Mainly Treated Impurities

• Salt

The main component of seawater is salt, so the main task of desalination devices is to remove salt.  Commonly used desalination technologies include distillation and reverse osmosis, both of which can effectively remove salt.

• Suspended substances

Seawater also contains many suspended substances, such as sand, silt, algae, etc.  These suspended substances not only affect the transparency of the water body but also cause wear and tear to the equipment.  Desalination devices can remove suspended substances through methods such as filtration and sedimentation to ensure that the produced freshwater is clean and transparent.

• Organic matter

Seawater also contains a lot of organic matter, such as proteins, fats, sugars, etc.  These organic matters have varying degrees of influence on the drinking and industrial use of freshwater.  Desalination devices can remove organic matter through methods such as biofilm reactors and biofilters to prevent freshwater from being contaminated.

• Heavy metals and trace elements

Seawater also contains many heavy metals and trace elements, such as lead, mercury, cadmium, arsenic, copper, zinc, manganese, selenium, potassium, calcium, magnesium, etc.  These heavy metals and trace elements have a significant impact on the quality of freshwater and can even endanger human health.  Desalination devices can remove heavy metals and trace elements through methods such as far infrared rays and ion exchange.

• Bacteria and viruses

Seawater also contains many bacteria and viruses, such as Escherichia coli, Salmonella, Vibrio cholerae, Burkholderia mallei, etc.  These bacteria and viruses pose a threat to the hygiene of freshwater and can cause serious health problems.  Desalination devices can remove bacteria and viruses through disinfectants, ultraviolet sterilization, and other methods.

In conclusion, desalination devices can remove many impurities and substances to ensure that the final produced freshwater is clean, transparent, hygienic, and healthy, meeting the needs of human drinking and industrial water use.