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  • Fresh water is a scarce commodity.

  • Of all the water available on Earth, only a small part is fresh water.

  • Most of it is inaccessible, captured in icecaps and glaciers or stored underground.

  • Easily accessible surface water reaches only 0.3% of the limited fresh water available.

  • Whether a region experiences fresh water scarcity is dependent on its location.

  • Warm regions with limited fresh water resources are most likely to experience scarcity.

  • Desalination of seawater or brackish groundwater is a common solution for these regions.

  • Each day 80 million cubic meters of water is desalinated globally.

  • This is equivalent to 0.7% of the global water supply.

  • However, desalination also accounts for 0.5% of the global electricity consumption,

  • indicating the energy intensity of the process.

  • The dominant and most energy efficient desalination technology is reverse osmosis,

  • which produces 60% of all desalinated water.

  • Fossil fuel scarcity

  • and rising energy prices, increase water costs.

  • Climate change effects, population growth,

  • rising living standards and salinization of aquifers lead to extra demand for desalination.

  • With unlimited salt water availability,

  • increasing renewable energy opportunities,

  • and growing environmental awareness,

  • the next logical step is coupling of renewable energy and desalination.

  • However, there is one main barrier.

  • Reverse osmosis is designed for continuous operation, while renewables fluctuate over time.

  • We at Elemental Water Makers have developed a solution which enables a constant reverse osmosis process,

  • while using only fluctuating renewable energy.

  • By operating continuously & energy efficient without the use of batteries

  • and with limited maintenance, we can assure a low water price.

  • The system uses mature technology and is scalable for different capacities.

  • It offers an eco-friendly solution by avoiding the use of fossil fuels and is suitable for stand-alone operation.

  • Elemental Water Makers provides customized renewable energy driven desalination systems for fresh water production.

  • Now let us explain the system.

  • The system uses wind or solar energy connected directly to a pump,

  • which displaces salt water when there is renewable energy available.

  • The saline source water is displaced towards an elevated water buffer,

  • which will provide the pressure required for the reverse osmosis process.

  • However, this would require a significant elevation difference in the surroundings.

  • A salinity increase in the source water requires more elevation.

  • To overcome this limitation we greatly reduce the amount of elevation difference required,

  • by re-using the energy of the brine flow, using an Energy Recovery Device.

  • By correctly sizing all components, fresh water is produced at a constant rate, 24 hours a day,

  • using the constant pressure provided by the elevated water buffer.

  • Because of the salt water buffer, the system runs continuously without any auxiliary power,

  • storing the fresh water in a water tank.

  • Pre-filtration and post treatment are also part of the system and depend on the source water quality.

  • Once the water and location parameters are known,

  • Elemental Water Makers provides an efficient and eco-friendly customized solution.

  • Elemental Water Makers is a spinoff company of the University of Technology Delft in The Netherlands

  • and has won several awards with their renewable driven desalination technology.

  • The technology has been successfully tested in the field during a pilot in Indonesia

  • and is ready for commercial implementation.

  • If you're looking for an affordable and sustainable fresh water supply, contact us

  • and join us in solving fresh water scarcity, using only the sea, sun, earth and wind.

Fresh water is a scarce commodity.

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B2 US water desalination fresh water renewable energy renewable energy

Elemental Water Makers, desalination driven by renewable energy

  • 106 8
    Alvin He posted on 2019/09/29
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