Desalination & Brine Problem
WORLDWIDE FRESH WATER SHORTAGE
Inadequate clean water is now beyond the crisis stage in many parts of the world fueled by population growth, drought, pollution and soil contamination. Policy makers and water experts throughout the world are desperately searching for newer, safer, cleaner and more affordable ways to sustainably produce fresh water.
Desalination presents an obvious answer to the global water shortage. However, all existing forms of desalination technology pose two major problems: high cost and environmental damage from disposing of brine. Most often, desalination plants discharge brine into the world’s oceans where it is killing marine life and causing catastrophic environmental damage.
EFD is the worldwide patent holder of the only utility scale, environmentally friendly, and low cost desalination technology that eliminates the production of environmentally toxic brine in the desalination process. EFD’s technology can quench the worlds’ need for desalinated water sources without damaging our global environment or marine ecosystem resources.
Current Desalination Technologies
The main technologies used today for desalination and reclaiming polluted or brackish water are Reverse Osmosis and Thermal Distillation. Both systems produce a brine byproduct. For every gallon of fresh water produced by these technologies, over a gallon of environmentally toxic brine byproduct is produced made up of concentrated saltwater mixed with noxious chemicals.
Reverse osmosis is the process of separating dissolved salt and fresh water by forcing fresh water through an osmotic membrane, leaving a salt concentrate on one side of the membrane and fresh water on the other. This requires substantial amounts of energy to overcome the osmotic pressure and force the water to pass through the membrane. The higher the pressure, the faster the fresh water can pass through the membrane and the higher the energy costs. In addition, all existing RO systems run on electricity, a much more expensive energy source than natural gas.
Thermal distillation processes, such as multi-effects distillation (MED) and multi-stage flash distillation (MFD) utilize a series of stages or effects to heat sea water and capture the desalinated vapor which is condensed into fresh water. While distillation is a widely utilized method of desalination, the process is problematic in several ways. Heating salt water to a boiling point causes the salt to build up around the sides and bottom of the heating chamber, causing scaling that can corrode, plug pipes, and limit heat conductivity resulting in maintenance, operational issues and high operating costs.
EFD utility scale brine free desalination is powered entirely by natural gas, which is 7.4 times less expensive than electricity, and reuses 95 percent of the thermal energy expended, ensuring maximum efficiency throughout the system. The use of electricity by current desalination technologies results in desalinated water that is 2.4 times more expensive than water that could be produced by EFD processes.
EFD Corp. technology is the only utility scale desalination technology without the production of brine. Our disruptive technology will become the worldwide industry standard for desalination and expand desalination globally without environmental damage.