| 摘要 |
<p>The invention relates to a system enabling the use of solar heat energy together with electromagnetic energy, in particular microwaves, and optionally energy produced during the fermentation of organic products (biomass, wastewater) in order to produce fresh water from salt water, wastewater and water vapour contained in the atmosphere. The resulting fresh water can optionally be rendered drinkable by adding mineral salts at the desired concentration, said salts optionally originating from salt crystallisation during purification. The invention relates to a method and reactors combining electromagnetic and solar heating steps and optionally heat exchanges with a hot gas originating from a combustion, in order to evaporate droplets of a spray produced from salt water or wastewater. The vapour obtained is separated from the salt particles or agglomerated impurities during evaporation using a cyclone system. The vapour can then be transported over a large distance before being condensed by bearings, in order to separate the water from any additives or impurities that my be present. Additives, such as ethanol, can be used to lower the vapour pressure of the liquid water and to facilitate droplet fractionation. Said additives are recycled during the condensation phases. In the case of salt water or wastewater treatment, the method further includes prefiltration steps using the pressure energy of the gases produced during the fermentation steps. The gases produced during fermentation are burned in turbines or internal combustion engines in order to produce hot gases that are used for the evaporation of the water aerosol droplets and for the production of part of the current required for the operation of the system. Finally, the purified liquid water production process includes condensation of the water vapour contained in the combustion gases.</p> |
