Title:
BALLAST WATER TREATMENT DEVICE AND BALLAST WATER TREATMENT METHOD
Document Type and Number:
WIPO Patent Application WO/2017/033487
Kind Code:
A1
Abstract:
A ballast water treatment device is provided with a control unit that can switch a discharge mode for ballast water (W3) between a hydraulic head pressure discharge mode wherein the ballast water (W3) is discharged by hydraulic pressure via an ultraviolet irradiation unit (3) and a line (L12) and a pressure feed discharge mode wherein the ballast water (W3) is discharged by a pressure feed unit (P1) via the ultraviolet irradiation unit (3) and the line (L12), and that implements a discharge process in the pressure feed discharge mode after implementing a discharge process in the hydraulic head pressure discharge mode. The control unit (9) controls a flow rate adjustment unit such that the flow rate of water passing through the line (L12) approaches a capacity securing flow rate for the ultraviolet irradiation unit (3) in the hydraulic head pressure discharge mode from a low flow rate state wherein the flow rate of water passing through the line (L12) is smaller than the capacity securing flow rate.
Inventors:
TANGE TOMOAKI (JP)
KAWAKAMI AKINORI (JP)
HIRAKI YOSHINOBU (JP)
KAWAKAMI AKINORI (JP)
HIRAKI YOSHINOBU (JP)
Application Number:
PCT/JP2016/059806
Publication Date:
March 02, 2017
Filing Date:
March 28, 2016
Export Citation:
Assignee:
MIURA KOGYO KK (JP)
International Classes:
C02F1/32; B63B13/00
Foreign References:
| JP2013043143A | 2013-03-04 | |||
| JP2010514551A | 2010-05-06 | |||
| JPH0619891U | 1994-03-15 | |||
| US20100314330A1 | 2010-12-16 | |||
| US20020113022A1 | 2002-08-22 |
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