Apparatus and methods for treating ballast water by using electrolysis of natural seawater
First Claim
1. An apparatus for treating ballast water in a ship, the apparatus comprising:
- a ballast tank installed in a lower portion of the ship, for storing seawater;
an electrolyzer connected with the ballast tank, for electrolyzing the seawater;
a first circulation pump installed between the ballast tank and the electrolyzer, for allowing the ballast water to flow into the electrolyzer;
a second circulation pump for discharging the electrolyzed seawater containing NaOCl from the electrolyzer to the ballast tank; and
a controller for supplying power to the electrolyzer so as to control an NaOCl density of the ballast water and controlling the circulation pumps.
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Abstract
An electrolysis-type apparatus for treating ballast water using NaOCl and a method thereof is provided. The apparatus includes: a ballast tank; an electrolyzer; a first circulation pump; a second circulation pump; and a controller. The ballast tank is installed in a ship to store seawater. The electrolyzer is connected with the ballast tank and electrolyzes the seawater. The circulation pumps are installed to allow the ballast water to flow into the electrolyzer and to discharge the electrolyzed water containing NaOCl to the ballast tank. The controller supplies power to the electrolyzer so as to control an NaOCl density and controls the circulation pumps. The apparatus and the method safely treat the seawater. Thus, environment pollution and ecosystem destruction can be minimized.
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Citations
21 Claims
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1. An apparatus for treating ballast water in a ship, the apparatus comprising:
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a ballast tank installed in a lower portion of the ship, for storing seawater;
an electrolyzer connected with the ballast tank, for electrolyzing the seawater;
a first circulation pump installed between the ballast tank and the electrolyzer, for allowing the ballast water to flow into the electrolyzer;
a second circulation pump for discharging the electrolyzed seawater containing NaOCl from the electrolyzer to the ballast tank; and
a controller for supplying power to the electrolyzer so as to control an NaOCl density of the ballast water and controlling the circulation pumps. - View Dependent Claims (2, 3, 4, 5, 21)
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6. A method for treating ballast water in a ship using electrolysis, the method comprising steps of:
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taking in seawater into a ballast tank;
operating a circulation pump to allow the seawater of the ballast tank to flow into an electrolyzer where electrodes for electrolysis are installed;
converting, at the electrolyzer, NaCl contained in the seawater into NaOCl through electrolysis; and
discharging the seawater containing NaOCl to the ballast tank through a circulation pump. - View Dependent Claims (7, 8, 9, 10)
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11. An apparatus for treating ballast water in a ship, the apparatus comprising:
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a ballast tank installed in a lower portion of the ship, for storing seawater;
an intake pump for taking in seawater and supplying the seawater to the ballast tank;
an electrolyzer position between the ballast tank and the intake pump, for electrolyzing the seawater supplied to the ballast tank from the intake pump; and
a controller for controlling power supplied to the electrolyzer and controlling the intake pump to adjust an NaOCl density of the seawater contained in the ballast tank. - View Dependent Claims (12, 13, 14, 15, 16)
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17. A method for treating ballast water in a ship using electrolysis, the method comprising steps of:
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taking in seawater into a ballast tank;
passing the taken-in seawater through an electrolyzer where electrodes for electrolysis are installed to generate electrolyzed water containing NaOCl; and
allowing the electrolyzed water containing NaOCl to flow into the ballast tank. - View Dependent Claims (18, 19, 20)
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Specification