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What is RO (reverse osmosis)?
Source:DEMIH INDUSTRY | Author:demihwater | Publish time: 2019-03-09 | 129 Views | Share:
What is RO(reverse osmosis)?
What is RO(reverse osmosis)?
(reverse osmosis RO) refers to the process of applying external pressure higher than solution osmotic pressure to the raw water side of the semi-permeable membrane. When raw water passes through the semi-permeable membrane, only water is allowed to pass through, and other substances are not allowed to pass through and are intercepted on the surface of the membrane.


Reverse osmosis (RO) is usually called ultrafiltration (UF). This method separates seawater from fresh water by using semi-permeable membranes that only allow solvent to penetrate but not solute to penetrate. In general, freshwater diffuses to the seawater side through the semi-permeable membrane, so that the liquid level on the seawater side rises gradually until a certain height stops. This process is infiltration. At this time, the static pressure of the water column on the side of the sea water is called osmotic pressure. If the external pressure on the seawater side is greater than the osmotic pressure of seawater, the pure water in seawater will reverse osmosis into fresh water. The biggest advantage of reverse osmosis is energy saving. Its energy consumption is only 1/2 of that of electrodialysis and 1/40 of that of distillation. Therefore, since 1974, developed countries such as the United States and Japan have shifted their focus of development to reverse osmosis.

What is RO(reverse osmosis)?

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