发明名称 |
HEAVY-METAL REMOVAL METHOD |
摘要 |
Provided are a heavy-metal removal method and a heavy-metal removal device, which are capable of reducing the amount of a neutralizing agent to be used. In a neutralization tank provided with a vertical-type cylindrical reaction vessel 110, stirring blades 120 arranged in the reaction vessel 110, and an annular aeration tube 130 having a large number of air outlets 131 and being arranged to a bottom part of the reaction vessel 110, aeration is performed by introducing gas for oxidation from a large number of air outlets 131 of the aeration tube 130 while stirring an aqueous solution containing at least one kind of ion of a divalent ferrous ion and a divalent manganese ion as a heavy metal element by rotation of the stirring blades 120, and the aqueous solution is subjected to a neutralization treatment. |
申请公布号 |
EP2933234(A1) |
申请公布日期 |
2015.10.21 |
申请号 |
EP20130862448 |
申请日期 |
2013.11.22 |
申请人 |
SUMITOMO METAL MINING CO., LTD. |
发明人 |
NAKAI, TAKAYUKI;MATSUBARA, SATOSHI;NAKAI, OSAMU;KYODA, YOJI |
分类号 |
C02F1/64;C02F1/74;C22B23/00 |
主分类号 |
C02F1/64 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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