water treatment


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Sea Water Desalination Systems

Desalination Status Overview Reverse osmosis (RO) desalination is a treatment process for production of fresh, low-salinity potable water from saline water source (seawater or brackish water) via membrane separation. The mineral/salt content of the water is usually measured by the water quality parameter named total dissolved solids (TDS), concentration of which is expressed in milligrams per liter (mg/L), or parts per thousand (ppt).

Brackish water desalination systems

Reverse Osmosis (RO) is a water purification technology that uses a semipermeable membrane to remove ions, molecules, and larger particles from drinking water. In reverse osmosis, an applied pressure is used to overcome osmotic, a colligative property, that is driven by chemical potential differences of the solvent, thermodynamic parameter. Reverse osmosis can remove many types of dissolved and suspended species from water, including dissolved salt and bacteria, and is used in both industrial processes and the production of potable water. The result is that the solute is retained on the pressurized side of the membrane and the pure solvent is allowed to pass to the other side. To be "selective", this membrane should not allow large molecules or ions through the pores(holes), but should allow smaller components of the solution (such as solvent molecules) to pass freely.

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