Water plays a vital role in survival of human beings in addition to food and water. With each day growing, the level of water contamination is increasing rapidly. Today it has become very important to install water purifier in homes, schools and offices to have access to pure drinking water.
RO means ‘reserve osmosis’. This technology is gaining tremendous popularity in terms of getting the most purified form of water. When we talk of osmosis in general, it means that water molecules with lower salt content moves towards a solution with higher salt content through a membrane. In case of Reserve osmosis the process is completely reversed. Here the higher concentrated solution moves towards a lower one because water pressure applied to the membranes is greater than osmotic pressure of the contaminated water. Due to increased pressure, the water molecules start forming hydrogen bonds which get attached to the membrane matrix. When water molecules pass through the membrane it leaves the impurities behind. This water is further de-ionized. So that the remaining extra impurities can be removed. In reverse osmosis micro-organism like bacteria and pyrogens are often removed.
The RO technology is highly efficacious in improving the purity of water which is directly proportional to TDS level. Now you might wonder what is this TDS level? In simple terms TDS stands for totally dissolved salts. It determines the hardness and softness of water. The indication of 0-80 is considered to be the purest form of water which is ideal for consumption; 80-150 indicates pure water but anything beyond it would mean the water needs to be purified. Coming back to the explanation of RO, It can be said that membrane quality is the ultimate game changer in the entire process. The replacement of cellulose acetate membranes with superior quality thin film composite membrane has increased the salt rejection rate to absolute.
Although there are different types of purification technologies available in the market RO, UV, UF and combination of RO+UV+UF but RO technology is considered best to meet the need of water purification and filtration. UV technology involves the use of ultraviolet rays to destroy germs in water whereas UF technology involves the use of membranes to remove pathogens. But both these can purify water with only 0-80 level of TDS. It is only the RO technology which purifies water with TDS level above 80. Hence, it is the most popular, effective and proven technology of water purification.
RO system removes all the impurities and produce excellent quality of drinking water. The RO technology which makes use of its semi permeable membrane to remove all kinds of water impurities to make water perfect for drinking is gaining popularity over other technologies.