Technology » Drinking Water Purifier - Technology

Technology of Reverse Osmosis based water purification systems:
1. Reverse Osmosis based water purification systems are the best available systems, which can remove almost all kinds of impurities/ contaminants present in water. These include inorganic chemicals, organic compounds, heavy metals, pesticides, microbes, etc. Purity of RO system treated water approaches that of distilled water.

2. Purification by Reverse osmosis based systems does not depend on the quality of raw water and can purify water containing all types of impurities. The reduction of Total Dissolved Solids (TDS) in water by RO membrane is 90-97%.

3. However, Reverse Osmosis not only removes harmful contaminants that may be present in water, it also strips many of the good, healthy minerals from the water as well. These minerals serve vital functions in the body’s system, besides providing good taste to water.

4. Reverse osmosis systems cannot preferentially remove harmful impurities as well as retain beneficial minerals.

5. Hence, in order to improve taste and to regulate mineral content in water, other companies employ a technology in which 100% of raw water is not passed through RO membrane. A partial quantity of water is passed through RO membrane, whereas remaining portion of water is by-passed through RO membrane and goes directly to other filters, such as UF membrane or UV sterilizer. The water going directly to UF and UV sterilizer may not be safe since it is not capable of removing all types of contaminants. UV can only deactivate any microbial contamination in water, i.e. bacteria and viruses. UV radiation cannot remove heavy metals, pesticides, and other inorganic/organic impurities. Similarly, UF membrane can remove only bacteria, viruses and some particulate contaminants but cannot remove heavy metals and pesticides. These impurities have potential health hazards like cancer, delayed development of physical and mental faculties, kidney damage, etc. Hence, water purification systems using this technology are not effective in providing 100% safe water.