Title:
METHOD AND DEVICE FOR TREATING FLUORINE-CONTAINING WATER
Document Type and Number:
WIPO Patent Application WO/2023/026554
Kind Code:
A1
Abstract:
Provided are a method and a device for treating fluorine-containing water, the method and device making it possible to suppress blockages in a RO device even if the number of processes is reduced. According to the present invention, fluorine-containing water is treated by using a device for treating fluorine-containing water, the device having: a pH adjustment tank 11 for adding a hydrogen peroxide decomposition agent and a pH adjustment agent to the fluorine-containing water; a filter 14 for filtering the water flowing out from the pH adjustment tank 11; an activated carbon tower 15 into which the filtered water from the filter 14 flows; an MF device 17 into which the water flowing out from the activated carbon tower 15 flows; a reverse-osmosis membrane device 19 into which the water that has passed through the MF device flows; and a reaction tank 22, a flocculation tank 23, and a sludge tank 24 for adding a calcium compound to the water concentrated in the reverse-osmosis membrane device 19 to carry out a fluorine removal treatment.
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Inventors:
NAGATA KOICHI (JP)
Application Number:
PCT/JP2022/013093
Publication Date:
March 02, 2023
Filing Date:
March 22, 2022
Export Citation:
Assignee:
KURITA WATER IND LTD (JP)
International Classes:
B01D61/58; C02F1/28; C02F1/44; C02F1/58; C02F1/70
Foreign References:
| JP2020157273A | 2020-10-01 | |||
| JPH11165179A | 1999-06-22 | |||
| JP2003103260A | 2003-04-08 | |||
| JP2010221115A | 2010-10-07 | |||
| JP2005230731A | 2005-09-02 |
Attorney, Agent or Firm:
SHIGENO, Tsuyoshi et al. (JP)
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