Reverse osmosis filtration membrane: how does it work?


Reverse osmosis filtration membrane is a highly effective method for water filtration, widely used to purify water by removing total dissolved salts and other contaminants. Understanding how reverse osmosis filtration membranes work and knowing when to change them is crucial for maintaining the efficiency of your water filtration system.

What is reverse osmosis through filtration membrane?

Reverse osmosis is a water filtration process that removes impurities by forcing water through a semi-permeable membrane. This membrane acts as a barrier, allowing only pure water molecules to pass through while blocking dissolved salts, bacteria, and other contaminants. The result is purified water that is safe for drinking and other uses.

How do reverse osmosis filtration membranes work?

The core component of any reverse osmosis water filtration system is the semi-permeable membrane. This membrane is designed to filter out total dissolved solids (TDS) in water, effectively reducing contaminants to produce clean and safe drinking water. Here’s a step-by-step breakdown of the reverse osmosis process:

  1. Pre-filtration: water first passes through a pre-filter, which removes larger particles such as sediment and chlorine. This step protects the RO membrane from damage and extends its lifespan.
  2. Reverse osmosis filtration: the pre-filtered water is then pushed through the reverse osmosis membrane under pressure. The semi-permeable membrane allows water molecules to pass through while trapping dissolved salts, bacteria, and other impurities.
  3. Post-filtration: the purified water may go through an additional post-filter to remove any remaining tastes or odours, ensuring the highest quality of drinking water.
  4. Storage and use: the filtered water is stored in a tank, ready for use. When you open your faucet, fresh, purified water flows out.

When to change reverse osmosis filtration membranes?

Knowing when to replace your reverse osmosis membrane is vital to ensure continuous water purification. Here are some indicators that it might be time to change your membrane:

  1. Decreased water flow: if the flow of water from your reverse osmosis water system has significantly slowed down, it could be due to a clogged membrane.
  2. Increased TDS levels: use a TDS meter to regularly check the water quality. A rise in total dissolved salts in water indicates that the membrane is no longer effectively filtering contaminants.
  3. Taste and odour changes: if the taste or smell of your drinking water changes, it might be time to replace the membrane.
  4. Usage timeframe: typically, RO membranes should be replaced every 2-3 years, depending on the water quality and usage.

Benefits of reverse osmosis filtration membrane

Types of reverse osmosis systems, and reverse osmosis filtration membranes

There are various types of reverse osmosis water filtration systems available, each designed to meet different needs:

Reverse osmosis is a reliable and efficient method for purifying water, ensuring you have access to clean and safe drinking water. By understanding how reverse osmosis membranes work and recognizing when to change them, you can maintain your water filtration system’s performance and enjoy the benefits of pure water.

For more information on reverse osmosis systems and other water filtration solutions, visit our website, explore our range of products designed to meet all your water purification needs and contact us. We offer reverse osmosis water filtration systems, reverse osmosis drinking water filter systems, and other advanced water filtration technologies to provide you with the purest water possible. Also don’t forget to follow us on LinkedIn!