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HYBRID ELECTROCHEMICAL AND MEMBRANE-BASED PROCESSES FOR TREATING WATER WITH HIGH SILICA CONCENTRATIONS
HYBRID ELECTROCHEMICAL AND MEMBRANE-BASED PROCESSES FOR TREATING WATER WITH HIGH SILICA CONCENTRATIONS
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机译:用高二氧化硅浓度处理水的杂化电化学和基于膜的方法
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摘要
Provided are hybrid electrochemical and membrane-based systems for removing silica from water stream to achieve ultra-pure water. The silica concentration of a feed water stream may dictate the most effective and economical variation of disclosed hybrid processes to use. For example, for a feed water stream having a silica concentration of 1-30 ppm, a hybrid system for treating the feed water includes an electrodialysis reversal unit, the electrodialysis reversal unit comprising an inlet stream and a product outlet stream; a reverse osmosis unit, the reverse osmosis unit comprising an inlet stream and a product outlet stream, wherein the inlet stream of the reverse osmosis unit comprises the product outlet stream of the electrodialysis reversal unit; and an electrodeionization unit, the electrodeionization unit comprising an inlet stream and a product outlet stream, wherein the inlet stream of the electrodeionization unit comprises the product outlet stream of the reverse osmosis unit.
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