公开(公告)号：US4655928A

公开(公告)日：1987-04-07

申请号：US543191

申请日：1983-10-18

申请人： Everett C. Milton ,  Harry P. Gregor

发明人： Everett C. Milton ,  Harry P. Gregor

IPC分类号： C02F1/44 ,  B01D61/44 ,  C02F1/469 ,  C02F1/62 ,  C02F9/00 ,  C22B7/00 ,  C22B13/00 ,  C22B15/00 ,  C22B17/00 ,  C22B23/00 ,  C22B26/10 ,  C23F1/46 ,  H01M10/54 ,  B01D13/00

CPC分类号： H01M10/54 ,  B01D61/58 ,  C02F9/00 ,  C22B13/04 ,  C22B15/0086 ,  C22B17/04 ,  C22B23/0453 ,  C22B26/10 ,  C22B7/006 ,  B01D2311/2642 ,  B01D61/025 ,  B01D61/445 ,  C02F2101/20 ,  Y02P10/234 ,  Y02P10/236 ,  Y02W30/84

摘要： A process for the treatment of an aqueous stream containing an acid or base and typically a precipitatable material such as a metal ion comprises:(a) subjecting the aqueous stream to (i) a treatment to produce a relatively pure stream of water and a concentrated aqueous stream, and (ii) water splitting to produce a stream of base, a stream of acid and a dilute aqueous stream of a concentration lower than the concentrated aqueous stream, the treatments (i) and (ii) being effected in either order,(b) recycling at least part of the pure water stream produced in (a)(i) to an earlier stream either in the production leading to said aqueous stream or to step (i) or (ii),(c) recycling at least part of the acid and/or base streams produced in (a)(ii) to an earlier stream either in the production leading to said aqueous stream or to an earlier step in the process, and(d) recycling at least part of the lower concentration stream produced in (a)(ii) to either (a)(i) or to another step in the process, whereby, when present, only the precipitatable material is removed from the aqueous stream, thereby obviating toxic waste disposal problems.

摘要翻译： 用于处理含有酸或碱和典型的可沉淀物质如金属离子的含水流的方法包括：（a）使水流经受（i）处理以产生相对纯的水流和浓缩的 水流，和（ii）水分解以产生碱流，酸流和浓度低于浓缩水流的稀水流，处理（i）和（ii）以任何顺序进行， （b）将（a）（i）中生产的纯水流中的至少一部分再循环到生产过程中的较早的流中，或者在步骤（i）或（ii）中，（c）至少再循环 （a）（ii）中生产的一部分酸和/或碱性物流在生产过程中，或者在生产过程中的较早阶段，或（d）回收至少一部分较低的 （a）（ii）中产生的（a）（i）或（p）中的另一步骤产生的浓缩物流 由此，当存在时，只有可沉淀物质从水流中除去，从而避免有毒废物处理问题。

公开(公告)号：US4775480A

公开(公告)日：1988-10-04

申请号：US8176

申请日：1987-01-29

申请人： Everett C. Milton ,  Harry P. Gregor

发明人： Everett C. Milton ,  Harry P. Gregor

IPC分类号： B01D61/44 ,  C02F9/00 ,  C22B7/00 ,  C22B15/00 ,  C22B26/10 ,  H01M10/54 ,  B01D13/00

CPC分类号： H01M10/54 ,  B01D61/58 ,  C02F1/4693 ,  C02F9/00 ,  C22B13/04 ,  C22B15/0086 ,  C22B17/04 ,  C22B23/0453 ,  C22B26/10 ,  C22B7/006 ,  B01D2311/2642 ,  B01D61/025 ,  B01D61/145 ,  B01D61/147 ,  B01D61/445 ,  C02F2001/46128 ,  C02F2101/20 ,  Y02P10/234 ,  Y02P10/236 ,  Y02W30/84

摘要： A process for the treatment of an aqueous stream containing an acid or base and typically a precipitatable material such as a metal ion comprises:(a) subjecting the aqueous stream to (i) a treatment to produce a relatively pure stream of water and a concentrated aqueous stream, and (ii) water splitting to produce a stream of base, a stream of acid and a dilute aqueous stream of a concentration lower than the concentrated aqueous stream, the treatments (i) and (ii) being effected in either order,(b) recycling at least part of the pure water stream produced in (a) (i) to an earlier stream either in the production leading to said aqueous stream or to step (i) or (ii),(c) recycling at least part of the acid and/or base streams produced in (a) (ii) to an earlier stream either in the production leading to said aqueous stream or to an earlier step in the process, and(d) recycling at least part of the lower concentration stream produced in (a) (ii) to either (a) (i) or to another step in the process, whereby, when present, only the precipitatable material is removed from the aqueous stream, thereby obviating toxic waste disposal problems.

摘要翻译： 用于处理含有酸或碱和典型的可沉淀物质如金属离子的含水流的方法包括：（a）使水流经受（i）处理以产生相对纯的水流和浓缩的 水流，和（ii）水分解以产生碱流，酸流和浓度低于浓缩水流的稀水流，处理（i）和（ii）以任何顺序进行， （b）将（a）（i）中生产的纯水流中的至少一部分再循环到生产过程中的较早的流中，或者在步骤（i）或（ii）中，（c）至少再循环 （a）（ii）中生产的一部分酸和/或碱性物流在生产过程中，或者在生产过程中的较早阶段，或（d）回收至少一部分较低的 （a）（ii）中产生的（a）（i）或（t）中的另一步骤产生的浓缩物流 因此，当存在时，只有可沉淀物质从水流中除去，从而避免有毒废物处理问题。