发明名称 |
METHOD AND APPARATUS FOR TREATING BOROFLUORIDE-CONTAINING WATER |
摘要 |
Borofluoride-containing water is treated without carrying out warming so as to highly remove boron as well as fluorine therefrom. A method for treating borofluoride-containing water, which comprises: a first step of adding an aluminum compound to the borofluoride-containing water to decompose a borofluoride at pH 1 to 4; a second step of adding a calcium compound to treated water obtained in the first step to react the treated water with the calcium compound at pH 7 to 13, thereby producing an insoluble substance; and a third step of separating the insoluble substance into a solid material and a liquid material. The aluminum compound is added in such a manner that the Al/F ratio becomes 1.2 to 2.5 (by mole). The calcium compound is added in such a manner that the Ca/Al ratio becomes 2.5 to 4.0 (by mole). Each of the treatment temperature employed in the first step and the treatment temperature employed in the second step is 10 to 35˚C. |
申请公布号 |
SG11201506360Q(A) |
申请公布日期 |
2015.09.29 |
申请号 |
SG11201506360Q |
申请日期 |
2014.02.21 |
申请人 |
KURITA WATER INDUSTRIES LTD. |
发明人 |
IZAWA, SHUHEI;ISHIZUKA, SATORU |
分类号 |
C02F1/58 |
主分类号 |
C02F1/58 |
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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