Tag: Desalination
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Combining Forward Osmosis with Reverse Osmosis
A combination of forward osmosis with reverse osmosis could facilitate the treatment of some high fouling wastewaters. The system uses brine to draw water from the wastewater without high pressure or turbulence. Key element is the membrane’s ability to allow rapid passage of water without much internal concentration polarization. The diluted draw solution can then…
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MEDVSA: a methodology for design of brine discharges into seawater
Desalination is increasing fast in Spain, especially on the Mediterranean coast. The brine generated in the process is discharged into the sea, producing a negative impact on the endemic and stenohaline marine ecosystems, for instance, the Posidonia oceanica and Cymodocea nodosa meadows. MEDVSA is an R&D project, subsidized by the Spanish Ministry of the Environment…
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San Francisco study proves impaired source still feasible
The Marin Municipal Water District (MMWD), near San Francisco, USA, has been exploring seawater desalination to provide a drought-proof supplement to its over-extended water supply. Desalination of San Francisco Bay water presents challenges for pretreatment due to the frequent changes in water quality from the ebb and flow of the tides and winds, seasonal changes…
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Depth Exposed Membrane for Water Extraction (DEMWAX™)
DXV Water Technologies has designed a novel membrane system that uses natural pressure, a very low recovery rate and gravity flow of feedwater past the membrane surface, resulting in an elegant, efficient system. Since the invention of the reverse-osmosis (RO) membrane researchers have tried to harness natural water-pressure, but past attempts mimic onshore processes with…
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Boron nitride nanotube membranes outstrip carbon copies
One approach to improve the desalination process would be to design a more efficient membrane. Embedding nanotubes in the membrane is one area of research. Investigation of water transport through nanotubes in the past has primarily focused on carbon nanotubes, where the water has been found to flow extraordinarily fast in addition to rejecting salt…
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Solar powered desalination plant to open in Dubai this month: reports
A 50-cubic-meter-per-day desalination plant powered by solar energy is set to be launched in Dubai later this month, according to Utilities- me.com.
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Red Sea-Dead Sea secures EIB backing
The landmark Red Sea-Dead Sea Water Conveyance Project has come a step closer to reality with Jordan signing a technical cooperation agreement with the European Investment Bank (EIB) and the Agence Française de Développement.
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Welcome to Water Planet
It’s 9am in California and Eric Hoek is speaking from his car. Fresh from dropping his two pre-schoolers off for the day, the former UCLA engineering professor turned CEO is ready to concentrate on his other ‘babies’ – the two divisions of Water Planet, the water tech company he started with private investment following his…
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Accelerate H20 launches demonstration hub in El Paso
Accelerate H20 has launched a demonstration hub for technologies to reuse and reclaim water in El Paso, Texas.
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Desalination capacity expanded in Barbados
The capacity of an existing desalination plant in Barbados will be expanded by three million gallons, according to local media outlet Nation News.