método de purificação de um líquido aquoso, método de dessalinização de água do mar, método de purificação de um líquido aquoso e sistema de purificação de água com descarga líquida zero

摘要

Methods and systems are provided for the efficient purification of aqueous liquids comprising an ionic solute. The liquids are purified by a plurality supercapacitor desalination units working in tandem; a first unit operating in charge mode, deionizing the feed solution and producing a purified product liquid, while a second supercapacitor desalination unit is operated in discharge mode, releasing ions into a circulating stream and producing a concentrate. The output of the first desalination unit is removed as a purified product stream. The output of the second desalination unit is a concentrate, which is directed to a common precipitation unit where a portion of the ionic solute is precipitated and separated from the remaining liquid phase, which may be recirculated to the second desalination unit. The use of two supercapacitor desalination units operating out of phase allows the common precipitation unit to be operated continuously under steady state conditions.