公开(公告)号：EP0777528A1

公开(公告)日：1997-06-11

申请号：EP95927768.0

申请日：1995-08-08

申请人： ELF ATOCHEM S.A.

发明人： BIVER, Claudine ,  CUER, Jean-Pierre ,  DELMAS, François ,  GARCIA, François

IPC分类号： C02F1 ,  B01J20 ,  B01J47 ,  C23C18 ,  C25D21

CPC分类号： B01J47/10 ,  C02F1/285 ,  C23C18/1617 ,  C25D21/22 ,  Y10S210/912

摘要： The process comprises the circulation through a column of the liquid to be purified and a superabsorbent, preferably of the polyacrylic type, the rising speed of the liquid being selected so that, in the column, a superabsorbent simply swollen is in a stationary dynamic condition, while the superabsorbent charged with multivalent ions forms sediments at the base of the column. Application to the treatment of water used for rinsing parts which have been subjected to a nickeling treatment.

公开(公告)号：EP0701481A1

公开(公告)日：1996-03-20

申请号：EP94917064.0

申请日：1994-05-27

申请人： ELF ATOCHEM S.A.

发明人： BIVER, Claudine ,  RAZET, Jean-Claude

IPC分类号： B01J47 ,  B01J49 ,  C25D21

CPC分类号： C25D21/22 ,  B01J47/012 ,  B01J49/10

摘要： Aqueous effluents having a metallic ion charge, and especially those containing nickel, are stripped by subjecting said metallic ions to a treatment using complexing polymers, their metallic ion content then being sufficiently low for them to be safely discharged into the environment. The complexing polymers are regenerated by said treatment and can be reused after being optionally neutralized. The regenerating solutions are recyclable in treatment baths.

摘要翻译： 具有金属离子电荷的水性流出物，特别是含有镍离子的水，通过使金属离子进行使用络合聚合物的处理而被剥离，然后它们的金属离子含量足够低以使其安全地排放到环境中。 络合的聚合物通过所述处理再生，并且可以在任选中和后重复使用。 再生溶液可在处理浴中回收。