US 10,370,263 B2Granted

Ballast water treatment device

AssigneeMiura Co., Ltd.

InventorsTomoaki Tange, Akinori Kawakami

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Abstract

A ballast water treatment device attached to a vessel provided with: a line (1) through which drawn treatment target water flows; and a ballast tank (5) connected to a downstream side of the line (1). The ballast water treatment device is provided with: a filter (3) which is disposed in the line (1) and which filters the treatment target water; and a controller (7). The controller (7) causes the treatment target water to be discharged outboard from an upstream side of the filter (3) in an early stage of drawing of the treatment target water, until water quality is stabilized, and, when the water quality of treatment target water has stabilized, causes the filter (3) to filter the treatment target water. Thus, ballast water filtering can be efficiently performed.

Claims14

Dependent claims

A ballast water treatment device configured to provide attached to a vessel with treated water, the vessel including a ballast water treatment line through which drawn treatment target water flows, a ballast tank and an outboard discharge line which are connected to a downstream side of the ballast water treatment line,

the ballast water treatment device comprising:
a filter disposed in the ballast water treatment line to filter the treatment target water;
a bypass line configured to bypass the filter;
a controller;
a water quality measurement device connected to the ballast water treatment line;
a treated water valve connected to the ballast water treatment line;
and
a bypass valve connected to the bypass line, wherein
the controller causes the treated water valve to close and the bypass valve to open, such that the treatment target water is discharged outboard via the outboard discharge line from an upstream side of the filter, from a start of drawing of the treatment target water until a signal from the water quality measurement device reaches a predetermined value, and causes the bypass valve to close and the treated water valve to open.

6 more elements

A ballast water treatment device configured to provide a vessel with treated water, the vessel including a ballast water treatment line through which drawn treatment target water flows, a ballast tank and an outboard discharge line which are connected to a downstream side of

the ballast water treatment line,
the ballast water treatment device comprising:
a filter disposed in the ballast water treatment line to filter the treatment target water;
a bypass line configured to bypass the filter;
a controller;
a water quality measurement device connected to the ballast water treatment line;
a treated water valve connected to the ballast water treatment line;
and
a bypass valve connected to the bypass line, wherein
the controller causes the treated water valve to close and the bypass valve to open, such that the treatment target water is discharged outboard via the outboard discharge line from an upstream side of the filter, from a start of drawing of the treatment target water until a signal from the water quality measurement device reaches a predetermined value, and causes the bypass valve to remain open and the treated water valve to open.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/450,746Filed 6 Mar 2017 · continuation in part
Priority: 31 Aug 2016
Published: US 2017/0174531 A122 Jun 2017
Granted: 6 Aug 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification14 codes

C02F 1/008
Treatment of water, waste water, or sewage: control or steering systems not provided for elsewhere in subclass C02F
B63J 4/002
Arrangements of installations for treating ballast water, waste water, sewage, sludge, or refuse, or for preventing environmental pollution not…:…
C02F 1/004
Processes for the treatment of water whereby the filtration technique is of importance: using large scale industrial sized filters
C02F 1/325
With ultraviolet light: irradiation devices or lamp constructions

Family

PCT/JP2013/080158Parent of this continuation · filed 7 Nov 2013
US 9,475,566 B2Parent of this continuation · filed 10 Aug 2015
Application15/253,171Parent of this continuation-in-part · filed 31 Aug 2016
US 2017/0174531 A1Pre-grant publication · published 22 Jun 2017
Application14/388,170Parent of this continuation
Application15/253,171Parent of this continuation
US 10,556,660 B2Related patent
US 2015/0232164 A1Published application
US 2016/0368581 A1Published application
US 10,370,263 B2This patent

From the US filing history. Foreign family members aren’t listed.

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