HYBRID ELECTROCHEMICAL AND MEMBRANE-BASED PROCESSES FOR TREATING WATER WITH HIGH SILICA CONCENTRATIONS

    公开(公告)号:US20230295019A1

    公开(公告)日:2023-09-21

    申请号:US18123536

    申请日:2023-03-20

    CPC classification number: C02F1/4695 C02F1/441 C02F1/463 B01D61/04 C02F2103/08

    Abstract: 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.

Patent Agency Ranking