Title:
水処理システム及び水処理方法
Document Type and Number:
Japanese Patent JP7106465
Kind Code:
B2
Abstract:
To provide a water treatment system that achieves a high operating rate and cost reduction even when operating in a highly alkaline environment to obtain highly concentrated wastewater.SOLUTION: A water treatment system of the present embodiment includes a water softening treatment unit, first to third separation units, and a coagulating and precipitating unit. The water softening treatment unit recovers alkaline earth metal from water to be treated to obtain water to be softened. The first separation unit separates the softened water into first demineralized water and first concentrated water. A second separation unit separates the first concentrated water into second demineralized water and second concentrated water. The coagulating and precipitating unit performs coagulated precipitation treatment to a mixed solution of a regenerated liquid used for regenerating a cation exchange resin and the second concentrated water, and produces a coagulated precipitate containing a silica component. The third separation unit separates the mixed liquid from which the coagulated precipitate has been removed into third demineralized water and third concentrated water.SELECTED DRAWING: Figure 1
Inventors:
Toshihiro Imada
Akiko Suzuki
Kenji Sano
Shinobu Moiwa
Hideaki Takahashi
Masao now
Kensuke Nakamura
Akiko Suzuki
Kenji Sano
Shinobu Moiwa
Hideaki Takahashi
Masao now
Kensuke Nakamura
Application Number:
JP2019017982A
Publication Date:
July 26, 2022
Filing Date:
February 04, 2019
Export Citation:
Assignee:
Toshiba Corporation
Toshiba Infrastructure Systems & Solutions Corporation
Toshiba Infrastructure Systems & Solutions Corporation
International Classes:
C02F1/44; B01D19/00; B01D61/00; B01D61/58; B01F21/00; B01F23/2326; B01F25/30; B01J49/53; C02F1/20; C02F1/42; C02F1/52; C02F9/02; C02F9/04
Domestic Patent References:
| JP2000070933A | ||||
| JP2003300069A | ||||
| JP9155344A | ||||
| JP2001347140A | ||||
| JP2016137447A | ||||
| JP11197649A | ||||
| JP2017064600A | ||||
| JP10244259A | ||||
| JP11221579A | ||||
| JP2006181445A | ||||
| JP2014233699A |
Foreign References:
| WO2008053700A1 | ||||
| WO2015002309A1 | ||||
| US20050150834 |
Attorney, Agent or Firm:
Masatoshi Kurata
Nobuhisa Nogawa
Ryuji Mine
Naoki Kono
Tadashi Inoue
Sanae Kaneko
Nobuhisa Nogawa
Ryuji Mine
Naoki Kono
Tadashi Inoue
Sanae Kaneko
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