发明申请
- 专利标题： METHOD FOR A TREATMENT FOR WASTEWATER CONTAINING ALUMINUM, MAGNESIUM, AND MANGANESE
- 专利标题（中）： 用于处理含有铝，镁和锰的废水的方法
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申请号： US13583145申请日： 2011-01-06
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公开(公告)号： US20130001173A1公开(公告)日： 2013-01-03
- 发明人: Hiroshi Kobayashi , Tatsuya Higaki , Hirofumi Shoji , Norihisa Toki , Keiji Kudo , Hiroyuki Mitsui , Osamu Nakai
- 申请人： Hiroshi Kobayashi , Tatsuya Higaki , Hirofumi Shoji , Norihisa Toki , Keiji Kudo , Hiroyuki Mitsui , Osamu Nakai
- 申请人地址： JP Tokyo
- 专利权人： Sumitomo Mental Mining Co., Ltd.
- 当前专利权人： Sumitomo Mental Mining Co., Ltd.
- 当前专利权人地址： JP Tokyo
- 优先权： JP2010-053843 20100310; JP2010-174885 20100803
- 国际申请： PCT/JP2011/050112 WO 20110106
- 主分类号： C02F1/52
- IPC分类号： C02F1/52 ; C02F101/20
摘要：
The wastewater treatment method is to obtain demanganized wastewater, through a step wherein an acid or an alkali is added to sulfuric acid acidified wastewater to adjust pH to not less than 4.0 and not more than 6.0, whereby the sulfuric acid acidified wastewater is separated into a dealuminized solution and an aluminum precipitate; a step wherein a slurrying solution is added to the aluminum precipitate to form a slurry, then an alkali is added to adjust pH to not less than 9.0 and not more than 9.5, whereby an pH-adjusted aluminum precipitate slurry is formed; a step wherein an alkali is added to the dealuminized solution to adjust pH to not less than 8.0 and not more than 9.0; and others.
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