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General Information About Water Desalination

Less than 1% of the global fresh water supply is potable. Seawater and brackish water can be converted to drinkable water through reverse osmosis.

While osmosis is a naturally occurring process where solvent molecules spontaneously enter through a semi-permeable membrane into a higher solute concentrate, reverse osmosis purification requires an external force to occur.

Reverse osmosis desalination is a process that purifies seawater or contaminated and undrinkable water sources using osmotic pressure to push salt water through a membrane. The result is water devoid of dissolved salts and harmful content.

The seawater membranes used in desalination systems remove salt, bacteria, viruses, protozoa, and cysts, from the raw water. This produces fresh and potable water. Because of this, reverse osmosis is one of the most absolute purification processes, and is used by militaries, hospitals, and communities worldwide.
 

Viruses Hepatitis A, Norwalk Virus, Rotavirus, Poliovirus
~0.02 – 0.2 microns
Bacteria E-coli (Escherichia coli), Salmonella (Salmonella typhimurium), Cholera (Vibrio cholerae)
0.2 – 5 microns
Protozoans Amoeobiasis (Entamoeba histolytica)
1 – 15 microns
Cysts Giardia lamblia (Giardia intestinalis), Cryptosporidium (Cryptosporidumparvum)
1–<1 microns hdd

 

Membrane Filtration Spectrum

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October 17, 2016
Gaetano Mura's Solo Circumnavigation with PowerSurvivor 40E

We are proud to sponsor Italian sailor Gaetano Mura as he sails single-handedly non-stop, 25,000 nautical miles around the world.