Ballast water treatment device

Patent metadata

Field	Value
Publication number	US-2017349450-A1
Application number	US-201615385275-A
Country	US
Kind code	A1
Filing date	Dec 20, 2016
Priority date	Jun 7, 2016
Publication date	Dec 7, 2017
Grant date	—

Abstract

A ballast water treatment device capable of suppressing damage to a filter is provided. The ballast water treatment device is provided with: a filtering device including a filter for filtering ballast water; a plurality of lines for a flow of the ballast water; a ballast pump for pumping the ballast water to flow into the plurality of lines; and a control unit for controlling the ballast pump to cause the ballast water to flow into a desired line. The plurality of lines includes an object line connected to the filtering device, and a discharge line diverging from the object line and connected to an outside of a system. The control unit controls the ballast pump to discharge the ballast water remaining in the object line to the outside of the system via the discharge line, by causing a ballast water flow through the object line and the discharge line.

First claim

1 . A ballast water treatment device comprising:
a filtering device including a filter for filtering ballast water; a plurality of lines having valves for flowing the ballast water to and from the filtering device; and a control unit for controlling a ballast pump and the valves so as to cause the ballast water to flow through the plurality of the lines, wherein the plurality of lines includes any combination of at least one of the lines including at least one object line connected to the filtering device, and the control unit is configured to control the ballast pump and the valves so as to cause the ballast water that has remained in the object line to be discharged to an outside of a system.

2 . The ballast water treatment device according to claim 1 , wherein
the plurality of lines includes a bypass line into which the ballast water flows from outside the system and from which the ballast water is discharged to the outside of the system, and the object line includes a first line with one end connected to the bypass line and another end connected to a primary side of the filter.

3 . The ballast water treatment device according to claim 1 , wherein
the filtering device further includes a rinsing water jet nozzle for jetting rinsing water for rinsing the filter, and the object line includes a third line with one end connected to a secondary side of the filter and another end connected to the rinsing water jet nozzle.

4 . The ballast water treatment device according to claim 1 , wherein the control unit performs control of the ballast pump immediately before or after starting operation of a ballast water treatment.

5 . The ballast water treatment device according to claim 2 , wherein
the filtering device further includes a rinsing water jet nozzle for jetting rinsing water for rinsing the filter, and the object line includes a third line with one end connected to a secondary side of the filter and another end connected to the rinsing water jet nozzle.

6 . The ballast water treatment device according to claim 2 , wherein the control unit performs control of the ballast pump immediately before or after starting operation of a ballast water treatment.

7 . The ballast water treatment device according to claim 3 , wherein the control unit performs control of the ballast pump immediately before or after starting operation of a ballast water treatment.

8 . The ballast water treatment device according to claim 5 , wherein the control unit performs control of the ballast pump immediately before or after starting operation of a ballast water treatment.

9 . The ballast water treatment device according to claim 2 , further comprising at least one discharge line diverging from the object line and connected to the outside of the system.

10 . The ballast water treatment device according to claim 3 , further comprising at least one discharge line diverging from the object line and connected to the outside of the system.

11 . A ballast water treatment device configured to be connected with a plurality of lines having valves for flowing ballast water to and from the ballast water treatment device, the plurality of lines including any combination of at least one of the lines including at least one object line connected to the ballast water treatment device and at least one discharge line diverging from the object line and connected to an outside of a system, comprising:
a filtering device including a filter for filtering the ballast water; a ballast pump for pumping the ballast water to flow to the plurality of lines; and a control unit for controlling the ballast pump and the valves so as to cause the ballast water to flow through the plurality of the lines, wherein the control unit is configured to control the ballast pump and the valves so as to cause the ballast water that has remained in the object line to be discharged to the outside of the system via the discharge line by causing the ballast water to flow through the object line and the discharge line.

12 . The ballast water treatment device according to claim 11 , wherein
the plurality of lines includes a bypass line into which the ballast water flows from outside the system and from which the ballast water is discharged to the outside of the system, the object line includes a first line with one end connected to the bypass line and another end connected to a primary side of the filter, and the discharge line includes a second line configured to discharge the ballast water that has remained in the first line to the outside of the system.

13 . The ballast water treatment device according to claim 11 , wherein
the filtering device further includes a rinsing water jet nozzle for jetting rinsing water for rinsing the filter, the object line includes a third line with one end connected to a secondary side of the filter and another end connected to the rinsing water jet nozzle, and the discharge line includes a fourth line configured to discharge the ballast water that has remained in the third line to the outside of the system.

14 . The ballast water treatment device according to claim 11 , wherein the control unit performs control of the ballast pump immediately before or after starting operation of a ballast water treatment.

15 . The ballast water treatment device according to claim 12 , wherein
the filtering device further includes a rinsing water jet nozzle for jetting rinsing water for rinsing the filter, the object line includes a third line with one end connected to a secondary side of the filter and another end connected to the rinsing water jet nozzle, and the discharge line includes a fourth line configured to discharge the ballast water that has remained in the third line to the outside of the system.

16 . The ballast water treatment device according to claim 12 , wherein the control unit performs control of the ballast pump immediately before or after starting operation of a ballast water treatment.

17 . The ballast water treatment device according to claim 13 , wherein the control unit performs control of the ballast pump immediately before or after starting operation of a ballast water treatment.

18 . The ballast water treatment device according to claim 15 , wherein the control unit performs control of the ballast pump immediately before or after starting operation of a ballast water treatment.

Assignees

• Miura Kogyo Kk

Inventors

• Tange Tomoaki
• Zenman Yasutomo

Classifications

• C02F2301/043

  Treatment of partial or bypass streams · CPC title

• C02F1/008 Primary

  Control or steering systems not provided for elsewhere in subclass C02F · CPC title

• C02F1/004 Primary

  using large scale industrial sized filters · CPC title

• C02F2303/04

  Disinfection · CPC title

• C02F2209/005

  Processes using a programmable logic controller [PLC] · CPC title