Topic
The removal of dissolved salts from seawater or brackish water to produce fresh water, mainly by reverse osmosis, thermal distillation or solar evaporation.
Researchers modelling costs found photovoltaic-powered reverse osmosis is the cheapest solar option for brine from a Texas desalination plant. Whether that beats deep-well injection depends on disposal costs at each site.
Reality
Tangshan Sanyou Group's Hebei desalination plant has entered trial production, claiming 60% lower power use and brine turned into soda ash feedstock. The 60% is the company's own figure with no clear baseline, so operators should treat it as a design claim to test.
Reality
Chinese Academy of Sciences researchers report a 250 kW seawater hydrogen plant with 14.4% better electricity use than alkaline electrolysis. Stack heat distills the plant's own feed water and leaves a brine that could yield uranium, though no recovery rate has been reported.
Reality
A modelling study in Progress in Energy takes electricity, hydrogen and desalinated water off one 200 MW-thermal module, and its hydrogen cost drops about 17 per cent once the freshwater is sold externally. Nothing has been built.
Reality
The emirate's energy chairman says population growth, industry and AI infrastructure are pulling on the same grid, and the spending works out near 30 billion dirhams a year while desalination moves onto electricity.
Reality
Chunlei Guo's group at Rochester reports a solar evaporator that moves salt off the hot absorbing zone and dries it at the panel edges. The test fluid was real seawater, magnesium and calcium included.
Reality