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公开(公告)号：EP2259854A2
公开(公告)日：2010-12-15
申请号：EP09728027.5
申请日：2009-04-03
IPC分类号： B01D3/10
CPC分类号： C02F1/469 , B01D61/44 , B01D61/48 , B01D61/485 , B01D2317/02 , C02F1/42 , C02F1/44 , C02F1/4604 , C02F1/4674 , C02F1/4693 , C02F1/4695 , C02F2001/422 , C02F2001/425 , C02F2103/08 , C02F2209/006 , C02F2301/08 , C02F2303/16 , Y02A20/131 , Y02A20/134
摘要： A low energy system and process for seawater desalination wherein the system has at least an electrodialysis apparatus that produces partially desalinated water and a brine by-product, an ion exchange softener, and at least one electrodeionization apparatus. The softener treats the partially desalinated water stream to remove or reduce the amount of scaling material in order to maintain deionization apparatus efficiency and reduce energy consumption. The softener has the capability of removing a higher ratio of calcium ions to magnesium ions than is in the partially desalinated stream, thereby reducing softener size and energy use. The deionization apparatus produces product water of the desired properties. The brine stream may be used to regenerate the softener.
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公开(公告)号：EP2038225A2
公开(公告)日：2009-03-25
申请号：EP07809832.4
申请日：2007-06-22
发明人： GIFFORD, Joseph, D. , ARBA, John, W. , FREYDINA, Evgeniya , JHA, Anil, D. , LIANG, Li-Shiang , WANG, Lu
CPC分类号： B01D61/48 , B01D2311/04 , C02F1/4695 , C02F5/00 , C02F2001/422 , C02F2001/425 , C02F2001/427 , B01D2311/106
摘要： Electrodeionisation devices having low scale potential as well water treatment methods using the device are disclosed. The device may have a variety of configurations such as a first depleting compartment disposed between the anode compartment and the cathode compartment, a concentrating compartment in ionic coummunication with the depleting compartment, a second depleting compartment in ionic communication with the concentrating compartment and a first barrier cell in ionic communication with and disposed between the first depleting compartment and at lest one of the anode compartment and the cathode compartment. The device may also have configuration directed to the layering of the anionic exchange resin beads and/or have at l-east one compartment that provides a dominating resistance resulting in a uniform current distribution throughout the apparatus. Temperature control may be provided. It is also possible to arrange for parallel liquid flow.
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公开(公告)号：EP2027072A1
公开(公告)日：2009-02-25
申请号：EP07777206.9
申请日：2007-05-22
CPC分类号： C02F1/469 , A01G25/00 , B01D61/44 , C02F1/02 , C02F1/42 , C02F1/4693 , C02F2103/08 , C02F2209/005 , C02F2209/05 , Y02A20/134 , Y02A40/241
摘要： An electrically-driven separation apparatus can be used with a pressure-driven separation apparatus to provide potable water having a desired total dissolved solids (TDS).
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公开(公告)号：EP2035334A1
公开(公告)日：2009-03-18
申请号：EP07777210.1
申请日：2007-05-22
发明人： FREYDINA, Evgeniya , GANZI, Gary C. , JHA, Anil D. , LIANG, Li-Shiang , WILKINS, Frederick C. , ZUBACK, Joseph E.
CPC分类号： C02F1/469 , A01G25/00 , B01D61/44 , C02F1/02 , C02F1/42 , C02F1/4693 , C02F2103/08 , C02F2209/005 , C02F2209/05 , Y02A20/134 , Y02A40/241
摘要： An electrically-driven separation apparatus can be used with a pressure-driven separation apparatus to provide potable water having a desired total dissolved solids (TDS).
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