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3D Printing of coastal protection Reefs

The Albanian coastline has been declining in recent years due to coastal erosion and uncontrolled...

SolarDew

Pollution, climate change and population growth are expected to affect 5 billion people by 2050. Today, 850 million people have to worry about how they are going to provide drinking water for their families. Problems with high levels of contamination and/or salinity of drinking water sources are continuously increasing. For many people there are currently no affordable water purification solutions available, this is also the case in the aftermath a natural disaster. Buying water of unknown quality or producing more bottled water, than the 500 billion water bottles the world is already producing each year, cannot be a sustainable solution for their drinking water problems. What is needed are solutions which can provide clean drinking water when the need is high, after a disaster and in the long run to increase their resilience.

Developed by Solar Dew International B.V.

SolarDew has developed a unique alternative to solve this problem with an affordable product that is easy to use, robust, extremely low in maintenance and only requires energy from the sun to produce clean water from saline, biological or chemically contaminated water. SolarDew’s unique technology eliminates the need to transport water over large distances.

TRL5. Laboratory testing of integrated system
Technology validated in relevant environment. Fidelity of breadboard technology increases significantly. The basic technological components are integrated with reasonably realistic supporting elements so they can be tested in a simulated environment. Examples include “high-fidelity” laboratory integration of components. SolarDew has done extensive laboratory testing on the membranes and on A4 sized prototypes under an artificial sun. SolarDew is currently developing a prototype based on the final product design which incorporates the foreseen manufacturing technologies, materials and components for field testing.

See more information about this level and the TRL and SRL levels.

Investment ready

The business plan for this innovation has been evaluated by The Funding Company and it is considered to be ready for investment.

The main components of the system have been tested separately, and an initial integration exercise has been conducted.

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Collaborators

How does it work?

In essence, the technology allows water to be heated by the sun and evaporated down through a proprietary membrane to produce clean water, whilst leaving bacteria, viruses, chemicals and salt behind. Through this process of solar membrane distillation one can reduce salinity by more than 10,000x in a single step. In order to increase efficiency SolarDew has created a multi-layer system whereby energy from the 1st layer is regenerated to power the 2nd layer and so on. This dramatically increases the performance per square meter. The proprietary membrane is highly resistant to fouling ensuring constant performance and low maintenance.

Limitations/conditions under which this innovation does not work or is less effective

The technology is solar powered as a result functions best in regions with a high solar radiation. The lower limit is a radiation of 1500 kWh/m²/year. In regions, with a seasonal variation, the use of buffer tanks are recommended. The technology focusses on point of use desalination for small scale applications from 4 to approximately 5000 l/day. This is not a solution for large urban communities, industrial or agricultural applications but rather focusses on a segment for which there are no reliable solutions for: the provision of drinking water to individuals and small communities.

Added value

  •  High quality drinking water from biologically, chemically contaminated or saline sources
  • Affordable : reduces the price paid for clean drinking water by 50% or more.
  • Simple plug and play system
  • Reliable – eliminates dependency on other people. Daily production of clean drinking water in your own house or community., every day.
  • Robust –does not make use of mechanical or electrical components which can be failure prone.
  • Autonomous – no need to buy diesel or be connected to the grid, because it is solar powered.
  • Low maintenance and easy to service

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