发明名称 |
Process for Reducing the Sulfate Concentration in a Wastewater Stream by Employing Regenerated Gibbsite |
摘要 |
A method for removing sulfate from a wastewater stream includes mixing gibbsite and a calcium source to precipitate Ettringite from the wastewater stream and produce an effluent with a reduced sulfate concentration. The gibbsite in the precipitated Ettringite is regenerated by mixing an acid with the Ettringite and precipitating gibbsite particles, after which the gibbsite particles are subjected to a crystallization process to increase the size of the gibbsite particles which are recycled back to the main stream. |
申请公布号 |
US2014144843(A1) |
申请公布日期 |
2014.05.29 |
申请号 |
US201314087629 |
申请日期 |
2013.11.22 |
申请人 |
VEOLIA WATER SOLUTIONS & TECHNOLOGIES SUPPORT |
发明人 |
BANERJEE KASHI;BLUMENSCHEIN CHARLES D.;SCHRADER JOHN CHARLES;COOK ROBERT G. |
分类号 |
C02F1/52 |
主分类号 |
C02F1/52 |
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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