Reverse Osmosis Technology – How does Reverse Osmosis Work?
the movement of solvent molecules through a selectively permeable membrane into a region of higher solute concentration, aiming to equalize the solute concentrations on the two sides
After the explanation of osmosis, it is easy to understand the mechanism of reverse osmosis, which is simply the other way round of osmosis.
Pressure is applied on the contaminated water(right of diagram). Water molecules will be forced to penetrate the permeable membrane. Larger contaminants like lead, copper, sand or mud will be too large to go through the membrane so they are trapped on the right side. Overall clean water can be acquired on the left side of the membrane, where there is higher water concentration, and less contaminants.
By applying pressure, it also speed up the whole reverse osmosis process. Clean water can be generated in less than a minute.
Reverse Osmosis Water Filter Machanism
Back to the RO system providing us with clean water. Imagine the above process of reverse osmosis is operating in a 5-stages RO system for 5 times by adapting 5 filters, and each filtering will target in removing different contaminants, the filtered water would be purer after each stage. That is why the more stages a RO system is involved, the cleaner water it could generate. But for general usage, over filtering the water for more than 5 stages may not be that necessary plus it could overload the system and delay the flow rate of the faucet.
By looking into how the reverse osmosis water filter works, it is easy to figure out how it benefits us and how different it is when compared to other water filtering solution. When it comes to providing clean drinking water, RO system is the best affordable solution on the market in a long run for health-concerned families.