Insight on small RO plants for homes
The process by which the solvent penetrates the semipermeable membrane from a rarer medium to a denser medium is called permeation. In other words, due to the concentration gradient, a natural process of permeation occurs, and water molecules enter the raisins through the raisin shell. The propulsive force here is the concentration gradient. If this infiltration process can be reversed with another propulsion, this is called reverse osmosis. In fact, if there is a concentration gradient across the membrane, a pressure called osmotic pressure should be applied to limit the penetration of the entire semipermeable membrane. From there, the idea of ??reverse osmosis comes from the application of pressure. In practice, reverse osmosis is the process of using pressure to pass a solvent through a semipermeable membrane from a region of high solute to a region of low concentration.
The reverse osmosis water purification system uses a polymer-based semipermeable membrane to filter the salts present in the water. It also filters microorganisms present in the water. As the water molecules pass through the semipermeable polymer membrane, a pressure higher than the osmotic pressure is applied to the impure water containing excess minerals and impurities. Since the membrane is semipermeable, impurities such as salts and minerals cannot pass through. Therefore, pure water is obtained with a reverse osmosis cleaning system on the opposite side of the semipermeable membrane.
As pure water is removed from the raw water to be treated, the concentration of dissolved substances will continue to rise. This will increase the osmotic pressure. The semipermeable membrane of the reverse osmosis unit has finite resistance to increased pressure, although the pressure applied must be increased to maintain further purification. To maintain a semi-osmotic or reverse osmosis membrane, the reverse osmosis treatment system disposes of residual water through the wastewater outlet. This drained hard water is usually not suitable for daily use but can be used for purposes such as flushing toilets.
The reverse osmosis water treatment system consists of a motor pump for pressurization, a wastewater outlet, a reverse osmosis membrane (semipermeable membrane), and a water storage tank. Modern reverse osmosis equipment also includes UV light treatment and pre-reverse osmosis carbon and fabric filters. UV light kills microbes, and charcoal and cloth filters prevent silt and other large contaminants from reaching reverse osmosis and extend their shelf life.
Is RO water healthy?
There is concern that desalinated RO water may be deficient in important minerals such as calcium, magnesium, zinc, sodium, potassium, and carbonates. The essential mineral concentration can be adjusted by controlling TDS level of RO plant. Most reverse osmosis systems put water into a "post-treatment process" that adds salt to a TDS of approximately 300 mg/l. It is essential for everyone in this era of pollution, to install RO plants in their houses. It can not only provide water for drinking purposes, but for washing, bathing, etc.