows water molecules to pass through but no other substances.
  • This process is similar to the way you would use a coffee filter, except the filter material used in reverse osmosis is much thinner than paper and can be made out of plastic or polymers with pores less than one nanometer wide!

What contaminants will Reverse Osmosis remove from water?

Reverse Osmosis Water Filters can remove a wide variety of contaminants from your water. Some of the most common contaminants that Reverse Osmosis filters remove include:

See also  How to Change Zero Water Filter: (Step-by-Step Guide)

Reverse osmosis is a great way to filter your drinking water because it removes impurities like:

  • Dissolved salts, including fluoride, nitrates and arsenic.
  • Particulates like silt, rust and clay.
  • Organic compounds like herbicides, pesticides and insecticides..
  • Bacteria and protozoa like E. coli and giardia lamblia.

Dissolved salts

The dissolved salts in your water can be harmful to your health. Fluoride is a mineral that naturally exists in water and is added to drinking water to prevent tooth decay. However, it’s also a toxic substance that can cause health problems.

To remove fluoride from drinking water, use an RO (reverse osmosis) filter that uses membranes made of cellulose acetate or polyvinylidene fluoride (PVDF). These membranes are designed specifically to remove fluoride from your drinking water while allowing other molecules like minerals and organic compounds through the membrane without affecting their quality or taste.


Particulates are tiny pieces of matter that can be suspended in water. Particulates can include silt, rust and clay. If you have a filter that removes particulates, you’ll need to clean it regularly to prevent them from clogging up your system.

Organic compounds

Organic compounds Example

The organic compounds are no longer used on crops, so they’re not present in your tap water. However, they are still present in the water that’s been treated by reverse osmosis. You can ensure that any and all pesticides and insecticides are removed from your drinking water by using a carbon filter to remove them before the RO process takes place.


Bacteria and protozoa are tiny organisms that can cause sickness or other health problems. Examples of bacteria include E. coli, giardia lamblia, and salmonella. The best way to avoid these microorganisms is by using a high-quality reverse osmosis filter like the one we sell at with an RO membrane that removes 99%+ of all bacteria, protozoa and cysts from your drinking water.

See also  De Ionising Water Filter For Car Washing?


Metals like lead, copper, aluminum and barium can be removed from water using a reverse osmosis water filter. The amount of metal removal is dependent on the type of filter you use. In order to remove metals like lead, copper and aluminum you need to have a carbon block or granular activated carbon (GAC) filter installed at the end of your RO unit. 

A GAC filter works by binding organic material with its surface area and then trapping it in its pores so that it can be released during an ozonation process or backwashed out as waste water. A GAC filter also removes some bacteria which helps keep your system clean while making sure that all those toxins are eliminated before they make their way into your drinking water supply.

Radiological contaminants

If you’re concerned about radiological contaminants like radium and uranium, an RO system can be a good solution for your home. Radium is found in small amounts in some rocks, soil and water. It’s also a decay product of uranium.

If you have an RO system installed at home or work, it’s important to remember that radium-bearing water sources may be present where the water has contaminated other parts of the building as well. 

For example, if there’s a radon gas leak in your basement from under your foundation wall (radon seeping into groundwater), then it’s likely that there are higher concentrations of radioactivity in the basement than on other floors of the building due to contact with groundwater.

Harmful substances

Reverse osmosis water filters are a great way to make the most of your tap water. Reverse osmosis is a process that uses pressure and other materials to remove harmful substances that can cause sickness or other health problems. The filter comes with an easy-to-use faucet attachment, so you can get filtered water whenever you need it.

See also  How Does Activated Carbon Filter Water?

The good news is that reverse osmosis water filters are very affordable, so investing in one is an excellent idea if you want more control over the quality of your drinking water.

Reverse Osmosis Performance & Design Calculations

In this section, we’ll give you the tools to calculate the performance of your RO system.

First, let’s talk about pressure drops and how they affect the design of an RO system:

Pressure Drop

Pressure drop is a measure of how much energy (pressure) is lost over a given distance in a pipe or tubing. It’s measured in psi per foot or bar per meter (1 bar = 14.5 psi). The lower the pressure drop, the better!

Flow Rate

Flow rate describes how much water passes through your filter every minute. It’s measured in gallons per minute (GPM). The higher this number is, the better!

Conclusion: How does reverse osmosis water filter work


Now you know how RO works, it’s time to go out and pick one up for yourself! If you have any questions about choosing the right model for your home, we are here to help. 

Sharing Is Caring:

Leave a Comment