RECOVERY METHOD OF NITROGEN RESOURCE AND CALCIUM FLUORIDE FROM WASTE SOLUTION CONTAINING FLUORINE AND AMMONIA

Title:

RECOVERY METHOD OF NITROGEN RESOURCE AND CALCIUM FLUORIDE FROM WASTE SOLUTION CONTAINING FLUORINE AND AMMONIA

Document Type and Number:

Japanese Patent JP2023110804

Kind Code:

A

Abstract:

To provide a recovery method of nitrogen resource and calcium fluoride from a waste solution containing fluorine and ammonia.SOLUTION: A waste solution containing fluorine and ammonia is reacted with a slurry where calcium carbonate is dispersed in water, then added with an acid to recover a supernatant liquid as a nitrogen resource; a waste solution containing fluorine and ammonia is added to its residual liquid then solid-liquid separated to recover calcium fluoride.SELECTED DRAWING: Figure 1

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Inventors:

YUKAWA SHOTARO
SAKIYAMA KENJI
SEKO RYO
OKADA NOBUYUKI
INAYOSHI MASAKI

Application Number:

JP2022022481A

Publication Date:

August 09, 2023

Filing Date:

January 28, 2022

Export Citation:

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Assignee:

KOTOKU CLEANER CO LTD

International Classes:

C02F1/58; C01F11/22; C02F1/56

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