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Method and device for treating fluorine-containing water


Title: Method and device for treating fluorine-containing water.
Abstract: A high percentage of fluorine in fluorine-containing water is removed and high purity calcium fluoride is recovered when treating the fluorine-containing water by passing the same through calcium carbonate packed towers provided in series in a plurality of stages, preferably two stages. In a method including passing fluorine-containing water through calcium carbonate packed towers provided in series in a plurality of stages to remove the fluorine in the fluorine-containing water and recover calcium fluoride, the calcium carbonate towers are packed with calcium carbonate with a volume mean diameter of 30 to 150 μm. By the use of calcium carbonate granules with a volume mean diameter of 30 to 150 μm, an increase in the purity of the recovered calcium fluoride and an increase in the fluorine removal ratio can be realized with a relatively small device. ... Browse recent Kurita Water Industries Ltd. patents
USPTO Applicaton #: #20120279928
Inventors: Shuhei Izawa



The Patent Description & Claims data below is from USPTO Patent Application 20120279928, Method and device for treating fluorine-containing water.




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stats Patent Info
Application #
US 20120279928 A1
Publish Date
11/08/2012
Document #
13503244
File Date
10/19/2010
USPTO Class
210752
Other USPTO Classes
210201
International Class
/
Drawings
5


Your Message Here(14K)


Calcium Fluoride


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Kurita Water Industries Ltd.

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Liquid Purification Or Separation   Processes   Chemical Treatment   Plural Spaced Feedings  

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