Ordinary water drawn from the wells or supplied by the municipal authorities through the pipes often contains contaminants. It needs to be purified with appropriate cleaning process. Though the local water supplying authorities make arrangements for doing so yet they do not suffice to meet the increased demand of purified water. That’s why the residents prefer to own their own water-purifying systems in the shape of Reverse Osmosis systems. Launched in the 70s in North America, this technology involves use of pressure that pushes the water through the semi-permeable membrane called as RO, i.e. the Reverse Osmosis. It is useful in removing the harmful compounds and contaminants from the water that is converted into drinkable and usable one for other purposes.
Reverse Osmosis Desalination Process
This is the specific process meant for purifying the ordinarywater. It is freed from the harmful compounds and contaminants that are removed with the help of Reverse Osmosis process. Certain amount of pressure is used to push the water with the help of a semi-permeable membrane known as RO. It helps in removing the waste and toxic substances from the ordinary water.
It may be noted that the particles that are smaller than the water molecules are retained in the drinking water. One section of the water contains the large ions and molecules. Drinking water left in the smaller part is freed from harmful elements including arsenic, nitrates and lead etcthat may put harmful effects on our health. It is the water desalination process in the RO system that helps to remove the toxic and waste elements from water.
This process may be referred to as the one that resembles with our kidneys that absorb water from our blood. Likewise roots of a plant that absorb water from the soil also help in purification of water. Thus, the process of purifying water associated with the RO system is greatly useful for human beings that get pure water for drinking, cooking and other such purposes.
The Reverse Osmosis Desalination Process
Is the one wherein a delicate saline solution can move to a stronger one. It is exactly reverse of the osmosis process and involves energy-application. The RO membrane, i.e. the semi-permeable membrane permits the water molecules to get through. It is able to block large numbers of dissolved salts, organics, bacteria and pyrogens etc. Extra pressure is needed to enable the water get through the RO membrane. This pressure is larger than the one applied in osmosis. This bigger pressure helps in deionizing, demineralizing and eliminating larger numbers of contaminants from the water that becomes drinkable, safe and pure. The solute is left on the membrane’s pressurized section with this process. The pure solvent flows to the other section.
The Reverse Osmosis Desalination Process
consists of the following three stages
Pre filter stage
The water that enters the reverse osmosis is passed through a pre-filter that is meant to shield the automatic switch off and the membrane from being blocked with the debris. Larger particles including the deposits and the rust get filtered out under this stage. It is helpful to enhance the life of the RO membrane. The system is able to handle the minor pollutants that are harmful. Few RO systems are equipped with activated carbon for eliminating both the pollutants and chlorine particles etc that pollute the water.
The water gets through the membrane that helps to eliminate the larger quantity of miniscule particles that are washed to the drain. The Microscopic Pores of the membrane enable the hydrogen and oxygen molecules to get through. Larger numbers of contaminants and liquefied solids get rinsed into the water stream’s drain and removed out of the RO system.
The Final Filtration Stage
The water gets transferred to the storage tanks once it gets filtered through the membrane. More water is generated by the system after the automatic shut-off transmits the relevant signal. The water gets through the last filtration stage, i.e. the carbon filter when the faucet is switched on and water is drawn from the storage tank. The remaining tastes and odors etc get removed from the water and we are able to get purified water that is free from bad smell, contaminants and other harmful elements. Thus we get nice drinkable water with the help of Reverse Osmosis Desalination Process.
This process is the best solution for getting purified water for drinking and other useful purposes.