Water is the basis of human survival, is an important part of life.
The global imbalance of water resources and the growing water crisis make the search for innovative water solutions critical. Many countries and relevant organizations are taking active measures to protect and manage freshwater resources, including limiting industrial and agricultural water use, encouraging water conservation, improving water efficiency, improving water quality and promoting awareness of water conservation.
In this context, desalination technology has come to the fore as a potential solution that promises to provide a sustainable source for the growing demand for fresh water.
What is seawater desalination?
Desalination is a process that converts salty sea water into fresh water that can be used for drinking or for agricultural, industrial and other purposes.
Seawater contains a lot of salt, as well as a large number of calcium ions, sodium ions, magnesium ions and other metal ions as well as suspended substances, microorganisms, direct drinking will cause harm to human health.
The main desalination technologies include reverse osmosis, distillation, electrodialysis, etc., which remove salt and other impurities from seawater through different physical and chemical processes to obtain fresh water.
Reverse osmosis membrane: the technological pillar of seawater desalination
Reverse osmosis membranes are highly selective semi-permeable membranes that allow water molecules to pass through while preventing the permeability of salt ions and other impurities. This selective property, based on the membrane's microscopic pore structure and chemical properties, allows water to be efficiently separated from the high-salinity seawater, producing a clean, desalinated water source.
Seawater desalination equipment takes reverse osmosis membrane as the core process, using the selective permeability of reverse osmosis membrane and pressurizing by high pressure pump, the water molecular solvent in seawater can pass through the reverse osmosis membrane and retain the salt plasma.
The pore size of the reverse osmosis membrane is very small, which can effectively remove the dissolved salts, colloids, microorganisms and impurities in seawater, and then achieve seawater desalination through sterilization treatment and other processes to provide stable quality fresh water resources for human beings.
