BALLAST WATER TREATMENT DEVICE

WIPO Patent Application WO/2015/068245

A1

A ballast water treatment device having a cylindrical filter (2) that filters and externally discharges ballast water that has flowed therein, arranged inside a casing (1). The ballast water treatment device enables the filter (2) cleaning to occur efficiently and effectively, has a simplified construction, enables easier production and maintenance, and comprises: a filter rotation means (3) that rotates the filter (2) around the axis center thereof; a suction nozzle (4) provided on the primary side of the filter (2) and opening towards the inner circumferential surface of the filter (2); a cleaning water jet nozzle (6) provided on the secondary side of the filter (2) and jetting cleaning water towards the filter (2); a cleaning waste water discharge means (5) that discharges, from the casing (1) to outside, cleaning waste water suctioned by the suction nozzle (4); a differential pressure detection means (8) that detects the pressure difference between the primary side and the secondary side of the filter (2); and a control means (9) that controls whether or not cleaning water is jetted or controls whether or not cleaning water is jetted and the cleaning water jet pressure during cleaning water jetting, on the basis of the pressure difference.

TANGE TOMOAKI (JP)
KAWAKAMI AKINORI (JP)
SHIRAISHI HITOSHI (JP)
ZENMAN YASUTOMO (JP)
SAITO YASUHIKO (JP)
IDE TAKAMICHI (JP)

PCT/JP2013/080159

May 14, 2015

November 07, 2013

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MIURA KOGYO KK (JP)

B01D33/06; B01D24/46; B01D33/44; B01D33/58; B63B13/00; C02F1/00

JP2004141785A	2004-05-20
JP2013180666A	2013-09-12
JP2011251284A	2011-12-15

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