Title:
FISH HATCHERY TANK SYSTEM HAVING FUNCTION TO ADJUST DISSOLVED OXYGEN BY HIGHLY EFFICIENT OXYGEN SUPPLY
Document Type and Number:
WIPO Patent Application WO/2017/126088
Kind Code:
A1
Abstract:
[Problem] To provide a low-cost water tank system for maintaining a sufficiently high level of dissolved oxygen in a fish hatchery tank. [Solution] In the present invention, a lid 14 is disposed over an upper opening of a water tank 12 to form a space 22 isolated from the air on the surface of water. A micro-nano bubble generator 16 supplies micro-nano bubbles containing gaseous oxygen into the water. When oxygen is dissolved in a supersaturated state in the water, oxygen released from the water surface is retained in the space 22,increasing the partial pressure of oxygen in the gas in the space 22. This increases the saturated dissolved oxygen concentration in the water which is in contact with the space 22 having an increased oxygen partial pressure.
Inventors:
KUGINO KENJI (JP)
Application Number:
PCT/JP2016/051738
Publication Date:
July 27, 2017
Filing Date:
January 21, 2016
Export Citation:
Assignee:
KUGINO KENJI (JP)
International Classes:
A01K63/04
Foreign References:
| JPH04248940A | 1992-09-04 | |||
| JP2012115250A | 2012-06-21 | |||
| JP2003088736A | 2003-03-25 | |||
| JPH04152830A | 1992-05-26 |
Attorney, Agent or Firm:
FUCHIGAMI koji (JP)
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