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1.发明授权
公开(公告)号：US5705046A
公开(公告)日：1998-01-06
申请号：US484820
申请日：1995-06-07
IPC分类号： B01D53/73 , B01D61/44 , B01D61/52 , C02F1/04 , C02F1/469 , C02F1/52 , C02F9/00 , C02F11/00 , B01D53/50
CPC分类号： C02F9/00 , B01D53/73 , B01D61/44 , B01D61/52 , C02F1/04 , C02F1/469 , C02F1/52 , C02F11/00 , C02F2103/18
摘要： A process for treating effluent from a flue-gas desulfurization system wherein the resulting gypsum is removed, comprises filtering the gypsum and fly ash free effluent by a filter, transferring the filtrate to an electrodialyzer wherein cation-exchange membranes and univalent anion-exchange membranes are alternately set up, concentrating chlorine ions in the solution therein by dialysis, further concentrating the solution by evaporation in an evaporator, kneading the concentrated solution with cement or a mixture of cement and coal ash to a solid matter with no harm, and thereafter abandoning for landfill; and an apparatus for treating effluent from a flue-gas desulfurization system, comprising a filter for filtering the effluent to a turbidity low enough for treatment by an electrodialyzer wherein the effluent is to be separated into concentrated and dilute solutions, the electrodialyzer equipped with an alternate arrangement of cation- and anion-exchange membranes, with concentration and dilution compartments alternately provided between the both ion-exchange membranes, means for conducting the concentrated solution to a step for final disposal, and means for recycling the dilute solution as makeup water to the desulfurization system.
摘要翻译： 一种用于处理来自烟道气脱硫系统的废水的方法，其中除去所得的石膏，包括通过过滤器过滤石膏和无飞灰的流出物，将滤液转移到电渗析器，其中阳离子交换膜和一价阴离子交换膜是 通过透析交替设置浓缩其中溶液中的氯离子，通过蒸发将溶液浓缩在蒸发器中，将浓缩溶液与水泥或水泥和煤灰的混合物捏合成固体物质而没有损害，然后放弃 垃圾填埋场 以及用于处理来自烟道气脱硫系统的流出物的装置，其包括用于将流出物过滤到足够低的浊度的过滤器，其用于通过电渗析器进行处理，其中所述流出物被分离成浓缩和稀释溶液，所述电渗析器装备有交替 阳离子交换膜和阴离子交换膜的布置，在两个离子交换膜之间交替设置浓度和稀释室，用于将浓缩溶液导入最终处理步骤的装置，以及用于将稀释溶液作为补充水循环的方法 脱硫系统
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