Title:
WATER RECOVERY METHOD AND DEVICE
Document Type and Number:
WIPO Patent Application WO/2016/199268
Kind Code:
A1
Abstract:
The purpose of the present invention is to recover water by using a device with a simple configuration to efficiently treat wastewater including scale components, organic matter, inorganic ions, and the like, and particularly wastewater such as human effluent and domestic wastewater produced in a closed space such as a nuclear shelter, a disaster refuge, a space station, a manned spacecraft for a lunar/Mars mission, and a lunar base. A softening device 1 is used to remove hardness components from water to be treated such as human effluent, an electrolysis device 2 is subsequently used to break down and remove organic matter, urea, ammonia, and the like by way of electrolysis, and a first desalinating electrodialysis device 3 is used to desalinate the electrolyzed water to obtain product water and a concentrated salt solution. Furthermore, the concentrated salt solution is treated by a second acid/alkali-producing electrodialysis device 4 to produce desalinated water, an acid solution, and an alkaline solution. The acid solution is used as reclaiming agent for the softening device 1. The alkaline solution is used as an Na forming agent for the softening device 1. The desalinated water is treated by the first desalinating electrodialysis device 3.
Inventors:
MATSUMOTO YUKITAKA (JP)
KOBAYASHI HIDEKI (JP)
ORITA NOBUHIRO (JP)
KOBAYASHI HIDEKI (JP)
ORITA NOBUHIRO (JP)
Application Number:
PCT/JP2015/066855
Publication Date:
December 15, 2016
Filing Date:
June 11, 2015
Export Citation:
Assignee:
KURITA WATER IND LTD (JP)
International Classes:
C02F1/469; B01D61/44; B01D61/58; B01J49/00; C02F1/42; C02F1/461; C02F9/00
Foreign References:
| JP2015080778A | 2015-04-27 | |||
| JP2013075259A | 2013-04-25 | |||
| JPH06262172A | 1994-09-20 |
Attorney, Agent or Firm:
SHIGENO, Tsuyoshi et al. (JP)
Takeshi Shigeno (JP)
Takeshi Shigeno (JP)
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