The Technology

Our wind powered desalinization plants have been pre-configured to maximize performance, deliver low cost water, and operate with minimal oversight.

The Reverse Osmosis Desalinization System:

At the heart of the desalinization plant is the filtration system. Multiple rows of filters are aggregated into what are called ‘stacks’ to process large quantities of clean water to World Health Organization (WHO) standards.stacks in container

Pre-engineered systems are available to provide between 1,433 cubic meters/day (378,600 US gal/day) up to 5,732 cubic meters/day (1,514,394 US gal/day), with smaller or larger sizes also available.

The water to be treated is pumped at very high pressure through these stacks in what is called a ‘reverse osmosis’ (RO) process, where impurities are removed. Electrical energy is used to run the high pressure pumps, along with other smaller pumps that are used to fill various tanks and transfer water within the plant and to the distribution network.

The RO stacks used in the Wind4Water™ program are manufactured by Water Management Group of Coral Springs, FL. WMG ships RO desalinization plants around the world, and has been working with AED to customize their plants to run on wind power.

The Wind Turbines:

Depending on the amount of water required, the system uses from 1, 2, or 3 wind turbines to produce electricity. Each turbine produces 750 kilowatts of power at rated wind speed.

Our wind turbines are produced by Aeronautica Windpower, LLC, of Plymouth, Massachusetts. These turbines are the perfect size for producing lots of fresh water. Unlike many larger turbines, the 750kW machine is easy to transport and erect – even on smaller islands with limited ports, roads, and crane accessibility.two turbines in field

When the wind is blowing strongly, proprietary controls automatically create extra fresh water, which is stored in over-sized tanks. When the wind is blowing at lower speeds, electricity is used just to pump water around the system, or for delivery. The system is sized so that the wind can stop completely for up to a day while water is drawn from fresh water tanks before additional electricity is drawn from either the grid or a an on-site generator.

Special logic is used to control and prioritize the use of available wind energy. Storage tanks in the system are specially sized to store extra fresh water when the wind is blowing. This is what makes AED wind driven water desalinization plants so unique.