Title:
WASTEWATER TREATMENT METHOD AND WASTEWATER TREATMENT SYSTEM
Document Type and Number:
WIPO Patent Application WO/2017/154780
Kind Code:
A1
Abstract:
To provide a wastewater treatment method and a wastewater treatment system for efficiently treating scrubber wastewater and ballast wastewater at the same time without providing a plurality of treatment facilities. Provided are: a wastewater treatment method including a mixing step for mixing ballast wastewater into scrubber wastewater that is obtained by bringing an exhaust gas and a scrubber washing liquid into contact with each other in a scrubber 10 such that the suspended solids concentration or the turbidity of the resulting mixture is fixed, a treatment step for adding a magnetic powder to the mixed wastewater, and a separation step for magnetically separating magnetic floc obtained in the treatment step; and a wastewater treatment system provided with a mixing device 3 for mixing ballast wastewater into scrubber wastewater that is obtained by bringing an exhaust gas and a scrubber washing liquid into contact with each other in a scrubber such that the suspended solids concentration of the resulting mixture is fixed, a magnetic powder addition device 4 for adding a magnetic powder to the mixed wastewater obtained using the mixing device, and a magnetic separation device 5 for magnetically separating magnetic floc obtained using the magnetic powder addition device.
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Inventors:
HANAI YOSUKE (JP)
NAKADA EIJU (JP)
SAKAI YASUZO (JP)
NAKADA EIJU (JP)
SAKAI YASUZO (JP)
Application Number:
PCT/JP2017/008530
Publication Date:
September 14, 2017
Filing Date:
March 03, 2017
Export Citation:
Assignee:
FUJI ELECTRIC CO LTD (JP)
UNIV UTSUNOMIYA (JP)
UNIV UTSUNOMIYA (JP)
International Classes:
C02F1/52; B01D21/01; B03C1/00; B03C1/14; B03C1/247; C02F1/32; C02F1/50; C02F1/76; C02F1/78
Domestic Patent References:
| WO2009060813A1 | 2009-05-14 | |||
| WO2014118819A1 | 2014-08-07 | |||
| WO2009019971A1 | 2009-02-12 |
Foreign References:
| JP2010269248A | 2010-12-02 | |||
| JP2003104292A | 2003-04-09 | |||
| JP2012152708A | 2012-08-16 | |||
| US20140060323A1 | 2014-03-06 |
Other References:
See also references of EP 3421430A4
Attorney, Agent or Firm:
OKUYAMA, Shoichi et al. (JP)
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