This is the process by which two liquids of different concentrations are separated by a permeable membrane. In this process, the fluid with a lighter concentration will move toward the liquid with the higher concentration through the membrane.
This process occurs naturally and a good example is when you swim in really salty water, the water in your body will use your skin as a membrane and move towards the salty water.
How does it work?
Forward osmosis utilizes the use of a semi-permeable membrane and a draw solution to separate water from dissolved salts. It does not use hydraulic pressure which makes it totally different to reverse osmosis.
In this process, water diffuses through the semi-permeable membrane from a lower concentration region to a higher concentration region so as that both sides are at equilibrium.
This works on the opposite principle of forward osmosis. In this process, a higher concentration liquid is forced to flow to a lower concentration side by use of mechanical pressure.
This is in the case of water purification system where the semi-permeable membrane effectively traps the unwanted salt thus leaving us with pure water to consume.
How does it work?
Reverse osmosis utilizes a semi-permeable membrane and mechanical pressure to purify water. In this process, you want to move water from a highly concentrated solution through the membrane.
To do this you have to overcome osmotic pressure by using hydraulic pressure to force the water through the membrane thus leaving the salt behind.
Differences between forward osmosis and reverse osmosis
- Energy usage
Forward osmosis, on the other hand, relies on osmotic pressure which occurs naturally and thus does not require any energy for the process to occur.
- Lifecycle cost
From the information, we have provided it is clear to see that forward osmosis technology has many more advantages compared to reverse osmosis technology.
Forward osmosis technology is more appropriate in areas where the water is extremely salty but RO systems can be used in homes and regions where the water is not too salty.
You can get your RO or FO systems at 360 WATER TREATMENT which is the home for the best water purification systems and professional services. We are looking forward to your call to get the best systems in the market right now.