公开(公告)号：EP1721869A1

公开(公告)日：2006-11-15

申请号：EP05719965.5

申请日：2005-02-25

申请人： TOKUYAMA CORPORATION

发明人： KOGA, Yoshiaki, Tokuyama Corporation ,  MUNEMASA, Kazuhiko, Tokuyama Corporation

IPC分类号： C02F1/52 ,  C02F1/56 ,  B01D21/01 ,  D21F1/66 ,  D21H17/68 ,  D21H21/10

CPC分类号： B01D21/01 ,  C02F1/5236 ,  C02F1/5245 ,  C02F1/56 ,  C02F1/66 ,  C02F9/00 ,  C02F2103/28 ,  D21F1/82 ,  D21H19/68 ,  D21H21/10

摘要： There is provided a method for treating papermaking waste water, which comprises having a silica-aluminum based inorganic polymer flocculant having an Si/Al molar ratio of 0.2 to 1.5 contained in papermaking waste water having a pH or adjusted pH of 5 to 14 such that the concentration of the inorganic polymer flocculant becomes 1 to 250 (mg-Al/L) in terms of aluminum to control the pH of the papermaking waste water to 5 to 8 and then adding an organic polymer flocculant.
The method for treating papermaking waste water has high suspended material flocculation efficiency and can flocculate suspended materials without leaving fine suspended materials and produce a flocculated precipitate which can be recycled as a valuable resource.

摘要翻译： 提供了一种用于治疗造纸废水，其包含具有二氧化硅 - 铝系无机聚合物具有0.2的Si / Al摩尔比至1.5包含在造纸废水的pH或5至14搜索的调pH絮凝剂的方法做 无机高分子絮凝剂的浓度变的铝计为1〜250（镁 - 铝/ L），以控制造纸废水的pH值至5到8，然后添加有机高分子凝聚剂。 用于治疗造纸废水的方法，具有高的悬浮物质的絮凝效率和可絮凝悬浮物质不留下细悬浮物，并产生可再循环作为一种有价值的资源絮凝沉淀物。

公开(公告)号：EP1721869B1

公开(公告)日：2011-06-15

申请号：EP05719965.5

申请日：2005-02-25

申请人： Tokuyama Corporation

发明人： KOGA, Yoshiaki, Tokuyama Corporation ,  MUNEMASA, Kazuhiko, Tokuyama Corporation

IPC分类号： C02F1/52 ,  C02F1/56 ,  B01D21/01 ,  D21F1/66 ,  D21H17/68 ,  D21H21/10

CPC分类号： B01D21/01 ,  C02F1/5236 ,  C02F1/5245 ,  C02F1/56 ,  C02F1/66 ,  C02F9/00 ,  C02F2103/28 ,  D21F1/82 ,  D21H19/68 ,  D21H21/10

摘要： There is provided a method for treating papermaking waste water, which comprises having a silica-aluminum based inorganic polymer flocculant having an Si/Al molar ratio of 0.2 to 1.5 contained in papermaking waste water having a pH or adjusted pH of 5 to 14 such that the concentration of the inorganic polymer flocculant becomes 1 to 250 (mg-Al/L) in terms of aluminum to control the pH of the papermaking waste water to 5 to 8 and then adding an organic polymer flocculant. The method for treating papermaking waste water has high suspended material flocculation efficiency and can flocculate suspended materials without leaving fine suspended materials and produce a flocculated precipitate which can be recycled as a valuable resource.