Title:
閉鎖型陸上養殖装置及びそれを用いた陸上養殖方法
Document Type and Number:
Japanese Patent JP7410490
Kind Code:
B2
Abstract:
To provide a closed type land-based aquaculture apparatus that can stimulate aquaculture products without problems, while preventing excessive generation of fine air bubbles with cavitation processing of aquaculture water and a land-based aquaculture method using the same.SOLUTION: An oxygen concentration in aquaculture water decreased due to consumption by aquaculture products is covered by an oxygen dissolution mechanism, and the oxygen concentration of the aquaculture water is maintained in 2.5 ppm or more and 7 ppm or less being less than a saturation value. The aquaculture water is guided to a cavitation nozzle by a pump for cavitation processing through piping 181 for cavitation processing, and is circulated at a specified flow rate where a cross-sectional average flow rate in the cavitation processing unit becomes 8 m/sec or more, and thereby the cavitation processing is performed. The oxygen concentration of the aquaculture water is maintained to less than a saturation value daringly, and thereby the excessive generation of fine air bubbles with the cavitation is prevented, and also the air bubbles adhere to gills of the aquaculture products and such failures as obstruction of taking the dissolved oxygen can be prevented effectively.SELECTED DRAWING: Figure 1A
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Inventors:
Hiroo Takei
Hiroo Kato
Hiroo Kato
Application Number:
JP2019136466A
Publication Date:
January 10, 2024
Filing Date:
July 24, 2019
Export Citation:
Assignee:
Lisni Co., Ltd.
Aqua Future Institute Co., Ltd.
Aqua Future Institute Co., Ltd.
International Classes:
A01K63/04; B01D35/027; B01F21/00; B01F23/2326; B01F23/237; B01F25/31; B01F25/4314; B01F25/452; C02F1/00
Domestic Patent References:
| JP200392954A | ||||
| JP2008173525A | ||||
| JP2013158250A | ||||
| JP8238041A | ||||
| JP7236389A |
Foreign References:
| WO2016195116A2 | ||||
| US20180050312 |
Attorney, Agent or Firm:
Hideki Ueno
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