FILTER DEVICE, BALLAST WATER TREATMENT APPARATUS USING THE SAME AND TREATMENT METHOD OF BALLAST WATER

Japanese Patent JP2015123424

A

PROBLEM TO BE SOLVED: To provide a filter device which has a cleaning effect capable of being stably used for a long period while preventing breakage due to usage thereof, and to provide a ballast water treatment apparatus using the filter device.SOLUTION: A filter device is manufactured by using a pleat filter in which filter base material having folds so as to repeat mountain parts and valley parts are formed into such a cylindrical shape that the ridge line direction of the folds are set as the axial direction, as a filter membrane. Therein, the pleat filter can be rotated around a cylinder shaft of the cylindrical shape as the center, a nozzle which is disposed opposite to the outer circumferential surface of the pleat filter and ejects liquid toward the outer circumferential surface is provided and, when the pleat interval on the outer circumference side folds is p, the length of the ridge line direction effective for filtration is h, the opening width vertical to the ridge line direction on the opening part of the nozzle is W and the length of an opening in the ridge line direction is L, the following relations are satisfied: 4p≤W, and h/5≤L≤h/2.

JP2000300915	PRECOAT TYPE FILTERING DEHYDRATOR
JP2001162115	VACUUM FILTER USING METALLIC FILTER MEDIUM

KANAZAWA SHINICHI
OSAWA ISAO

JP2013270607A

July 06, 2015

December 27, 2013

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SUMITOMO ELECTRIC INDUSTRIES

B01D33/06; B63B13/00; C02F1/32; C02F1/461

JP2013048998A	2013-03-14
JP2011194396A	2011-10-06
JP2012187578A	2012-10-04
JP2008279429A	2008-11-20
JPH08117528A	1996-05-14
JPS59145010A	1984-08-20
JP2015033667A	2015-02-19

US20100288686A1

2010-11-18

Hideaki Nishima
Takeshi Morita
Kosoegawa Misako
Toya Masahiro
Seiji Ogino

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