公开(公告)号：US20180170775A1

公开(公告)日：2018-06-21

申请号：US15578563

申请日：2016-06-14

申请人： Saltworks Technologies Inc.

发明人： Xiangchun YIN ,  Benjamin SPARROW

IPC分类号： C02F1/469 ,  C02F1/76 ,  C02F1/66 ,  C02F1/467 ,  B01D61/50

CPC分类号： C02F1/4693 ,  B01D61/44 ,  B01D61/46 ,  B01D61/50 ,  B01D2311/12 ,  B01D2311/2634 ,  B01D2311/2684 ,  C02F1/04 ,  C02F1/441 ,  C02F1/442 ,  C02F1/445 ,  C02F1/447 ,  C02F1/461 ,  C02F1/4674 ,  C02F1/66 ,  C02F1/76 ,  C02F2001/5218 ,  C02F2101/16 ,  C02F2103/10 ,  C02F2103/26 ,  C02F2201/46115 ,  C02F2201/4613 ,  C02F2201/46145 ,  C02F2201/4617 ,  C02F2201/4618 ,  C02F2209/003 ,  C02F2209/006 ,  C02F2209/05 ,  C02F2209/06 ,  C02F2209/14 ,  C02F2209/29 ,  C02F2209/40

摘要： Methods, systems, and techniques for removing ammonium from ammonia-containing water involve using a stack that has alternating product chambers and concentrate chambers for receiving ammonia-containing water and an acidic solution, respectively, with the chambers being bounded by alternating cation exchange membranes and proton permselective cation exchange membranes. Ammonium moves from the product chambers to the concentrate chambers across the CEMs and protons move from the concentrate chambers to the product chambers across the pCEMs when the stack is in use. An electrolyzer may also be used to convert the ammonium in the concentrate chambers into nitrogen.