发明名称 |
Selenium Removal Using Chemical Oxidation and Biological Reduction |
摘要 |
Selenium in the form of a reduced species such as selenocyanate is oxidized to produce an oxidized selenium species such as selenate or selenite, and then a biological reduction process is used to remove selenium from the oxidized selenium species. In an example, a chemical oxidant is added to a wastewater containing selenocyanate to produce selenate and selenite. The partially treated wastewater is then fed to a reactor containing a fixed media supporting a biofilm with selenium reducing organisms. The selenium in the selenate and selenite is reduced to an insoluble form of selenium, such as elemental selenium, which precipitates from the wastewater. |
申请公布号 |
US2012024798(A1) |
申请公布日期 |
2012.02.02 |
申请号 |
US20100844053 |
申请日期 |
2010.07.27 |
申请人 |
PICKETT TIMOTHY MICHAEL;MA YANGUO;SONSTEGARD JILL |
发明人 |
PICKETT TIMOTHY MICHAEL;MA YANGUO;SONSTEGARD JILL |
分类号 |
C02F9/04;C02F1/58;C02F1/70;C02F1/72;C02F3/00 |
主分类号 |
C02F9/04 |
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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