Patent ID: 7491298

Claim:
A plant for producing low-deuterium water from seawater comprising: A) a solar still comprising: 1) a black pan for absorbing radiation from the sun and transferring resulting solar heat energy to seawater to evaporate the seawater to produce water vapor, 2) a condensate tank, 3) a porous membrane, defining an upper side and a lower side, and positioned above said black pan for condensing said water vapor into a condensate, a) comprising diffusing pores permitting said condensate to diffuse from said lower side to said upper side, and b) being positioned in a slope to permit said condensate on said upper side to drain into said condensate tank, and B) a water treatment unit for reducing deuterium concentration in said condensate comprising: 1) a water filter to produce filtered condensate, 2) an electrolizer for separating a portion of said filtered condensate into hydrogen and oxygen, 3) a reactor for combining at least a portion of said hydrogen and oxygen to produce heat and water having deuterium concentrations at least 50 percent lower than deuterium concentration in natural seawater, and 4) a heat transfer system to transfer heat energy produced in said reactor to said reactor to provide heat energy to supplement said solar heat energy.