How reverse osmosis works ?
Reverse Osmosis, abbreviated and popularly called RO, is the process to remove unwanted minerals and ions from water by pushing it through a membrane, working under Reverse Osmosis principle. The membrane used in this regard is Semipermeable. In the context of water filtration, RO is a commonly used term. For instance, the market has the availability of water filters, working on this process. These filters are effective in cleaning water and making it suitable for human usage. Here is a synopsis of how the process works.
How the Reverse Osmosis Process Works
This process involves the application of a high-pressure pump that enhances the pressure on the side that contains water with an excessively high extent of pollutants. Subsequently, the pump forces the contaminated water to pass through a semipermeable filter. This will leave behind all the impurities in the stream of refuse. The extent of pressure applied depends on the concentration of the salt in the water stream. If the concentration of salt is high, the pump increases the extent of pressure applied to combat the Osmotic pressure.
The filtered water is called Permeate water. On the other hand, the stream that did not find a way through the membrane and features contaminants in very high concentration is known as the reject stream.
Once the water stream enters the reverse osmosis membrane, under excessive pressure, the water molecules start passing through the membrane. As a result, the dissolved impurities cannot pass through the membrane. Then, these impurities are disposed through the reject water stream. Now, you can either drain off the reject stream or recycle it into the supply of feed stream to preserve water. Once this step is performed, the water can lose the impurities to the extent of 99%.
What impurities are eliminated through the Reverse Osmosis process?
This process shows a wonderful performance in treating surface, brackish, as well as underground water. The process works equally well for applications of small or large flows. You will find various industries applying this process to get a supply of safe water.
For instance, Pharmaceutical, Foods & Beverages, as well as manufacturing and process industries, depend on this process to treat contaminated water. In addition, you will find water treatment companies utilizing this process to treat water for domestic, commercial, and industrial uses. In addition, you will find water filters in houses working on the RO process.
The Reverse Osmosis process can eliminate the impurities and pollutants to the extent of 99%. The membrane will reject the impurities, depending on the size of the molecules. Keep in mind that this process is not that effective in eliminating gasses, as well as highly ionized molecules. It is for this reason that water treated through RO filters feature pH levels lower than the usual extent.
On the whole, the RO process is highly effective in treating water loaded with salts and minerals, making it safe for human consumption and various uses. Check out How to safely drink tap water here.