Title:
BALLAST WATER TREATMENT METHOD
Document Type and Number:
WIPO Patent Application WO/2019/044769
Kind Code:
A1
Abstract:
A ballast water treatment method includes: a step for supplying a bactericidal component to a ballast pipe during uptake of ballast water into a ballast tank through the ballast pipe; a first measurement step for measuring the concentration of the bactericidal component in the ballast water after supplying the bactericidal component; a circulation step for returning the ballast water retained in the ballast tank to the ballast pipe through a circulation pipe; a second measurement step for measuring the concentration of the bactericidal component included in ballast water that has returned to the ballast pipe; and a step for supplying the bactericidal component to the ballast pipe 2 when the concentration of the bactericidal component measured in the second measurement step is less than 0.2 times the concentration of the bactericidal component measured in the first measurement step. In the first supply step, the bactericidal component is supplied to the ballast pipe 2 such that the concentration of the bactericidal component measured in the first measurement step is 6 mg/L or greater.
More Like This:
| WO/1998/038865 | METHOD, COMPOSITION AND SYSTEM FOR THE CONTROLLED RELEASE OF CHLORINE DIOXIDE GAS |
| JP2005224646 | WATER PURIFICATION GATE |
Inventors:
TAJIMA YASUHIRO (JP)
Application Number:
PCT/JP2018/031586
Publication Date:
March 07, 2019
Filing Date:
August 27, 2018
Export Citation:
Assignee:
KURARAY CO (JP)
International Classes:
C02F1/50; B63B13/00; C02F1/72
Domestic Patent References:
| WO2016174890A1 | 2016-11-03 | |||
| WO2017073513A1 | 2017-05-04 | |||
| WO2015075820A1 | 2015-05-28 | |||
| WO2016174890A1 | 2016-11-03 |
Foreign References:
| JP2009112978A | 2009-05-28 | |||
| JP2016198698A | 2016-12-01 | |||
| JP2009112978A | 2009-05-28 | |||
| JP2016064376A | 2016-04-28 | |||
| JP2015016761A | 2015-01-29 |
Other References:
ASANO, MASAMICHI ET AL.: "Complex treatment system by filter filtration treatment and electric field chlorine treatment", JOURNAL OF THE JIME, vol. 41, no. 2, pages 69 - 74
See also references of EP 3666737A4
See also references of EP 3666737A4
Attorney, Agent or Firm:
KOTANI, Etsuji et al. (JP)
Download PDF: