Ballast water and fish farm treatment system

Patent metadata

Field	Value
Publication number	US-10093567-B2
Application number	US-201615381888-A
Country	US
Kind code	B2
Filing date	Dec 16, 2016
Priority date	Aug 22, 2016
Publication date	Oct 9, 2018
Grant date	Oct 9, 2018

Abstract

The ballast water and fish farm treatment system for circulating effluent water of a fish farm or a ship by filtering and resupplying the effluent water, the system including a heat exchange system to heat or cool the effluent water, a physical filtration unit to filter out impurities from the effluent water are discharged from the heat exchange system, and a chemical filtration unit to mix the effluent water discharged from the physical filtration unit with chlorine dioxide, wherein the effluent water discharged from the chemical filtration unit is resupplied to the fish farm or the ship. The ballast water and fish farm treatment system allows circulation water of the ship and fish farm to be reused after completely removing parasites, hazardous organisms, germs, and viruses from the circulation water using a combination of physical, chemical and physiological treatment techniques.

First claim

What is claimed is:

1. A ballast water and fish farm water treatment system for circulating effluent water from a source by filtering and resupplying the effluent water, the system comprising:
a heat exchange system;
a physical filtration unit connected to the heat exchange system via a first pipe and in fluid communication with the heat exchange system;
a chemical filtration unit connected to the physical filtration unit via a second pipe and in fluid communication with the physical filtration unit; and
a fine oxygen supplier in fluid communication with the heat exchange system and the physical filtration unit, wherein the fine oxygen supplier is connected to the first pipe to introduce oxygen bubbles into the effluent water when the effluent water moves from the heat exchange system to the physical filtration unit through the first pipe,
wherein:
the physical filtration unit comprising a plurality of phosphorus members and a plurality of diatomaceous fine cross-sectional membranes, said phosphorous members stacked in multiple layers with a diatomaceous fine cross-sectional membrane attached to one surface of each of said phosphorous members, the physical filtration unit configured to filter out, destroy, and extinguish parasites, germs and viruses in the effluent water and to dissolve the oxygen bubbles into the effluent water while the effluent water passes through fine gaps of the plurality of diatomaceous fine cross-sectional membranes; and
the water treatment system is configured to resupply the effluent water, discharged from the chemical filtration unit, to the source, wherein the source includes a fish farm or a ship.

2. The ballast water and fish farm water treatment system according to claim 1 , wherein the heat exchange system comprises:
a high-temperature heat exchange unit configured to cause the effluent water to perform heat exchange with a heat exchanger of a boiler;
a low-temperature heat exchange unit configured to cause the effluent water to perform heat exchange with a heat exchanger of a cooler;
a storage unit configured to store the effluent water having performed heat exchange with the high-temperature heat exchange unit and the low-temperature heat exchange unit; and
a circulation pipe configured to cause the effluent water stored in the storage unit to perform heat exchange with the high-temperature heat exchange unit and the low-temperature heat exchange unit.

3. The ballast water and fish farm water treatment system according to claim 1 , wherein the chemical filtration unit comprises:
a chlorine dioxide generator connected to the second pipe and configured to introduce the chlorine dioxide into the effluent water when the effluent water is discharged from the physical filtration unit into the second pipe; and
a mixing means configured to mix the effluent water with the chlorine dioxide.

4. The ballast water and fish farm water treatment system according to claim 3 , wherein the mixing means comprises:
a cylindrical housing configured to move the effluent water in an axial direction of the cylindrical housing;
a rotational shaft disposed axially within the cylindrical housing and in parallel with a direction of a movement of the effluent water in the cylindrical housing; and
a first screw connected to the rotational shaft and configured to rotate about the rotational shaft.

5. The ballast water and fish farm water treatment system according to claim 4 , wherein an inner circumferential surface of the cylindrical housing further comprises a comb-pattern protrusion,
wherein the cylindrical housing is configured to mix the effluent water with the chlorine dioxide by a friction that is generated by applying a centrifugal force of the first screw against the comb-pattern protrusion when the screw rotates.

6. The ballast water and fish farm water treatment system according to claim 4 , wherein the first screw further comprises a plurality of holes extending therethrough and is configured to mix the effluent water with the chlorine dioxide while the effluent water and the chlorine dioxide pass through the holes.

7. The ballast water and fish farm water treatment system according to claim 4 , further comprising a second screw, wherein:
the first screw and the second screw are configured to be spaced from each other in a longitudinal direction of the rotational shaft, and
each of the first screw and the second screw comprises a plurality of insertion holes dimensioned to connect the first screw and the second screw to each other by a plurality of wires inserted through the insertion holes.

8. The ballast water and fish farm water treatment system according to claim 7 , wherein each of the plurality of wires comprises:
an axial portion dimensioned to be inserted into a corresponding insertion hole and to make a seesaw movement; and
a deformation portion configured to connect one axial portion to another axial portion and to be elastically deflected by a centrifugal force of a rotating screw, from the first or second screws, and a flow energy of the effluent water,
wherein the axial portions and the deformation portions are configured to mix the effluent water with the chlorine dioxide by the seesaw movement of the axial portions and the elastic deflection of the deformation portions.

9. The ballast water and fish farm water treatment system according to claim 1 , wherein each of the plurality of phosphorous members is disposed in parallel to and at a distance from another phosphorous member and is disposed diagonally to the first and second pipes within the physical filtration unit.

10. The ballast water and fish farm water treatment system according to claim 1 , wherein each of the plurality of diatomaceous fine cross-sectional membranes is disposed in parallel to and at a distance from another diatomaceous fine cross-sectional membrane and is disposed perpendicularly to the first and second pipes within the physical filtration unit.

11. The ballast water and fish farm water treatment system according to claim 1 , wherein the phosphorous members are interposed with the diatomaceous fine cross-sectional membranes.

Assignees

• Korea Inst Ocean Sci & Tech
• Korea Institute Of Science & Tech

Inventors

• Park Yong Joo
• Hwang Sun Wan
• Myoung Jung Goo
• Lim Jang Geun

Classifications

• B01F7/00633

  Operations & Transport · mapped topic

• B01F2015/062

  Operations & Transport · mapped topic

• C02F2103/008

  Originating from marine vessels, ships and boats, e.g. bilge water or ballast water · CPC title

• B01F3/04531

  Operations & Transport · mapped topic

• C02F1/004

  using large scale industrial sized filters · CPC title