Wave powered water desalination system
The CalWave Hydronode operates using a single power-take-off (PTO) and surface piercing point absorber to utilize wave energy to desalinate seawater. The system uses a commercial-off-the-shelf reverse osmosis unit and was designed to be small for rapid deployment while also allowing for the potential to scale. The system can provide fresh water for off-grid applications using wave energy for remote and rural communities.
Water Desalination Systems includes competitors Aero-Desalinator, BlueBox RO DS, Desolenator, Eliodomestico Solar Water Distiller, Aqua-life & SlingShot.
Goal 6: Clean water and sanitation
Remote communities and disaster relief organizations.
Description of the treatment system
Manufacturer-specified water treatment rate, measured in liters per hour
Laboratory-evaluated log scale removal rate of bacteria
Laboratory-evaluated log scale removal rate of viruses
Laboratory-evaluated log scale removal rate of protozoa
Reduction levels of heavy metals and/or arsenic through this treatment system
Power and/or solar energy required for water treatment
Is there safe water storage integrated into this product?
The design utilizes an inflatable hull that is mostly filled with seawater (can be adjusted based on anchor size) to increase the surface contact with waves and reduce pretension in the mooring line. The reverse osmosis (RO) system forces water through a membrane producing pure water. The estimated total freshwater delivered (TDS) is 250 mg/L based on the commercial-off-the-shelf RO system when operated consistently at 800 PSI.
Provided by the manufacturer.
Manufacturer specified performance targets include: appropriate for rapid deployment, scalable, and easily operated and maintained.Interview with manufacturer 2021
Calculation by the manufacturer project 280 W of continuous average mechanical power is possible in Jeanette’s Pier wave climate. The manufacturer’s patented, larger PTO technology has gone through bench testing and wave tank testing. Open ocean deployment is scheduled in 2021.Interview with manufacturer 2021
No third-party organizations, only testing performed by the designer
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