Reverse osmosis water purifier advantages and disadvantages

Reverse osmosis water purifier is a set of water purification system, the core component is RO membrane, which has the highest filtration precision. Reverse osmosis water purifier filtration out of the water is clean and hygienic, does not contain any harmful substances, is very safe for the body. The following is a small introduction to the advantages and disadvantages of reverse osmosis water purifier, together.

Reverse osmosis water purifier principle

Reverse osmosis water purifier mainly utilizes the principle of reverse osmosis, reverse osmosis is a pressure difference as the driving force, the solvent from the solution separated from the membrane separation operation. Pressure is applied to the material on one side of the membrane, and when the pressure exceeds its osmotic pressure, the solvent will reverse osmosis against the direction of natural osmosis. Thus, in the low-pressure side of the membrane to get through the solvent, that is, permeate; high-pressure side to get concentrated solution, that is, concentrate. If you use reverse osmosis to treat seawater, you get fresh water on the low-pressure side of the membrane and brine on the high-pressure side.

The membrane that is selective for the permeable material is called semi-permeable membrane. Generally, the film that can only pass through the solvent but not the solute is regarded as the ideal semi-permeable membrane. When the same volume of dilute solution and concentrated solution were placed on both sides of a container, separated by a semi-permeable membrane, the solvent in the dilute solution will naturally pass through the semi-permeable membrane to the concentrated solution side of the flow, the concentrated solution side of the liquid surface than the dilute solution of a certain height, the formation of a pressure difference to achieve osmotic equilibrium, this pressure difference is osmotic pressure. The size of the osmotic pressure is determined by the type, concentration and temperature of the concentrated solution, independent of the nature of the semi-permeable membrane. If the concentrated solution side to apply a pressure greater than the osmotic pressure, the concentrated solution of the solvent will flow to the dilute solution, the direction of the flow of such solvents and the direction of the original direction of the opposite osmosis, this process is called reverse osmosis.

Reverse osmosis water purifier advantages

One, reverse osmosis membrane purification technology, filtration accuracy of 0.01 micron;

Two, can thoroughly purify the brackish water, high hardness water, as well as fluoride, lead, manganese, and other highly toxic substances in the water;

Three, the user most directly connected to the tap water pipe or directly injected into the tap water, you can get the fresh alkaline spring water, do not have to buy the market barrel water, not to buy the water. Purchase the market barrel water, so greatly save the cost of drinking water due to the purchase of barrel water, but also more fresh than barrel water.

Disadvantages of reverse osmosis water purifier

One, reverse osmosis water purifier water is too pure, the human body drinking reverse osmosis water is easy to cause the loss of minerals in the body, especially the loss of calcium ions in the human body, resulting in osteoporosis. But can be supplemented from food.

Two, reverse osmosis water purifier generally after five levels of filtration: 5 micron PP cotton, activated carbon filtration, 1 micron PP cotton, reverse osmosis membrane, T33, reverse osmosis membrane according to the water quality should be replaced regularly, generally available 1-2 years, reverse osmosis membrane filter material needs to be replaced frequently before the first three levels, generally 3-6 months.

Three, the amount of wastewater, while the need for electricity, and installation is relatively complex and troublesome, because the water purifier using multi-stage filtration, so the auxiliary cartridge replacement is frequent, resulting in higher costs at the same time, but also prone to breeding the hidden dangers of secondary pollution. Reverse osmosis water purifier to use the pump, need to be energized, there are electrical safety issues, more joints, high water pressure, failure rate and leakage probability is relatively high, the structure is complex, the price cost is higher.